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The Mining and Exploration News in Mexico: Highlights on the Third Week of May, 2023.
Quartz blade texture in a low-sulphidation epithermal vein
By Miguel A Heredia
During the 20th week of the year (May 17th to May 21st, 2023), at least 16 press releases were announced by companies working in Mexico, with four reporting resources and developments of their properties, four communicating production and financial results, three disclosing deals and corporate issues, two announcing financing issues, two informing on exploration results, and one commenting on Mexican issues. ON MEXICO ISSUES, Alamos Gold and Guanajuato Silver reported the best drilling intercepts in Mexico on the third week of May, 2023. ON EXPLORATION, In Sonora, Colibri reported a strong soil gas hydrocarbon gold anomaly at its Evelyn-Plomo project. In Oaxaca, Vortex initiated environmental and surface geological studies at its Zaachila project. ON MINING, Americas Gold and Silver reported Q1, 2023 production and financial results. Sierra Metals announced Q1, 2023 production and financial results from their Bolivar and Cusi mines in Chihuahua. Starcore reported Q4, 2023 production results from its San Martin mine in Queretaro. Excellon announced Q1, 2023 financial results. ON FINANCING, Fabled announced that it intends to complete a non-brokered private placement for gross proceeds of up to CAD $500K (Mecatona project, Chihuahua). Excellon announced a private placement financing for up to CAD $10M of subscription receipts (La Negra mine, Queretaro). ON RESOURCES AND DEVELOPMENT, Guanajuato Silver released drill results from their San Ignacio mine in Guanajuato and Topia mine in Durango. Alamos Gold reported results from its ongoing drilling program at Puerto del Aire deposit and Capulin target within its Mulatos mine in Sonora. GoGold announced results of its initial Preliminary Economic Assessment (PEA) at its Los Ricos North project in Jalisco. Tocvan provided an update and sampling results from a bulk sample completed at its Pilar project in Sonora. ON DEALS AND CORPORATE ISSUES, Vizsla granted stock options to Directors, Officers, Employees, and Consultants (Panuco project, Sinaloa). Fabled provided an update on the agreement with Kootenay to acquire the Mecatona property in Chihuahua. Excellon provided corporate highlights for the three month ended March 31, 2023. ON SOCIAL RESPONSIBILITY, no relevant news.
ON MEXICO ISSUE
- Alamos Gold Inc., and Guanajuato Silver Company Ltd., reported the best drilling intercepts in Mexico on the third week of May, 2023. Details are shown in the table below:
ON EXPLORATION
- Colibri Resource Corporation reported a strong soil gas hydrocarbon gold anomaly (SGH) south of the main Zone at its Evelyn-Plomo project in Sonora. To define this anomaly, a total of 110 soils samples were collected at 25m stations along 100m spaced lines. “Collectively, these interpreted features indicate a robust SGH response with a high degree of confidence that it is indicative of blind mineralization underlying the southern SGH gold anomaly”. Colibri plans to drill test this target with the hopes of expanding the Main Zone, as well as to continue evaluating the SGH method as a tool for future exploration on the Evelyn-Plomo project.
- Vortex Metals Inc., initiated environmental and surface geological studies at its Zaachila project in Oaxaca. It will allow protecting the local environment and deepening the understanding of the project´s potential to advance its pursuit of multiple high-grade copper targets.
ON MINING
- Americas Gold and Silver Corporation reported Q1, 2023 production and financial results from its Cosala operation in Sinaloa. The company produced approximately 265K Oz Ag, 2.7M Lb Pb, and 7.2M Lb Zn. Cash cost and AISC were USD $4.61 per Oz Ag and USD $9.52 per Oz Ag respectively. Production for 2023 is expected to be between 1.2-1.4M Oz Ag,11-13M Lb Pb, and 33-37M Lb Zn, benefiting from more production from the higher-grade silver areas in the Upper Zone of the San Rafael mine.
- Sierra Metals Inc., announced Q1, 2023 production and financial results from their Bolivar and Cusi mines in Chihuahua. At Bolivar mine, the company processed 299K tonnes at a cash and AISC of USD $1.85 and USD $3.1 per CuEq payable pound. It reported cost of sales of USD $14.93M; a total cash cost of USD $13.16M; and a cash cost of USD $43.99 per ton processed. At Cusi mine, the company processed 59.1K tonnes at a cash and AISC of USD $23.02 and USD $29.8 per Oz AgEq payable. It reported cost of sales of USD $5.8M; a total cash cost of USD $5.23M; and a cash cost of USD $88.43 per ton processed.
- Starcore International Mines Ltd., reported Q4, 2023 production results from its San Martin mine in Queretaro. The company milled 56,821 tonnes of 1.46 g/t Au and 11 g/t Ag with metallurgical recoveries of 86.12% and 48.72% respectively to produce 2,409 Oz AuEq.
- Excellon Resources Inc., announced Q1, 2023 financial results. Excellon reported a reversal of the USD $22M litigation liability relating to the previously disclosed judgment against one of the company’s subsidiaries in Mexico; a gain on the deconsolidation of San Pedro of USD $24.25M; other income of USD $1.58M; and a net income of USD $15.9M. The company announced in its 2022 Preliminary Economic Assessment (PEA) a post-tax NPV (using a discount rate of 5%) of USD $132.4M and estimated restart capital of USD $20.9M, based on the PEA.
ON FINANCING
- Fabled Silver Gold Corp., announced that it intends to complete a non-brokered private placement for gross proceeds of up to CAD $500K at a price of CAD $0.05 per unit. Gross proceeds will be used to complete a phase 1 exploration program at the Mecatona project in Chihuahua, and for general working capital purposes.
- Excellon Resources Inc., announced a private placement financing for up to CAD $10M of subscription receipts at an offer price of CADS $0.35 per subscription receipt (La Negra mine, Queretaro).
ON RESOURCES AND DEVELOPMENT
- Guanajuato Silver Company Ltd., released drill results from their San Ignacio mine in Guanajuato and Topia mine in Durango. At San Ignacio mine, drilling highlights reported in true widths include hole UGSI23-008 with 1.95 g/t Au and 501 g/t Ag (657 g/t AgEq) over 1.90m, including 3.42 g/t Au and 744 g/t Ag (1,018 g/t AgEq) over 0.70m, plus 2.01 g/t Au and 2 g/t Ag (163 g/t AgEq) over 0.22m, plus 0.23 g/t Au and 94 g/t Ag (113 g/t AgEq) over 0.35m; hole UGSI23-009 with 1.26 g/t Au and 415 g/t Ag (516 g/t AgEq) over 1.93m, including 4.14 g/t Au and 2,020 g/t Ag (2,351 g/t AgEq) over 0.22m, plus 0.25 g/t Au and 113 g/t Ag (133 g/t AgEq) over 0.77m, including 0.46 g/t Au and 215 g/t Ag (252 g/t AgEq) over 0.40m; and hole UGSI23-010 with 1.78 g/t Au and 557 g/t Ag (699 g/t AgEq) over 0.45m, plus 1.68 g/t Au and 8 g/t Ag (142 g/t AgEq) over 1.68m, including 2.57 g/t Au and 9 g/t Ag (215 g/t AgEq) over 0.64m, plus 1.72 g/t Au and 122 g/t Ag (260 g/t AgEq) over 1.72m, including 2.94 g/t Au and 151 g/t Ag (386 g/t AgEq) over 0.60m, plus 0.32 g/t Au and 334 g/t Ag (359 g/t AgEq) over 4.89m, including 1.25 g/t Au and 1,947 g/t Ag (2,047 g/t AgEq) over 0.37m. At Topia mine, drilling highlights reported in true widths include hole UT23-458 with 4.39 g/t Au, 660 g/t Ag, 3.2% Pb, and 8.5% Zn (1,435 g/t AgEq) over 0.45m, plus 13.89 g/t Au, 152 g/t Ag, 1% Pb, and 5.6% Zn (1,551 g/t AgEq) over 0.10m; hole UT23-459 with 2.02 g/t Au, 938 g/t Ag, 24.6% Pb, and 9.8% Zn (2,150 g/t AgEq) over 0.42m; hole UT23-460 with 8.16 g/t Au, 113 g/t Ag, 2.1% Pb, and 1.9% Zn (923 g/t AgEq) over 0.45m; hole UT23-461 with 3.53 g/t Au, 905 g/t Ag, 1.1% Pb, and 7.8% Zn (1,525 g/t AgEq) over 0.10m; hole UT23-463 with 6.55 g/t Au, 1,424 g/t Ag, 4.8% Pb, and 13.8% Zn (2,674 g/t AgEq) over 0.60m; and hole UT23-465 with 0.0 g/t Au, 731 g/t Ag, 4% Pb, and 0.2% Zn (851 g/t AgEq) over 0.15m.
- Alamos Gold Inc., reported results from its ongoing drilling program at Puerto del Aire deposit and Capulin target within its Mulatos mine in Sonora. At Puerto del Aire deposit, drilling highlights reported in true widths and values > 40 g/t Au capped include hole 23MUL117 with 20.95 g/t Au (11.14 g/t Au cut) over 14.15m; hole 23MUL119 3.52 g/t Au over 17.05m, plus 8.33 g/t Au over 18m; hole 23MUL112 with 14.81 g/t Au (12.34 g/t Au cut) over 9.1m; hole 23MUL108 with 16.19 g/t Au (7.63 g/t Au cut) over 7.75m; hole 23MUL98 with 10.8 g/t Au over 3m, plus 33.14 g/t Au over 3.05m: and hole 23MUL115 with 15.49 g/t Au (13.89 g/t Au cut) over 6m. These results extend high-grade gold mineralization outside of Mineral Reserves and Resources at Puerto Del Aire. At Capulin target, drilling highlights include hole 23REF012 with 2.01 g/t Au over 82.45m, including 4.81 g/t Au over 16.40m, including 5.38 g/t Au over 12.35m. Capulin target is located 2km east of the former San Carlos open pit.
- GoGold Resources Inc., announced results of its initial Preliminary Economic Assessment (PEA) at its Los Ricos North project in Jalisco. Highlights of the PEA include an after-tax NPV (using a discount rate of 5%) of USD $413M, with an after-tax IRR of USD $29%; a 13-year mine life producing a total of 110.3M payable Oz AgEq, consisting of 68M Oz Ag, 221.7K Oz Au, 22.8M Lb Cu, 144.1M Lb Pb, and 242.2M Lb Zn; an initial capital costs of USD $221M, including USD $29M in contingency costs, over an expected 18 month build, additional expansion capital of USD $137M, and sustaining capital costs of USD $6M over the life of mine (LOM); an average LOM operating cash costs of USD $9.50 per Oz AgEq, and all in sustaining costs (AISC) of USD $9.68 per Oz AgEq; an average annual production of 8.8M Oz AgEq in years one through twelve; and approximately 3/4 of LOM production is from four open pits containing oxide mineralization and approximately 1/4 is from a separate open pit which contains only sulphide mineralization.
- Tocvan Ventures Corp., provided an update and sampling results from a bulk sample completed at its Pilar project in Sonora. Tocvan reported bulk sample material averaging grades of 1.9 g/t Au and 13 g/t Ag from 148 samples ranging from 0.8 to 3.4 g/t Au and from 5 to 26 g/t Ag. Additionally, 32 fine fraction samples excluded from heap leach process returned Au values from 1.2 to 2.8 g/t Au, with a weighted mean of 2.02 g/t Au, and Ag values from 9 to 25 g/t Ag, with a weighted mean of 16 g/t Ag. The fine fraction along with additional bulk sample material will be used in testing gravity recovery methods. “The heap leach process is currently underway for the Bulk Sample. Over 800 tonnes of Bulk Sample material have been prepared for heap leach processing, an additional 350 tonnes of crushed material and 250 tonnes of raw-bulk sample are available for gravity recovery and later agitated leach testing”.
ON DEALS AND CORPORATE ISSUES
- Vizsla Silver Corporation granted 3.85M stock options at an exercise price of $1.60 to Directors, Officers, Employees, and Consultants. The options are exercisable for a period of five years and will vest over the next two years (Panuco project, Sinaloa).
- Fabled Silver Gold Corp., provided an update on the agreement with Kootenay to acquire the Mecatona property in Chihuahua. “The company has been in the process of preparing required documentation in respect of the Proposed Transaction including a NI 43-101 Technical Report on the Mecatona Property. The Company is continuing to correspond with the TSX Venture Exchange regarding the Proposed Transaction and will provide further updates in due course”.
- Excellon Resources Inc., provided corporate highlights for the three month ended March 31, 2023. The company announced the acquisition of the post-producing La Negra mine in Queretaro. La Negra is a fully permitted mine with Indicated Mineral Resources of approximately 15.1M Oz AgEq at 191 g/t AgEq and Inferred Mineral Resources of approximately 41.8M Oz AgEq at 202 g/t AgEq.
ON SOCIAL RESPONSIBILITY
- No relevant news.
Content like what you have just read can be seen at https://gambusinoprospector.com/ and at LinkedIn’s Mexico Mineral Exploration Group.
On the picture above, quartz blade texture in a low-sulphidation epithermal vein system in a prospect in Zacatecas, Mexico. Photo by Miguel A Heredia.
The Mining and Exploration News in Mexico: Highlights on the Second Week of May 2023

By Jorge Cirett
During the 19th week of the year (May 8th to May 14th, 2023), 19 companies working in Mexico posted news releases. Three companies informed on exploration on their properties, eight companies informed on Q1 2023 or full-year 2023 production/financial results, one company informed on the termination of an illegal blockade. One company announced the opening of a financing round. Assay results were released on an advanced property in Sinaloa, and a mill started test work in Nayarit. ON MEXICO ISSUES, Fitch Ratings warned on the impact of the new mining law, specially in exploration activities. ON EXPLORATION, in Sinaloa, Vizsla Silver reported drilling results from Panuco; Prismo Metals started drilling at Palos Verdes. In Jalisco, Stroud Resources provided a summary of the 2021-2022 drilling at Santo Domingo Hostotipaquillo. ON MINING, Endeavour Silver, GoGold Resources, Mag Silver, Avino Silver, Torex Gold, Pan American Silver, Golden Minerals, SilverCrest Metals released Q1 2023 production reports. Fortuna Silver informed on the termination of the illegal blockade at its San José mine in Oaxaca. ON FINANCING, Stroud Resources is to raise up to C$1.5 M. ON RESOURCES AND DEVELOPMENT, Oroco Resource released assay results from its Santo Tomás project in Sinaloa. Xali Gold informed its optioned processing plant in Nayarit has begun test work. ON DEALS AND CORPORATE ISSUES, GR Silver updated on work at its Plomosas project in Sinaloa. Silver Valley informed on negotiations with the Mexican Lithium Agency pertaining a possible partnership involving the lithium component of its properties in Mexico. ON SOCIAL RESPONSIBILITY, Zacatecas Silver continues to build its relationship with the Tetlama community in Morelos.
ON MEXICO ISSUES
- Fitch Ratings stressed that the new mining law is to have far-reach implications in the Mexican mining industry, as it is to slow the pace of exploration, shorten the concessions term and generate worries on the operational continuity, and also to revitalize community negotiations. Even as the details are still to be defined, exploration is the activity that will be hit the hardest, with exploration activities now to be conducted by the Servicio Geológico Mexicano (SGM) and later expanded by special collaboration agreements.
ON EXPLORATION
- Stroud Resources Ltd. provided a summary of the 2021-2022 drilling program at its Santo Domingo property in Hostotipaquillo, Jalisco. The program consisted of 9,936 m in 32 holes to explore the extent of known vein-hosted epithermal mineralization and to define additional parallel systems. Highlighted core length intervals comprise 1.55 m @ 624 gpt Ag; 47.70 m @ 0.18 gpt Au, 42 gpt Ag, 0.1% Pb, 0.4% Zn; 48.90 m @ 0.42 gpt Au, 41 gpt Ag; 68.35 m @ 0.18 gpt Au 66 gpt Ag; 34.70 m @ 1.23 gpt Au, 60 gpt Ag; 32.15 m @ 0.55 gpt Au, 106 gpt Ag; 36.80 m @ 0.23 gpt Au, 141 gpt Ag, 0.2% Pb, 2.0% Zn; 24.00 m @ 0.13 gpt Au, 105 gpt Ag; 14.70 m @ 0.78 gpt Au, 165 gpt Ag; 34.70 m @ 1.23 gpt Au, 60 gpt Ag, 0.6% Pb, 1.8% Zn; 35.45 m @ 0.17 gpt Au, 47 gpt Ag. “To date, the Santo Domingo Project has approximately 85 drill holes totalling 18,184 metres”.
- Vizsla Silver Corp. reported results from 16 expansion holes at its Panuco project in Sinaloa. These expansion holes targeted the Copala resource area, with highlighted true width intervals comprising 5.89 m @ 1,403 gpt Ag, 4.24 gpt Au (or 1,591 gpt AgEq); 4.90 m @ 345 gpt Ag, 1.12 gpt Au (or 396 gpt AgEq); 2.14 m @ 1,319 gpt Ag, 22.46 gpt Au (or 2,743 gpt AgEq); 1.45 m @ 789 gpt Ag, 5.13 gpt Au (or 1,080 gpt AgEq). “Ongoing drilling at Copala has now traced mineralization along ~1,250 metres of strike length and ~400 metres down dip…… Vizsla has to date completed 35,000 m of its planned 90,000 m 2023 drill program”.
- Prismo Metals Inc. has started the drilling program at its Palos Verde project in Sinaloa. The at least 2.500 m drilling is to test the 65% of the Palos Verdes structure that has not been drilled, along with some other veins that have been mapped. The company is trying to intercept large ore shoots as in the adjacent Panuco project (See above).
ON MINING
- Endeavour Silver Corp. announced its financial and operating results for Q1 2023. During the period 1.62 M Oz Ag, 9,342 Oz Au (or 2.4 M Oz AgEq) were produced at $11.12 per Oz Ag and an AISC of $20.16 per Oz Ag, net of gold credits. Cash position was $61.6 M at the end of the period, and working capital $92.8 M. The company is going ahead with the development of the Terronera project in Jalisco, with over $58 M invested to date
- GoGold Resources Inc. announced the financial results for Q1 2023. The company produced 173.7 K Oz Ag, 2,016 Oz Au, 143 tonnes Cu, at adjusted cash cost of $14.00 per Oz AgEq and adjusted AISC of $19.76 per Oz AgEq. Revenue was $7.6 M on the sale of 355.7 K Oz AgEq. Cash on hand is US$100.9 M (Parral tailings, Chihuahua).
- Mag Silver Corp. released unaudited financial results for Q1 2023. Concentrate production has commenced at the Juanicipio mine in Zacatecas (Fresnillo 56%, MAG 44%), containing 2 M Oz Ag, 5,291 Oz Au, 1,281 tonnes Pb, 1,656 tonnes Zn. MAG reported net income of $4.7 M, and closed a $42.6 M offering of shares and a $17.1 M private placement during the period.
- Fortuna Silver Mines Inc. reported that the illegal blockade at its San Jose Main in Oaxaca has been lifted. The company and union workers have reached an agreement to resume operations at the mine and processing plant which recommenced on May 10, 2023.
- Avino Silver & Gold Mines Ltd. released its consolidated financial results for the first quarter of 2023. During the period, the company milled 159.8 K tonnes at Avino, in Durango, to produce 234.3 K Oz Ag, 2,286 Oz Au, 1.4 M Lb Cu (678.2 K Oz AgEq), at cash cost of $14.22 per Oz AgEq and an AISC of $20.17 per Oz AgEq. Revenues of $9.8 M were impacted by timing of concentrate shipments, EBITDA was $0.3 M, cash provided by operating activities of $0.4 M. The dry-stack tailings facility is now complete and fully operational. The company is assessing the continuity of mineralization to depth, with mineralization extending at least 800 m downdip … “it appears that the Avino vein is getting richer in copper as we go deeper with a grade of 1.63% copper over 16.66 metres” intercepted at depth.
- Torex Gold Resources Inc. reported financial and operational results for Q1 2023. During the period the company produced 122,918 Oz Au at its El Limón-Guajes property in Guerrero, milling 13,073 tpd and mining form ELG underground. Cash cost was $709 per Oz Au and AISC of $1,079 per Oz Au. Reported income of $68.2 M and adjusted earnings of $50.3 M. The company has reserves of 38.6 M tonnes @ 2.91 gpt Au, 17.1 gpt Ag, 0.58% Cu at the Morelos Complex in Guerrero, 47.8 M tonnes @ 3.33 gpt Au, 22.6 gpt Ag, 0.80% Cu in measured and indicated resources and 15.8 M tonnes @ 2.49 gpt Au, 23 gpt Ag, 0.86% Cu in inferred resources. The quarter closed with net cash of $318.4 M.
- Pan American Silver Corp. reported unaudited results for the Q1 2023, without figures or specific news on its Mexican properties.
- Golden Minerals Co. released financial results for Q1 2023. Revenue was $4.2 M, net operating margin $0.2 M related to the Rodeo mine operations in Durango, where 2,081 Oz Au, 11,535 Oz Ag were produced. Golden is assessing the possibility of restarting the Velardeña property mining operations in Durango. During the period a maiden resource of 937 K tonnes @ 570 gpt Ag was announced on its Yoquivo property, in Chihuahua, and the return of the Santa Maria property, also in Chihuahua, by Fabled Silver. The company had $2.0 M in cash and cash equivalents by the end of the period.
- SilverCrest Metals Inc. announced its financial and operational results for the first quarter 2023. Undeground mining rates at Las Chispas, in Sonora, averaged 707 tonnes per day (tpd), processing 1,160 tpd with an estimated 40% of production feed sources from stockpiles. Grades averaged 4.06 gpt Au, 419 gpt Ag, recovering 97.5% Au, 91.0% Ag, to produce 13,300 Oz Au, 1.29 M Oz Ag (2.45 M Oz AgEq), at cash cost $6.57 per Oz AgEq and AISC of $11.45 per Oz AgEq. The company had revenue of $58.0 M, resulting in mine operating income of $35.6 M with net free cash flow of $19.3 M, ending the quarter with cash of $45.8 M and net cash of $21.0 M.
ON FINANCING
- Stroud Resources Ltd. announced a non-brokered private placement to raise up to C$1.5 M (Santo Domingo Hostotipaquillo, Jalisco).
ON RESOURCES AND DEVELOPMENT
- Oroco Resources Corp. released assay results for the last two drill holes of the 2021-2023 program, which test the North Zone of its Santo Tomás project in Sinaloa. Highlighted core length results comprise 185.4 m @ 0.27% Cu, 0.013 gpt Au, 1.1 gpt Ag; 228.5 m @ 0.43% Cu, 0.035 gpt Au, 2.52 gpt Ag in one hole and 387.4 m @ 0.45% Cu, 0.043 gpt Au, 3.0 gpt Ag; 39.0 m @ 0.26%, 0.012 gpt Au, 1.68 gpt Ag in the other. “The North Zone program comprises 47 diamond drill holes and 30,909 m of drilling”.
- Xali Gold Corp. advised that Minera Cinco Reales S.A. de C.V. has commenced work on the San Dieguito de Arriba plant in Nayarit. The company is planning to carry their first bulk sample test by the end of May. The company will be allowed to conduct the bulk test work while the environmental impact permit is authorized. “Xali Gold will have the right to receive 15% of the net profits from any mineral that is processed at the SDA Plant”.
ON DEALS AND CORPORATE ISSUES
- GR Silver Mining Ltd. updated on work and plans for 2023 at its 43,187 ha. Plomosas project in Sinaloa. The property hosts intermediate to low sulfidation epithermal mineralization on the Plomosas, San Marcial and San Juan-La Colorada areas, on which a new resource estimate was filed early this month, based in 60,020 m of drilling in 424 holes. Indicated resources stand at 15 M tonnes @ 117 gpt Ag containing 55 M Oz Ag, or 179 gpt AgEq, containing 85 M Oz AgEq. Inferred resources stand at 9 M tonnes @ 78 gpt Ag, containing 22 M Oz Ag, or 171 gpt AgEq, holding 49 M Oz AgEq. A drill rig has been mobilized to the SE Area in San Marcial and a 12,500 m drilling exploration program has been recommended. On the cost reduction initiative, staff has been reduced by 38% and vehicles by 50%, “with executives taking reduced cash salaries and directors waiving cash fees.”
- Silver Valley Metals Corp. provided an update on its MexicCan Lithium-Potassium project in Zacatecas-San Luis Potosí. The company “has been in discussions with LitioMX, (the national lithium company of Mexico)” pertaining the possibility of forming a partnership for exploration and production on Silver Valley’s concessions. “The negotiation is focused solely on the lithium component of the multi-commodity deposit(s). This represents an inferred resource of 243,000 tonnes of lithium carbonate equivalent (LCE) defined to date at surface to an average depth of only 5 metres”.
ON SOCIAL RESPONSIBILITY
- Zacatecas Silver Corp. continues to build on its relationship with the Tetlama community, on its Esperanza project in Morelos. “The Company continues to provide on-going social benefit support with programs currently implemented including: medical assistance, funerary compensation, educational scholarships, and the community forest fire fighting brigade”. The company is combining resources with the community nucleus for the construction of the first stage of a new community cemetery.
On the image below: Silicified breccia-vein ridge in a copper project in the Sonoran Desert. Picture by Jorge Cirett.

The Mining and Exploration News in Mexico: Highlights on the First Week of May, 2023.

Quartz veining hosted in a hydrothermaly-altered intrusive
By Miguel A Heredia
During the 18th week of the year (May 1st to May 7th, 2023), at least 28 press releases were announced by companies working in Mexico, and 2 news published by the media, with eleven reporting resources and developments of their properties, six commenting on Mexican issues, four communicating production and financial results, three disclosing deals and corporate issues, three announcing financing issues, two informing on exploration results, and one discussing social issues. ON MEXICO ISSUES, Fortuna Silver reported an illegal blockade at its San Jose mine in Oaxaca. At least 40 companies from Canada and the United States that operate in Mexico expressed their intention to protect themselves after the approval of the reforms to the Mining Law. Chesapeake has initiated legal proceedings against the Dirección General de Minas of Mexico (DGM) with the Federal Court of Administrative Justice in the state of Durango, Mexico in response to the DGM’s cancellation of the San Vicente 3 mineral concession. Radius filed a legal demand with a Federal Mexican Court to obtain title to the Amelia 4 mining concession at its Amalia project in Chihuahua. The Senate of Mexico approved the mining reform that reduces and facilitates the cancellation of concessions. Bendito Resources, Infinitum Copper, Pan American Silver, and Silver Tiger reported the best drilling intercepts in Mexico on the first week of May, 2023. ON EXPLORATION, In Sonora, Infinitum Copper reported results from 6 of 12 drill holes collared at its Adelita project. In Chihuahua, Reyna Silver provided an update on their Batopilas and Guigui projects. ON MINING, Capstone, Argonaut, and First Majestic reported Q1, 2023 production and financial results for their Mexican operations. Minera Alamos reported full year 2022 production and financial results from its Santana property in Sonora. ON FINANCING, Sonoro Gold announced it plans to undertake a non-brokered private placement for gross proceeds of up to CAD $3M (Cerro Caliche project, Sonora). Kootenay announced a private placement for gross proceeds of $4M (Columba project, Chihuahua). First Majestic announced that its Board of Directors has declared a cash dividend payment in the amount of $0.0057 per common share for Q1, 2023. ON RESOURCES AND DEVELOPMENT, Xali received the change in soil use permit for its El Oro Tailings project in Mexico State. Bendito Resources presented results from the last 9 of 18 RC holes drilled at its El Alacran project in Sonora. Silver Tiger announced results from its ongoing drill program at its El Tigre project in Sonora. Capstone reported Mineral Reserves and Mineral Resources for its Cozamin property in Zacatecas as at January 1, 2023. GR Silver filed a NI 43-101 technical report to provide an updated resource estimate for its Plomosas project in Sinaloa. GoGold released additional results from its ongoing drilling campaign at its Los Ricos South project in Jalisco. Oroco presented a Mineral Resource Estimate as of April 21, 2013 for its Santo Tomas project in Sinaloa. Prime announced an updated Mineral Resource Estimate for its Los Reyes property in Sinaloa. Pan American Silver released results of eighth holes drilled at La Colorada Skarn project in Zacatecas. Minera Alamos announced positive results of an independent Preliminary Economic Assessment for its Cerro de Oro project in Zacatecas. Torex provided the second quarterly update on its Media Luna project in Guerrero. ON DEALS AND CORPORATE ISSUES, Bear Creek announced its CEO succession (Mercedes mine, Sonora). GR Silver announced the retirement of its CFO and the appointment of its replacement (Plomosas project, Sinaloa). Tarachi signed a definitive agreement for the sale of Magistral Tailings project in Durango. ON SOCIAL RESPONSIBILITY, Almaden completed a social impact assessment relating to its Ixtaca project in Puebla, and underlying mineral claim area.
ON MEXICO ISSUE
- Fortuna Silver Mines Inc., reported an illegal blockade at its San Jose mine in Oaxaca due to a group of workers did not agree with the estimated amount the Company is to distribute among the workforce as part of the worker´s profit sharing entitlement. Profit sharing is a transparent calculation and is payable in accordance with Mexican legislation. As a consequence, operations at the mine have been temporarily halted.
- At least 40 companies from Canada and the United States that operate in Mexico expressed their intention to protect themselves after the approval of the reforms to the Mining Law by the government because they consider that they are violating their rights and that they are being changing the rules of the game. The law firm Von Wobeser y Sierra, anticipated that they will also consider the international arbitration considered as a mechanism to resolve disputes within the framework of the Free Trade Agreement between Mexico, the United States and Canada (T-MEC) and the Trans-Pacific Economic Cooperation Agreement (TPP). The elimination of the concepts of Free Land and First Applicant are the elements that most concern companies because with them the government could “legalize” the non-granting of concessions to private parties, by giving the exploration monopoly to the Mexican Geological Service (SGM). ), warned the Mining Chamber of Mexico (Camimex). Until now, the Canadian mining company Silver Bull Resources presented in March to the International Center for Settlement of Investment Disputes (ICSID) its intention to claim economic damages for at least USD $178M for the blockade of its Sierra Mojada Project since September 2019. The American Vulcan Materials presented to ICSID a claim for an estimated damage of at least USD 1.9 B against Mexico for the closure and occupation of the Sac-Tun mine (formerly Calica) and the Punta Venado pier in Playa del Carmen. A resolution on this issue is pending since May 2022.
- Chesapeake Gold Corporation has initiated legal proceedings against the Dirección General de Minas of Mexico (DGM) with the Federal Court of Administrative Justice in the state of Durango, Mexico in response to the DGM’s cancellation of the San Vicente 3 mineral concession, on the basis that the Company did not provide adequate evidence to support the Company’s performance of the exploration work required to maintain the concession. The Company’s legal position, approved by external Mexican legal counsel, is that the work required to maintain the concession was conducted on the property and appropriate evidence was submitted to the DGM to substantiate the work. The San Vicente 3 mineral concession is one of 12 mineral concessions comprising the Metates property, representing 700 hectares of the 4,260 hectares in the Metates project, and encompasses a portion of the Metates mineral resource. The Company intends to vigorously defend its position with respect to the San Vicente 3 mineral concession.
- Radius Gold Inc., filed a legal demand with a Federal Mexican Court to obtain title to the Amelia 4 mining concession at its Amalia project in Chihuahua. “Radius and project JV partner Pan American Silver Corp. have completed all the requirements, fee payments and surveys for the Amalia 4 application. The mining authority of Chihuahua has processed and approved the submission without fault and passed the license to the Mexico Mining Directorate proposing title issuance. The regulated time for the mining authority to comment and request revision has passed and granting of title is a legal requirement under the mining law. Radius has filed a legal demand to enforce the granting of title. Radius legal counsel believes the Company has clear legal right to the application and title. Legal counsel has been successful in obtaining granted concessions in similar situations recently”.
- The Senate of Mexico approved the mining reform that reduces and facilitates the cancellation of concessions. The legal changes were approved despite Canada’s claim and in an express session in which twenty laws and reforms were endorsed in just five hours. The senators approved modifications to the Mining, National Water, General Ecological Balance and Environmental Protection laws, and the General for the Prevention and Integral Management of Waste. The reform will allow the government to only grant mining concessions through a public tender and with prior consultation with indigenous peoples, in addition to facilitating the revocation of the license for environmental damage. The reform could generate tensions with the partners of the T-MEC, in particular with Canada, which has already complained in recent days. The Canadian Minister of International Trade, Mary Ng, revealed last Wednesday that she spoke with the Secretary of the Economy of Mexico, Raquel Buenrostro, to express the “concern” of the Canadian government with the then proposed reform of the country’s mining sector, in the that Canadian companies constitute the largest foreign investor.
- GoGold Resources Inc., Bendito Resources Inc., Infinitum Copper Corp., Pan American Silver Corp., and Silver Tiger Metals Inc., reported the best drilling intercepts in Mexico on the first week of May, 2023. Details are shown in the table below:
ON EXPLORATION
- Infinitum Copper Corp., reported results from 6 of 12 drill holes collared at its Adelita project in Sonora. Drilling highlights include hole ADD-22-0021 with 0.51% Cu, 0.16 g/t Au, 16 g/t Ag, and 0.6% Zn (1% CuEq) over a true width (TW) of 19.85m, including 0.83% Cu, 0.22 g/t Au, 22 g/t Ag and 0.8% Zn (1.51% CuEq) over a TW of 7.98m, including 0.41% Cu, 0.16 g/t Au, 14 g/t Ag, and 0.5% Zn (0.83% CuEq) over a TW of 8.69m; and hole AD-22-0028 with 0.8% Cu, 0.35 g/t Au, and 19 g/t Ag (1.22% CuEq) over a TW of 48.7m, including 0.85% Cu, 0.31 g/t Au, and 29 g/t Ag (1.34% CuEq) over a TW of 20.38m, including 1.03% Cu, 0.51 g/t Au, and 16 g/t Ag (1.54% CuEq) over a TW of 20.76m. “AD-22-0028 is the only drill hole which has intersected the large and distinct magneto-telluric anomaly on the eastern flank of the Cerro Grande anticline”. The intersection of hole AD-22- 0028 is open to the north, east and west.
- Reyna Silver Corp., provided an update on their Batopilas and Guigui projects in Chihuahua. At Batopilas, Chihuahua, the company has carried out detailed sampling and structural programs, as well as conducted a detailed AMT geophysics study to outline major structures and features that may control vein control and location of mineralization, as well as to understand the historic ore shots geometry and mineralization surface expressions , including the newly identified gold-bearing structures. The company plans to drill again in the property a minimum of 3,000m once the final combining of the historical data, drill results, and detailed follow-up work is complete. At Guigui project, Chihuahua, the previous Phase 1 and 2 of drilling revealed critical components of an important CRD system. These drill programs identified a 0.5 square km skarn footprint that remains open in all directions. The company recently executed a Natural Source Audio MagnetoTellurics (NSAMT) survey and is waiting for the final interpretation to integrate into the developing drill-target model for the Phase 2 drilling program this year.
ON MINING
- Capstone Copper Corp., reported Q1, 2023 production and financial results from its Cozamin property in Zacatecas. The company produced 11.65M Lb Cu at a cash cost of 1.72 per Lb Cu produced. Realized copper price was USD $4.17 per Lb.
- Argonaut Gold Inc., reported production and financial results from their Mexican operations. At La Colorada, Sonora, the company reported that it sold 5,086 Oz Au; a cost of sales of USD $12.7M; a cost of sales per Oz Au sold of USD $2,505; a production cost of USD $8M; a cash and all in sustaining cost per Oz Au sold of USD $2,229 and USD $2,333 respectively. At San Agustin, Durango, it reported that 11,491 Oz Au were sold; a cost of sales of USD $22.7M; a cost of sales per Oz Au sold of USD $1,980; a production cost of USD $17.4M; a cash and all in sustaining cost per Oz Au sold of USD $1,558 and USD $1,627 respectively. At El Castillo, Durango, the company reported that it sold 7,358 Oz Au; a cost of sales of USD $14.5M; a cost of sales per Oz Au sold of USD $1,976; a production cost of USD $8.3M; a cash and all in sustaining cost per Oz Au sold of USD $1,675 in both cases.
- First Majestic Silver Corp., reported Q1, 2023 production and financial results from their Mexican operations. Figures by mine operation is shown in the table below:
- Minera Alamos Inc., reported full year 2022 production and financial results from its Santana property in Sonora. The company recovered and sold 11.67K Oz Au and reported revenue s of $21.7M; costs of goods sold of $13.5M for gross profits of $8.18M; net income of $5.6M; cash and cash equivalents of $13.15M; and working capital as of December 31, 2022 of $18.3M.
ON FINANCING
- Sonoro Gold Corp., announced it plans to undertake a non-brokered private placement for gross proceeds of up to CAD $3M. The company will use the net proceeds to fund the ongoing development of a proposed heap leach mining operation at its Cerro Caliche project in Sonora.
- Kootenay Silver Inc., announced a private placement for gross proceeds of $4M. Gross proceeds will be used for working capital requirements and other general corporate purposes (Columba project, Chihuahua).
- First Majestic Silver Corp., announced that its Board of Directors has declared a cash dividend payment in the amount of USD $0.0057 per common share for Q1, 2023. The first quarter cash dividend will be paid to holders of record of First Majestic’s common shares as of the close of business on May 18, 2023, and will be distributed on or about June 9, 2023.
ON RESOURCES AND DEVELOPMENT
- Xali Gold Corp., and its partner Sun River Gold Corp., received the change in soil use permit for its El Oro Tailings project in Mexico State. This is the main permit required for the El Oro Tailings project that allows moving out the tailings from the historical deposition site which is within the town of El Oro and to the industrial processing site outside of the town.
- Bendito Resources Inc., presented results from the last 9 of 18 RC holes totaling 2,031m drilled at its El Alacran project in Sonora as part of the 2023 Phase 1 exploration program focused on demonstrating the southeastward extension of mineralization from the historical resources established at Loma Bonita and Mesa de Plata. Drilling highlights include hole BSS-23-011 with 0.13 g/t Au and 9 g/t Ag (0.24 g/t AuEq) over 33m, including 0.26 g/t Au and 20 g/t Ag (0.5 g/t AuEq) over 3m, plus 0.89 g/t Au and 22 g/t Ag (1,15 g/t AuEq) over 27m, including 1.89 g/t Au and 32 g/t Ag (2.27 g/t AuEq) over 6m, plus 1.32 g/t Au and 36 g/t Ag (1.74 g/t AuEq) over 3m; hole BSS-23-015 with 0.45 g/t Au and 2 g/t Ag (0.48 g/t AuEq) over 24m, including 2.37 g/t Au and 1 g/t Ag (2.39 g/t AuEq) over 3m, plus 0.27 g/t Au and 14 g/t Ag (0.44 g/t AuEq) over 63m, including 0.49 g/t Au and 39 g/t Ag (0.94 g/t AuEq) over 15m, plus 0.11 g/t Au and 17 g/t Ag (0.31 g/t AuEq) over 52.5m, including 0.21 g/t Au and 42 g/t Ag (0.71 g/t AuEq) over 7.5m; hole BSS-23-016 with 0.31 g/t Au and 11 g/t Ag (0.45 g/t AuEq) over 66m, including 2.26 g/t Au and 4 g/t Ag (2.3 g/t AuEq) over 7.5m, 8.06 g/t Au and 1 g/t Ag (8.07 g/t AgEq) over 1.5m, plus 0.15 g/t Au and 4 g/t Ag (0.2 g/t AuEq) over 19.5m, plus 0.16 g/t Au and 2 g/t Ag (0.19 g/t AuEq) over 12m; and hole BSS-23-018 with 0.16 g/t Au and 4 g/t Ag (0.21 g/t AuEq) over 9m, plus 0.08 g/t Au and 39 g/t Ag (0.53 g/t AuEq) over 93m, including 0.08 g/t Au and 84 g/t Ag (1.07 g/t AuEq) over 7.5m, plus 0.09 g/t Au and 59 g/t Ag (0.79 g/t AuEq) over 15m.
- Silver Tiger Metals Inc., announced results from its ongoing drill program at its El Tigre project in Sonora. Highlights of the ongoing drilling program include hole ET-23-457 in the Sulphide Zone with 0.11 g/t Au, 297 g/t Ag, 0.28% Cu, 1.4% Pb, and 2.2% Zn (439 g/t AgEq) over 38.7m, including 0.17 g/t Au, 693 g/t Ag, 0.6% Cu, 3% Pb, and 4.6% Zn (987 g/t AgEq) over 15.8m, including 0.15 g/t Au, 1,100 g/t Ag, 0.87% Cu, 5.1% Pb, and 8% Zn (1,581 g/t AgEq) over 6.3m, including 0.13 g/t Au, 1,246 g/t Ag, 1% Cu, 6.4% Pb, and 13.4% Zn (1,949 g/t AgEq) over 3.4m, including 0.15 g/t Au, 1,943 g/t Ag, 1.58% Cu, 7.3% Pb, and 10.9% Zn (2,642 g/t AgEq) over 0.6m. “This hole added an additional 100 metres of down dip extent to east from Hole 428 to 457 and what it was thought was a thin zone of a little over a meter went to almost 39 meters of high grade mineralization. Step out drilling now continues south”.
- Capstone Copper Corp., reported Mineral Reserves and Mineral Resources for its Cozamin property in Zacatecas as at January 1, 2023. The company announced Probable Mineral Reserves of 10.2M tonnes with grades of 1.6% Cu, 43 g/t Ag, 0.5% Zn, and 0.3% Pb. It also presented Measured + Indicated Resources of 19.7M tonnes with grades of 1.58% Cu, 47 g/t Ag, 1.1% Zn, and 0.4% Pb, and Inferred Resources of 12.3M tonnes with grades of 0.72% Cu, 38 g/t Ag, 2% Zn, and 0.8% Pb. (Mineral Reserve is reported inclusive of Mineral Resource).
- GR Silver Mining Ltd., filed a NI 43-101 technical report to provide an updated resource estimate for its Plomosas project in Sinaloa as of March 15, 2023. The company reported Indicated Resources of 15M tonnes with grades of 117 g/t Ag, 0.18 g/t Au, 0.4% Pb, 0.6% Zn, and 0.03% Cu (179 g/t AgEq) for a total of 55M Oz Ag, 84.5K Oz Au, 143.4M Lb Pb, 201-6M Lb Zn, and 8.96M Lb Cu (85M Oz AgEq) and Inferred Resources of 9M tonnes with grades of 78 g/t Ag, 0.38 g/t Au, 0.7% Pb, 1% Zn, and 0.03% Cu (171 g/T AgEq) for a total of 22M Oz Ag, 108.2K Oz Au, 143.4M Lb Pb, 203.8M Lb Zn, and 6.7M Lb Cu (49M Oz AgEq).
- GoGold Resources Inc., released additional results from its ongoing drilling campaign at Eagle Area within its Los Ricos South project in Jalisco. Drilling highlights include hole LRGAG-22-162 with 6.07 g/t Au and 1,064 g/t Ag (20.26 g/t AuEq or 1,519 g/t AgEq) over 31m, including 19.38 g/t Au and 3,922 g/t Ag (71.67 g/t AuEq or 5,375 g/t AgEq) over 8.1m, including 144 g/t Au and 36,319 g/t Ag (628.25 g/t AuEq or 47,119 g/t AgEq) over 0.7m; hole LRGAG-22-147 with 1.06 g/t Au and 41 g/t Ag (1.63 g/t AuEq or 122 g/t AgEq) over 46.6m, including 3.24 g/t Au and 76 g/t Ag (4.25 g/t AuEq or 319 g/t AgEq) over 13.4m, including 24.3 g/t Au and 45 g/t Ag (24.9 g/t AuEq or 1,867 g/t AgEq) over 0.8m; hole LRGAG-22-150 with 6.96 g/t Au and 65 g/t Ag (7.83 g/t AuEq or 587 g/t AgEq) over 11.3m, including 12.02 g/t Au and 100 g/t Ag (13.36 g/t AuEq or 1,002 g/t AgEq) over 6.3m, including 32.1 g/t Au and 157 g/t Ag (34.19 g/t AuEq or 2,564 g/t AgEq) over 1.1m; hole LRGAG-22-158 with 2.19 g/t Au and 138 g/t Ag (4.03 g/t AuEq or 302 g/t AgEq) over 24.6m, including 3.87 g/t Au and 340 g/t Ag (8.41 g/t AuEq or 631 g/t AgQ) over 8.8m, including 13.06 g/t Au and 2,660 g/t Ag (48.52 g/t AuEq or 3,639 g/t AgEq) over 0.8m; and hole LRGAG-22-161 with 2.51 g/t Au and 339 g/t Ag (7.03 g/t AuEq or 527 g/t AgEq) over 33m, including 5.16 g/t Au and 945 g/t Ag (17.76 g/t AuEq or 1,332 g/t AgEq) over 9.6m, including 19.58 g/t Au and 3,665 g/t Ag (68.46 g/t AuEq or 5,134 g/t AgEq) over 1.3m. GoGold continues to work toward an upcoming updated Los Ricos South Mineral Resource and Preliminary Economic Assessment, which is expected to be completed by the end of June, 2023.
- Oroco Resource Corp., presented a Mineral Resource Estimate as of April 21, 2023 for its Santo Tomas project in Sinaloa. The company reported Indicated Resources of 487.3M tonnes with grades of 0.32% Cu, 0.009% Mo, 0.03 g/t Au, and 2 g/t Ag (0.36% CuEq) for a total of 3.4 B Lb Cu, 91.9M Lb Mo, 392.8K Oz Au, and 32.7M Oz Ag (3.86 B Lb CuEq), and Inferred Resources of 599.9M tonnes with grades of 0.32% Cu, 0.007% Mo, 0.03 g/t Au, and 2 g/t Ag (0.36% CuEq) for a total of 4.17 B Lb Cu, 95.6M Lb Mo, 500.6K Oz Au, and 38.5M Oz Ag (4.69 B Lb CuEq). Oroco believes Santo Tomas has a substantial resource that is exposed at or near surface and has robust potential to support a large, low-cost open-pit mining operation. “The MRE confirms the high potential of the project, which remains open to the north and south, with clear potential for further expansion of the resource and further conversion of MRE Inferred resources to an Indicated resource classification”.
- Prime Mining Corp., announced an updated Mineral Resource Estimate for its Los Reyes property in Sinaloa. The company reported in the Mill Category a total of 16.6M tonnes of Indicated Resources with grades of 1.66 g/t Au and 60 g/t Ag (2.44 g/t AuEq) for a total of 888K Oz Au and 32.18M Oz Ag (1.3M Oz AuEq) contained, and Inferred Resources of 10.8M tonnes of 1.18 g/t Au and 47 g/t Ag (1.79 g(/t AuEq) for a total of 411K Oz Au and 16.39M Oz Ag (623K Oz AuEq) contained. In the Heap Leach Category Prime reported a total of 10.5M tonnes of Inferred Resources with grades of 0.37 g/t Au and 9 g/t Ag (0.49 g/t AuEq) for a total of 125K Oz Au and 3.08M Oz Ag (165K Oz AuEq), and Inferred Resources of 7.3M tones of 0.37 g/t Au and 8 g/t Ag (0.47 g/t AuEq) for a total of 86K Oz Au and 1.9M Oz Ag (111K Oz AuEq). Indicated Resources (Mill + Heap Leach) are 27.2M tonnes of 1.16 g/t Au and 40 g/t Ag (1.68 g/t AuEq) for a total of 1.01M Oz Au and 35.5M Oz Ag (1.47M Oz AuEq) and Inferred Resources (Mill + Heap Leach) of 18.1M tonnes of 0.85 g/t Au and 31 g/t Ag (1.26 g/t AuEq) for a total of 497K Oz Au and 18.3M Oz Ag (734K Oz AuEq).
- Pan American Silver Corp., released results of eighth holes drilled at La Colorada Skarn project in Zacatecas. Drilling highlights include hole D-96-10-22 with 391 g/t Ag, 0.13% Cu, 10.8% Pb, and 8.5% Zn over 64.3m, including 914 g/t Ag, 0.19% Cu, 25.2% Pb, and 16.7% Zn over 23.25m, plus 154 g/t Ag, 0.03% Cu, 2.2% Pb, and 0.9% Zn over 22.75m, plus 27 g/t Ag, 0.23% Cu, 2.5% Pb, and 5% Zn over 13.3m, plus 37 g(/t Ag, 0.14% Cu, 1.1% Pb, and 6.4% Zn over 135.7m; hole D-96-12-23 with 233 g/t Ag, 0.1% Cu, 6.6% Pb, and 7.3% Zn over 109.55m, including 487 g/t Ag, 0.15% Cu, 15.5% Pb, and 10.1% Zn over 44.7m, plus 54 g/t Ag, 0.03% Cu, 1.3% Pb, and 2.6% Zn over 18m; hole D-96-09-22 with 106 g/t Ag, 0.03% Cu, 1.3% Pb, and 2.6% Zn over 5m, plus 123 g/t Ag, 0.11% Cu, 3.5%Pb, and 8.6% Zn over 21.2m, plus 162 g/t Ag, 0.05% Cu, 3.5% Pb, and 3.5% Zn over 26.95m, plus 98 g/t Ag, 0.07% Cu, 0.8% Pb, and 4% Zn over 72.6m; hole D-98-11-22 with 165 g/t Ag, 0.12% Cu, 4.4% Pb, and 9.3% Zn over 17.05m, plus 134 g/t Ag, 0.05% Cu, 5.3% Pb, and 6.9% Zn over 6.4m, plus 56 g/t Ag, 0.05% Cu, 1.6% Pb, and 4.2% Zn over 9.90m, plus 152 g/t Ag, 0.02% Cu, 0.9% Pb, and 2.8% Zn over 20.5m, plus 79 g/t Ag, 0.06% Cu, 0.6% Pb, and 1.9% Zn over 14.55m; hole U-138-22 with 122 g/t Ag, 0.08% Cu, 2.7% Pb, and 5.3% Zn over 4.05m, plus 193 g/t Ag, 0.15% Cu, 10.8% Pb, and 9.3% Zn over 71.35m, including 231 g/t Ag, 0.17% Cu, 13-1% Pb, and 11% Zn over 57.95m, plus 49 g/t Ag, 0.14% Cu, 0.4% Pb, and 1.1% Zn over 40.3m; hole U-112-22 with 80 g/t Ag, 0.03% Cu, 1.3% Pb, and 1.2% Zn over 15.25m, plus 141 g/t Ag, 0.06% Cu, 5.8% Pb, and 5.5% Zn over 53.15m, including 243 g/t Ag, 0.08% Cu, 11.3% Pb, and 8.3% Zn over 15.15m, plus 66 g/t Ag, 0.07% Cu, 0.6% Pb, and 3.5% Zn over 14.7m, plus 25 g/t Ag, 0.08% Cu, 1.7% Pb, and 3.8% Zn over 32.95m; and hole D-93-06-23 with 304 g/t Ag, 0.17% Cu, 4.7% Pb, and 2.5% Zn over 21.45m, plus 17 g/t Ag, 0.07% Cu, 1.7% Pb, and 3.8% Zn over 5.05m, plus 40 g/t Ag, 0.02% Cu, 2.7% Pb, and 3.5% Zn over 31.2m, plus 27g/t Ag, 0.1% Cu, 2.9% Pb, and 4.7% Zn over 143.3m, plus 22 g/t Ag, 0.06% Cu, 3.7% Pb, and 5.9% Zn over 5.1m, plus 49 g/t Ag, 0.25% Cu, 1.5% Pb, and 4.4% Zn over 74.2m.
- Minera Alamos Inc., announced positive results of an independent Preliminary Economic Assessment for its Cerro de Oro project in Zacatecas. In April, 2023 it also completed the documentation necessary to formally proceed with the Cerro de Oro permitting process. “Discussions continue with a number of interested lending partners to provide the modest capital funding requirements for the development of the Cerro de Oro mine”.
- Torex Gold Resources Inc., provided the second quarterly update on its Media Luna project in Guerrero. The Media Luna project continues to track overall schedule and budget. “At quarter-end, the project was 24% complete across engineering, procurement, underground development, and surface construction. With no major changes to the project execution plan, first concentrate production remains on track for late 2024, with commercial production still anticipated in early 2025. At quarter end, 34% of upfront project expenditures had been committed, including 22% incurred. The level of spending on the project is expected to increase throughout the remainder of the year, with total project expenditures of USD $390M to USD $440M guided in 2023.
ON DEALS AND CORPORATE ISSUES
- Bear Creek Mining Corporation announced its CEO succession after the previous one decided to retire from such position. This appointment will be effective on June 5, 2023 (Mercedes mine, Sonora).
- GR Silver Mining Ltd., announced the retirement of its CFO and the appointment of its replacement effective immediately (Plomosas project, Sinaloa).
- Tarachi Gold Corp., signed a definitive agreement dated May 2, 2023 with Compañía Minera de Atocha S.A. de C.V., for the sale of Magistral Tailings project in Durango. The company expects to receive USD $5.7M as follow: USD $2.5M on or before closing; USD $0.5 of the USD $1M currently held in Canadian escrow account will be released to Tarachi on or before closing; The remaining USD $500K in the escrow account will be released to Tarachi when Atocha concludes negotiations with the Ejido Magistral, or after 12 months, whichever occurs first; USD $500K will be paid to Tarachi six months from closing, less any contingency costs, if any, that arise after closing that were incurred by Tarachi but not identified during due diligence. US$500K will be paid to Tarachi when 50% of the tailings located on the Magistral Project have been mined, sold and/or processed or after the first complete calendar year of operation at the Magistral Project, whichever occurs first; USD $500K will be paid to Tarachi when 100% of the Magistral Tailings have been mined, sold and/or processed or after the second complete calendar year of operation at the Magistral Project, whichever occurs first; the amount of value-added tax currently owing as that tax benefit is realized by Atocha during operations and product sales from the Magistral Project will be paid to Tarachi, estimated to total approximately USD $650K. Tarachi anticipates the tax benefit will be realized by Atocha and paid to Tarachi within the first year of commercial operations at the Magistral Project.
ON SOCIAL RESPONSIBILITY
- Almaden Minerals Ltd., completed a social impact assessment (SIA) relating to its Ixtaca project in Puebla, and underlying mineral claim area, and the completion of a human rights impact assessment (HRIA) that examines the potential impacts that could be caused if the Ixtaca project is developed in a manner consistent with the Ixtaca Feasibility Study. “The SIA concluded that there were no elements identified that would justify the cancellation of the concessions so long as the necessary social management measures were in place to avoid, mitigate or compensate for the potential negative impacts and amplify the positive ones. The HRIA represents a much more significant and holistic study than the SIA, as it aims to predict, identify, characterize, and assess the potential positive and negative impacts that the Ixtaca project could have during its lifespan on the human rights of both indigenous and non-indigenous communities located within its areas of influence and on other identified project stakeholders. In the event potential impacts are identified, the HRIA proposes strategies to amplify the positive and mitigate or compensate for the negative”.
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On the picture above, quartz veining hosted in a hydrothermally-altered intrusive in a project in Sonora, Mexico. Photo by Miguel A Heredia.
The Mining and Exploration News in Mexico: Highlights on the Third Week of April, 2023.
Copper mineralization (chrysocolla)
By Miguel A Heredia
During the 16th week of the year (April 17th to April 23th, 2023), at least 17 press releases were announced by companies working in Mexico, and 8 news published by the media, with nine commenting on Mexican issues, six communicating production and financial results, four reporting resources and developments of their properties, four disclosing deals and corporate issues, one informing on exploration results, and one announcing financing issues. ON MEXICO ISSUES, Minera Gorrión, a subsidiary of Almaden Minerals, will challenge the cancellation of their concessions in the Municipality of Ixtacamaxtitlan, Puebla. Municipal Presidents (Majors), as representatives of the mining communities of the Chihuahua State, signed and sent a letter to AMLO to request that the Mining Reform initiative be analyzed, since they consider that it will seriously affect employment, health, education, local businesses, and in general, the well-being of the population. The Association of Mining Engineers, Metallurgists and Geologists of Mexico (AIMMGM) requested to expand discussion on mining law before submitting its vote in the Senate. The Plenary of the Chamber of Deputies, with the rejection of the opposition, started the debate that ended in the approval, in “fast track” of a new Mining Law, at the initiative of the parliamentary group of Morena. According to specialists, the Reform to the Mining Law would affect fundamental rights and international treaties, opening an USMCA panel with Canada. With 290 votes in favor, 186 against and one abstention, Morena and his allies in the Chamber of Deputies got ahead of the opposition and approved in plenary session an alternative initiative to that of President Andrés Manuel López Obrador that reforms the Mining Law and other arrangements. Mining companies lose on the Mexican Stock Exchange due to the initiative to reform the Mining Law in Mexico. GoGold and Oroco reported the best drilling intercepts in Mexico on the third week of April 2023. ON EXPLORATION, In Oaxaca, Vortex received community approval for environmental and surface geological surface baseline study at its flagship Zaachila project. ON MINING, First Majestic, Golden Minerals, Avino, and Guanajuato Silver, reported Q1, 2023 production and financial results from their Mexican mine operations. Fresnillo and MAG Silver shipped their first commercial concentrate from the Juanicipio mine in Zacatecas. Bear Creek reported production and financial results from its Mercedes mine in Sonora for the period April 21, 2022 to December 31, 2022. ON FINANCING, Endeavour entered into a Commitment Letter for a senior secured debt facility for up to USD $120M (Terronera project, Jalisco). ON RESOURCES AND DEVELOPMENT, Oroco announced drilling results from its Santo Tomas project, Sinaloa. GoGold released results from its ongoing drilling program from its Los Ricos South property in Jalisco. Endeavour announced its intentions to proceed with the construction of an underground mine and mill at the Terronera project in Jalisco. Heliostar commenced drilling at its Ana Paula property in Guerrero following the re-scoping plans announced previously. ON DEALS AND CORPORATE ISSUES, Chesapeake announced the appointment of its VP of Corporate Development and Investor Relations (Metates project, Durango). Riverside appointed a new Director and presented results from its annual meeting of shareholders (La Union project, Sonora). Canasil signed an option agreement and an exclusivity agreement with Silver Dollar (Nora project, Durango). ON SOCIAL RESPONSIBILITY, No relevant news.
ON MEXICO ISSUE
- Minera Gorrión, a subsidiary of Almaden Minerals Ltd., will challenge the resolution of a judge of the second court district in the state of Puebla to cancel their concessions in the Municipality of Ixtacamaxtitlan, Puebla, avoiding developing open-pit mining projects. Minera Gorrión regretted the resolution to cancel its concessions in Puebla, since it does not include any argument that the company provided in its defense. The company said in an statement that it is important to clarify that, as long as the legal proceedings related to this case continue, the company’s concession title requests remain valid, thus preserving the company and its acquired rights. For more than 20 years, the company has invested more than MXP $900M in exploration, the identification of a mineral deposit, and the planning to develop a modern mining project, which will have a very significant economic impact if authorized. “Minera Gorrión regrets that, in his resolution, the judge does not include any of the arguments that the company provided to defend its case.
- Municipal Presidents (Majors), as representatives of the mining communities of the Chihuahua State, signed and sent a letter to AMLO to request that the Mining Reform initiative be analyzed before it is approved by the Congress since they consider that it will seriously affect employment, health, education, local businesses, and in general, the well-being of the population.
- The Association of Mining Engineers, Metallurgists and Geologists of Mexico (AIMMGM) requested to expand discussion on the draft Decree for the reform of the Mining Law, the National Water Law, the Law of Ecological Balance and Environmental Protection and the General Law for the Prevention and Integral Management of Waste related to Mining and Water Concessions before submitting its vote in the Senate.
- The Plenary of the Chamber of Deputies, with the rejection of the opposition, started the debate that ended in the approval, in “fast track” of a new Mining Law, at the initiative of the parliamentary group of Morena. Deputy Ignacio Mier Velazco, coordinator of the Morena Parliamentary Group said that “for the first time it is regulated, transparency is given, the people of Mexico are given certainty, the environment is protected and the water is taken care of”. However, during the discussion in general, the opposition showed their rejection of the approval of this law, for not listening to the voices of indigenous people, peasants, or defenders of the environment. The deputy Laura Patricia Contreras Duarte (PAN), assured that the initiatives proposed by the President of the Republic are nothing more than “whims”.
- According to specialists, the Reform to the Mining Law would affect fundamental rights and international treaties, opening an USMCA panel with Canada. The mining and water reform initiative, which is under discussion in Congress, has generated concern in various sectors due to the possible violations of fundamental rights that its entry into force could imply, said lawyers who are experts in the matter. One of the aspects that have been the subject of criticism is the elimination of requests for processing of new concessions that are pending resolution. The initiative is a very serious impact on foreign direct investment, since it generates great discontent in the foreign mining sector, especially Canada, which belongs to the USMCA. As a result of this, it is very likely that a dispute resolution panel will be initiated because it is a clear violation of Mexico’s obligations in the protection of foreign investment, noting that Canadian investment is very large in Mexico, so it is a direct affectation to their interests.
- With 290 votes in favor, 186 against and one abstention, Morena and his allies in the Chamber of Deputies got ahead of the opposition and approved in plenary session an alternative initiative to that of President Andrés Manuel López Obrador that reforms the Mining Law and other arrangements. The proposal -voted only in general and which is still being discussed in particular- reduces the validity of mining concessions from 50 to 30 years, with the possibility of extending them for another 25 years and at the end of that term, in case of participating in the new tender of the same lot, the holder would have preference for another 25 non-extendable years. In what the opposition described as an “albazo”, the parliamentary majority of Morena resumed the presidential initiative on the matter and presented it as its own initiative to discuss and vote on it on “fast-track”. It also conditions the mining concession to water availability and, where appropriate, to the mining water concession previously obtained, in accordance with the spirit of the Constitution in this matter, which gives priority to the human and domestic use of water. The obligation of the concessionaires to carry out the efficient use and reuse of water and, where appropriate, the restoration of the water resource is established. In its reform proposal, the Federal Executive proposed that the concession only be granted for mineral or substance susceptible to exploitation, which will allow, in its opinion, greater control and generation of resources for the State and the affected communities. In another aspect, the federal government establishes in its proposal that acts of private law are not recognized for the transfer of the mining concession, so that the Ministry of Economy may authorize the transfer only when the requirements requested for the original concession are met. That is, the concession will not serve to guarantee the obligations of the concession holder. On this, the initiative of the Morena legislators establishes that the transmission and guarantee of mining concessions will be carried out with the authorization of the General Directorate of Mines of the Ministry of Economy, as long as it is verified that the transmission is between two mining companies, in order to avoid speculation. In the case of the guarantee, when it is a company that is in operation. In order to regulate and avoid predatory, harmful mining activities that are contrary to the right to water, a healthy environment, people’s health and, in general, the rights of the towns and communities where said projects are carried out, the initiative of the Executive proposes presenting a social impact study and a Restoration, Closing and Post-closing Program. Likewise, it requires a Mine Closure Plan, the presentation of letters of credit to guarantee compliance with the mitigation and restoration obligations and a Waste Management Program. The initiative of the legislators considers the instrument of a letter of credit to guarantee the Mine Closure Plan.
- Mining companies lose on the Mexican Stock Exchange due to the initiative to reform the Mining Law in Mexico. Grupo México, the main copper producer worldwide, fell 1.73%, to MXP $91.43 pesos per share, and Industrias Peñoles, the largest silver producer, lost 1.49%, to MXP $279.29 per share. The miners are concerned about the possible negative effects on their profitability and the economic impact on the country, since the proposal implies higher costs for them and a shorter time to recover the expenses,” said José María de las Rivas, Analyst at Intercam Bank.
- GoGold Resources Inc., and Oroco Resources Corp., reported the best drilling intercepts in Mexico on the third week of April, 2023. Details are shown in the table below:

ON EXPLORATION
- Vortex Metals Inc., received community approval for environmental and surface geological surface baseline study at its flagship Zaachila project in Oaxaca. The environmental study will be carried out by a group of 10 environmental specialists and will involve a total area of 500 hectares. The company also will conduct geological mapping, sampling, and trenching on the property.
ON MINING
- First Majestic Silver Corp., reported Q1, 2023 production and financial results from their Mexican operations. Production figures by mine operation is shown in the table below:

The Company is planning to release its Q1, 2023 unaudited financial results on May 4, 2023.
- Golden Minerals Company announced Q1, 2023 production figures from its Rodeo project in Durango. The company mined 154,371 tonnes, stockpiled 18,467 tonnes awaiting process, stockpiled 133,349 tonnes of low grade, and processed 54,272 tonnes of 1.6 g/t Au and 9 g/t Ag with metallurgical recoveries of 72.6% and 75.5% respectively, to produce 2,081 Oz of payable Au and 11,535 Oz Ag (2,219 Oz AuEq). The average realized price before refining and selling cost was USD $1,891.24 for Oz Au and USD $22.60 for Oz Ag.
- Avino Silver & Gold Mines Ltd., reported Q1, 2023 production and financial results from its Avino mine in Durango. The company milled 159,757 tonnes of 51g/t Ag, 0.58 g/t Au, and 0.47% Cu with metallurgical recoveries of 89%, 77%, and 84% respectively to produce 234.3K Oz Ag, 2,286 Oz Au, and 1.4M Lb Cu (or 678.2K Oz AgEq).
- Guanajuato Silver Company Ltd., announced Q1, 2023 consolidated production figures from their Mexican operations in Durango (Topia) and Guanajuato (El Cubo, Valenciana, and San Ignacio). The company mined 162,116 tonnes and milled 160,182 tonnes to produce 458.8K Oz Ag, 4,413 Oz Au, 906.7K Lb Pb, and 1.1M Lb Zn (938K Oz AgEq), with metallurgical recoveries of 83.9%, 81.1%, 87.1%, and 83.5% respectively.
- Fresnillo plc (56%) and MAG Silver Corp. (44%), shipped their first lead-zinc commercial concentrate from the Juanicipio mine in Zacatecas. During March 2023, milling rates were around 60% of design, delivering an average of 2,476 tonnes per day with rates periodically reaching up to 3,900 tonnes per day. Current mill feed is a combination of mineralized material from underground stopes and lower grade stockpiles. Over the course of March 2023, lower grade commissioning material was processed with recovery rates averaging 84% for Ag, slightly above expectations at this stage of the commissioning.
- Bear Creek Mining Corporation reported production and financial results from its Mercedes mine in Sonora for the period April 21, 2022 to December 31, 2022. The company mined 337,108 tonnes and processed 412,457 tonnes of 3.02 g/t Au and 3 g/t Ag to produce 34,628 Oz Au and 8,489 Oz Ag at cash and all-in-sustaining cost of USD $1,193 and USD $1,627 per Oz Au sold and streamed respectively. The company reported revenues of USD $61M .
ON FINANCING
- Endeavour Silver Corp., entered into a Commitment Letter with Societe Generale and ING Bank N.V. for a senior secured debt facility for up to USD $120M to proceed with the construction of an underground mine and mill at its Terronera property in Jalisco.
ON RESOURCES AND DEVELOPMENT
- Oroco Resource Corp., announced drilling results from its Santo Tomas project, Sinaloa. Drilling highlights include hole NO-44 with 0.83% Cu, 0.011% Mo, and 0.072 g/t Au (0.93% CuEq) over 352.5m (best hole drilled on the project to date); and hole NO-45 with 0.44% Cu, 0.011% Mo, and 0.035 g/t Au (0.50% CuEq) over 329.8m. The company has now completed its North Zone drill program in support of the planned Preliminary Economic Assessment (PEA).
- GoGold Resources Inc., released results from the ongoing drilling program at Eagle Area within its Los Ricos South property in Jalisco. Drilling highlights include hole LRGAG-22-134 with 1.13 g/t Au, 69 g/t Ag (2.05 g/t AuEq or 154 g/t AgEq) over 36.9m, including 2.28 g/t Au and 134 g/t Ag (4.06 g/t AuEq or 305 g/t AgEq) over 16.5m, including 8.55 g/t Au and 824 g/t Ag (19.53 g/t AuEq or 1,465 g/t AgEq) over 1.3m; hole LRGAG-22-136 with 1.03 g/t Au and 65 g/t Ag (1.9 g/t AuEq or 142 g/t AgEq) over 53m, including 2.16 g/t Au and 56 g/t Ag (2.9 g/t AuEq or 218 g/t AgEq) over 20.2m, including 9.54 g/t Au and 490 g/t Ag (16.07 g/t AuEq or 1,205 g/t AgEq) over 0.7m; hole LRGAG-22-138 with 3.06 g/t Au and 193 g/t Ag (5.64 g/t AuEq or 423 g/t AgEq) over 27.3m, including 15.64 g/t Au and 908 g/t Ag (27.74 g/t AuEq or 2,081 g/t AgEq) over 1.4m, including 5.43 g/t Au and 563 g/t Ag (12.94 g/t AuEq or 970 g/t AgEq) over 1m; hole LRGAG-22-141 with 3.82 g/t Au and 114 g/t Ag (5.34 g/t AuEq or 400 g/t AgEq) over 28.4m, including 43.30 g/t Au and 99 g/t Ag (44.62 g/t AuEq or 3,346 g/t AgEq) over 0.9m, plus 2.10 g/t Au and 189 g/t Ag (4.61 g/t AuEq or 346 g/t AgEq) over 11.4m, including 9.43 g/t Au and 710 g/t Ag (18.89 g/t AuEq or 1,417 g/t AgEq) over 1.3m; and hole LRGAG-22-145 with 1.94 g/t Au and 272 g/t Ag (5.56 g/t AuEq or 417 g/t AgEq) over 42.2m, including 3.7 g/t Au and 700 g/t Ag (13.03 g/t AuEq or 977 g/t AgEq) over 14.1m, including 16.15 g/t Au and 5,740 g/t Ag (92.68 g/t AuEq or 6,951 g/t AgEq) over 0.5m. “These holes, combined with additional drilling in the Los Ricos South Main area, should add value to the upcoming updated Los Ricos South Mineral Resource and Preliminary Economic Assessment”.
- Endeavour Silver Corp., announced its intentions to proceed with the construction of an underground mine and mill at the Terronera project in Jalisco. It will consists of a process plant with 2,000 tonne per day capacity and an initial capital expenditure cost of USD $230M, partially offset by a decrease in sustaining capital to USD $88.3M over the life of the mine. The company expects a 21-month construction period, including 3 to 6 months ramp up to full production with initial production expected in Q4, 2024.
- Heliostar Metals Limited commenced drilling at its Ana Paula property in Guerrero following the re-scoping plans announced previously. The program will consist of 3,000 – 3,600m of drilling in 16 – 24 drill holes, to increase the size and grade of the resource and reserve, provide the geotechnical information required to complete underground mine planning, and provide metallurgical samples testwork designed to improve gold recovery and simplify the mill flow sheet.
ON DEALS AND CORPORATE ISSUES
- Chesapeake Gold Corp., announced the appointment of its VP of Corporate Development and Investor Relations, effective May 29, 2023 (Metates project, Durango).
- Riverside Resources Inc., appointed a new Independent Director and presented results from its annual meeting of shareholders (La Union project, Sonora).
- Canasil Resources Inc signed an option agreement and an exclusivity agreement with Silver Dollar Resources Inc. Pursuant to the agreements, Silver Dollar will provide Canasil with a USD $200K non-interest-bearing loan in return for a two-month exclusivity period to conduct due diligence on the assets of Canasil and an option to earn a 100% interest in Canasil’s Nora property in Durango. Under the terms of the Nora Option, Silver Dollar can earn a 100% interest in the Property by incurring total exploration expenditures of USD $3M and making cash payments totaling USD $375K over five years. Upon earning a 100% interest in the Property, Silver Dollar will grant Canasil a 3% net smelter returns royalty ,with Silver Dollar having the right to buy back 1% of the royalty for USD $3M. After granting the royalty, Silver Dollar will also pay an annual royalty of USD $25K which will be offset against the 1% royalty buyback.
ON SOCIAL RESPONSIBILITY
- No relevant news.
Content like what you have just read can be seen at https://gambusinoprospector.com/ and at LinkedIn’s Mexico Mineral Exploration Group.
On the picture above, Cu mineralization (chrysocolla) in a prospect in Chihuahua, Mexico. Photo by Miguel A Heredia.
The Mining and Exploration News in Mexico: Highlights on the First Week of April, 2023.
Onyx Vein
By Miguel A Heredia
During the 14th week of the year (April 3rd to April 9th, 2023), at least 16 press releases were announced by companies working in Mexico, with five informing on exploration results, four reporting resources and developments of their properties, four disclosing deals and corporate issues, one communicating production and financial results, one commenting on Mexican Issues, and one announcing financing issues. ON MEXICO ISSUES, Silver Tiger was the only mining company reporting drilling intercepts in Mexico on the first week of April, 2023. ON EXPLORATION, In Sonora, Colibri reported assays results of sampling completed at its recently acquired El Plomo project, and Prismo released assay for 277 samples collected at its Los Pavitos project. In Chihuahua, Kingsmen expanded its land position at its Las Coloradas project in the southeast part of the Parral mining district. In Coahuila, Monumental reported assays results and proposed drill targets from its Jemi rare earth elements project. Minaurum provided an update on its corporate strategy to develop and acquire a pipeline of potential Tier One precious metals projects. ON MINING, GoGold reported Q1, 2023 production results from its Parral Tailings project in Chihuahua. ON FINANCING, Golden Minerals announced that it is selling gold-rich pyrite concentrates from its Velardeña properties on improved terms to a buyer in Manzanillo. ON RESOURCES AND DEVELOPMENT, Heliostar filed a technical report on an update of the 2017 pre feasibility study on the Ana Paula deposit in Guerrero, and announced re-scoping plans for its gold deposit. Avino reported metallurgical results from the testwork program on its oxide tailings project at its Avino property in Durango. Silver Tigre reported drill results from its El Tigre project in Sonora. ON DEALS AND CORPORATE ISSUES, Impact Silver closed the acquisition of the Plomosas mine in Chihuahua. Excellon announced the reversal of a USD $22M liability from its March 31, 2023 consolidated balance sheet (La Negra Mine, Queretaro). Teck and Agnico Eagle completed the San Nicolas project joint venture agreement. Silver Viper re-negotiated terms of the Rubi-Esperanza option agreement. ON SOCIAL RESPONSIBILITY, No relevant news.
ON MEXICO ISSUE
- Silver Tiger Metals Inc., was the only mining company reporting drilling intercepts in Mexico on the first week of April, 2023. Details are shown in the table below:
ON EXPLORATION
- Colibri Resource Corporation reported assay results of sampling completed at its recently acquired El Plomo project in Sonora. Twenty-five grab samples returned values > 1.0 g/t Au, including 6 with values > 5 g/t Au. “A total of 62 grab samples taken by Colibri returned Au assay values > 0.1 g/t Au. Channel sample values range from 8.03 g/t Au to 0.089 g/t Au over sample lengths (true widths) of 1.7m to 0.1 m. The occurrence and general distribution of higher-grade samples (> 1.0 g/t Au) evident in the historical work was validated with the due diligence sampling”.
- Prismo Metals Inc., released assay for 277 samples taken at its Los Pavitos project in Sonora, from which 175 samples collected at the Santa Cruz area returned 0.5 g/t Au or more (several with values above 5 g/t Au over widths of 0.20 to 1m, and the best returned 20.3 g/t Au over 0.6m), and seven samples returned over 100 g/t Ag. Pathfinder elements As and Bi are also generally strongly anomalous. “At least six other target areas have been identified for additional detailed work to develop drilling targets for later this year. Drilling permits are in process and drilling is expected to begin in Q2 2023”.
- Kingsmen Resources Ltd., expanded its land position at its Las Coloradas project in the southeast part of the Parral mining district in Chihuahua, with the acquisition of a new claim. The new 342 hectares claim is adjacent to its Las Coloradas project and covers prospective geology and structural and geophysical targets.
- Monumental Minerals Corp., reported assay results and proposed drill targets from its flagship Jemi rare earth elements project in Coahuila. The company has completed four months of exploration consisting of detailed geological mapping, regional stream sediment sampling, ground radiometric geophysical surveys, and lithogeochemical sampling. “A total of 296 assays have been received for surface rock chip samples from Jemi Dykes and Veladora North. Samples that are both peralkaline and anomalous in REEs, Ta, and Nb (116 samples) define four discreet priority areas within Monumental’s mineral concessions”. “Three-dimensional modeling of airborne magnetic data indicates that a larger intrusive body and potential source for the mineralized dykes may lie at a shallow depth (less than 300 m) beneath the dykes. Based on these results, six preliminary drill targets have been chosen and a drilling program is anticipated to commence in June 2023”.
- Minaurum Gold Inc., provided an update on its corporate strategy to develop and acquire a pipeline of potential Tier One precious metals projects, through a portfolio containing silver projects totaling 37,928 hectares; gold projects totaling 25,933 hectares; and copper projects totaling 12,856 hectares. “Key initiatives for each flagship project include: underground rehabilitation to be followed by mapping, sampling and underground drilling at its Alamos Silver project in Sonora. Results will serve as a basis for an initial resource estimate; at Santa Marta Copper-Gold Project in Oaxaca, an initial drill program has been designed and is awaiting a drill permit from SEMARNAT, the Mexican federal environmental permitting agency; and at Aurifero Gold Project in Sonora, a drill program to test deep targets has been designed and drill permits have been applied for, actively working to further consolidate the district. Minaurum expects to advance the remainder of its projects through strategic joint ventures in exchange for a combination of royalties, carried interests, and payments such as it received in option agreements with Fortuna Silver Corp. and Infinitum Copper Corp”.
ON MINING
- GoGold Resources Inc., reported Q1, 2023 production results from its Parral Tailings project in Chihuahua. The company produced 173.7K Oz Ag, 2,106 Oz Au, and 320.3K Lb Cu (400.1K Oz AgEq).
ON FINANCING
- Golden Minerals Company announced that it is selling gold-rich pyrite concentrates from its Velardeña properties on improved terms to a buyer in Manzanillo. The Company had previously planned to construct a BIOX facility at Velardeña in order to recover the gold in the pyrite concentrate. The Company is now evaluating the economics of a restart of the Velardeña operation without the need for major capital expenditures for the BIOX facility and ancillary equipment. Golden made its first shipment of 142 tonnes of previously produced and stockpiled gold-rich pyrite concentrate under the new terms last week and is currently processing 3,000 tonnes of previously mined and stockpiled mineralized material from the Santa Juana mine for future shipments.
ON RESOURCES AND DEVELOPMENT
- Heliostar Metals Limited filed a technical report on an update of the 2017 pre feasibility study on the Ana Paula deposit in Guerrero, and announced re-scoping plans for its gold deposit. The Ana Paula deposit has a proven and probable mineral reserve of 14.1M tonnes with grades of 2.38 g/t Au and 6 g/t Ag for a total of 1.08M Oz Au and 2.5M Oz Ag contained. Ana Paula deposit is permitted for open-pit mining. The after-tax NPV (5% discount rate) of the Ana Paula Project is estimated assuming long-term metal prices of $1,600/Oz Au and $20/Oz Ag. The after-tax NPV (5%) of the Ana Paula Project is estimated at $278.6M with a projected after-tax IRR of 30.5%. “The Ana Paula re-scoping program has four key areas of technical study: engineering, metallurgical, resource modelling, and geotechnical. These studies are designed to evaluate Ana Paula as a high-grade underground mine with a simplified and de-risked milling flow sheet”.
- Avino Silver & Gold Mines Ltd., reported metallurgical results from the testwork program on its oxide tailings project at its Avino property in Durango. The tailings project hosts gold and silver from past producing historic operations with a 5.7 M tonnes of measured and indicated resource grading 95 g/t of silver equivalent. The project consists of three types of tailings that are categorized by grade as well as identified in three stratigraphic layers within the deposit based on the time period when they were processed. They are, Ancient Oxides, Recent Oxides and Sulphides, and each type was sampled and tested separately. Metallurgical recoveries for the Ancient Oxides are 89.5% for Au and 90.4% for Ag; for the Recent Oxides are 85.8% for Au and 83.4% for Ag; and for the Sulphides are 82.8% for Au and 76.1% for Ag.
- Silver Tigre Metals Inc., reported drill results from its El Tigre project in Sonora. Drilling highlights include hole ET-23-445 collared at the Sulphide Zone with 0.24 g/t Au, 130 g/t Ag, 0.16% Cu, 0.8% Pb, and 2% Zn (247 g/t AgEq) over 3.1im including 0.17 g/t Au, 305 g/t Ag, 0.31% Cu, 1.7% Pb, and 4.8% Zn (547 g/t AgEq) over 0.8m, plus 0.24 g/t Au, 115 g/t Ag, 0.58% Cu, 2% Pb, and 3.9% Zn (365 g/t AgEq) over 9.6m, including 0.59 g/t Au, 442 g/t Ag, 2.14% Cu, 7.6% Pb, and 12% Zn (1,270 g/t AgEq) over 1.6m, including 0.52 g/t Au, 857 g/t Ag, 1.74% Cu, 6.4% Pb, and 14.6% Zn (1,700 g/t AgEq) over 0.5m; and hole ET-23-448 collared at El Tigre Vein area, with 0.03 g/t Au, 485 g/t Ag, 0.33% Cu, 0.01% Pb, and 0.08% Zn (522 g/t AgEq) over 4.9m, including 0.04 g/t Au, 1,194 g/t Ag, 0.84% Cu, 0.03% Pb, and 0.2% Zn (1,285 g/t AgEq) over 1m, including 0.05 g/t Au, 1,560 g/t Ag, 1.14% Cu, 0.04% Pb, and 0.3% Zn (1,684 g/t AgEq) over 0.5m.
ON DEALS AND CORPORATE ISSUES
- Impact Silver Corp., completed the share purchase and sale agreement with Consolidated Zinc Limited to close the acquisition of the Plomosas mine in Chihuahua. Terms of the agreement include a total purchase price of USD $6M consisting of USD $3M in cash and the balance in the form of Impact shares (a total of 11,441,647 shares will be issued), and a 12% net profit interest royalty on production from the Plomosas project to Consolidated. “Contractual restrictions have been applied to 75% of the share transfer component such that IMPACT Shares will be released from restriction in three equal tranches of 25% of the total number of shares issued to CZL, every 6 months, over 18 months from closing. 25% of the IMPACT Shares will be immediately held by CZL (subject to a statutory 4- month hold period from the date of issuance of the IMPACT Shares)”.
- Excellon Resources Inc., announced the reversal of a USD $22M liability from its March 31, 2023 consolidated balance sheet, relating to the previously disclosed judgment against one of the Company’s subsidiaries in Mexico (La Negra Mine, Queretaro).
- Teck Resources Limited and Agnico Eagle Mines Limited completed the joint venture agreement to advance the permitting and development of the San Nicolas project in Zacatecas. Agnico Eagle, through a wholly-owned Mexican subsidiary, has agreed to subscribe for a 50% interest in Minas de San Nicolás, S.A.P.I. de C.V. for USD $580M. The joint venture partners are planning to submit an Environmental Impact Assessment and Permit application for San Nicolás in the first half of 2023 and are targeting completion of a feasibility study in early 2024.
- Silver Viper Minerals Corp., re-negotiated terms of the Rubi-Esperanza option agreement. An addendum of the agreement was signed on April 4, 2023, outlining an overall reduction in this year’s cash payment, and now including the issuance of shares as partial compensation. “The revised agreement provides for the issuance of USD $1.5M in Silver Viper shares issued on signing, followed by a cash payment of USD $200K in June of 2023. In order to complete this agreement, there is a scheduled cash payment of USD $200K, along with the issuance of USD $775K in Silver Viper shares during June of 2024.
ON SOCIAL RESPONSIBILITY
- No relevant news.
Content like what you have just read can be seen at https://gambusinoprospector.com/ and at LinkedIn’s Mexico Mineral Exploration Group.
On the picture above, an onyx vein in a prospect in San Luis Potosi, Mexico. Photo by Miguel A Heredia.
The Mining and Exploration News in Mexico: Highlights on the Fifth Week of March 2023

By Jorge Cirett
During the 13th week of the year (March 27th to April 2nd, 2023), 18 companies working in Mexico released news on their properties. Two companies informed on exploration on their properties, three companies informed on Q4 and year 2022 financial and operational results. Two companies closed partial or complete share placements. Two companies filed technical reports on their properties, two more released drilling results on their advanced properties and two more updated mineral resource estimates for their properties. Two companies announced the completion of the acquisition process on mining projects. ON MEXICO ISSUES, the Mexican president sent an initiative to change the Mining Law that is likely to strongly impact the mineral exploration industry. ON EXPLORATION, In Sonora, Tocvan Ventures provided an update on bulk sampling at its Pilar property; Reyna Gold is to drill its La Gloria project. ON MINING, Mag Silver, Sierra Metals and Avino Silver released Q4 2022 financial reports. ON FINANCING, Silver Spruce closed a private placement for $1.13 M, Golden Tag closed the first tranche of a non-brokered private placement. ON RESOURCES AND DEVELOPMENT, Alamos Gold and Sonoro Gold filed NI-43-101 technical reports on the Mulatos and Cerro Caliche properties respectively, both in Sonora. GoGold Resources released drilling results from Los Ricos South project in Jalisco. Oroco Resource informed on drilling at the Santo Tomás project in Sinaloa. Argonaut Gold updated on mineral resources at five of its properties in Mexico. Aura Minerals reported on mineral reserves and resources at Aranzazu, in Zacatecas. ON DEALS AND CORPORATE ISSUES, Argonaut Gold completed the sale of the Ana Paula project in Guerrero to Heliostar Metals. Sierra Metals completed the acquisition of La Guitarra project, in Estado de Mexico, from First Majestic Silver. ON SOCIAL RESPONSIBILITY, no relevant news.
ON MEXICO ISSUES
- The president of México, Andrés M. López Obrador sent to Congress an initiative to reform the Mining Law, National Water Law, Ecological Equilibrium Law and Environmental Protection and the General Law for Prevention and Integral Management of Residues relating to Mining and Water Concessions. The initiative displays a heavy ideological charge on the exposition of motifs, full of propaganda epithets against the “neoliberal” current state of affairs on these matters. Any good specific proposal within the initiative is overwhelmed by the sheer amount of new rules designed for the State to have a firm grip on the industry, many of which involve granting the government power to decide when to take away a concession on flimsy grounds, raising the uncertainty level for mining investment in Mexico. Some takeaway points that drastically change how the mining industry is operating in Mexico include: The government is to perform auctions for mining concessions (no more staking). Mining activities are no longer considered to have priority over other land uses. No land expropriation on mining grounds. Social impact studies to be conducted before any exploration takes place. Public consultations with “towns”, indigenous (which by the way are auto ascribed) and afro-Mexican communities. Reduction of mining concessions rights from 50 to 15 years, that could be renewed only once (more than a few operations in Mexico have been continuous for far longer periods). Mining concessions are conditioned to water “availability” (yes, the government decides, unconstrained, when there is available water, anytime). No private transmission of mining concessions without government consent (again, absolute power to the government). Added cancellation causes include lack of report in possible harm or risks to ecological equilibrium, lack of permits, concessions or authorizations from other authorities and lack of closing programs or management of residues. The only way to obtain a concession is to be by government auction (Concurso). Limits mining concessions coverage to only one element (you have to wonder on the genius that came with this proposal). The list continues, but in a first pass reading those above come as the most likely to cause an exodus of investment in mining exploration in Mexico. Mines are to continue operating, and advanced properties are likely to continue to development, but the Mexican exploration industry is about to halt when this initiative is approved, as the government has the required number of votes secured in Congress. Dialogue between industry entities and the government should take place before this initiative is voted, because better alternatives should be sought in order to achieve a better operating mining industry. Alternative options agreed upon should both improve the effect of mining operations in communities and the environment while promoting investment, thus helping Mexico’s development as a whole.
ON EXPLORATION
- Tocvan Ventures Corp. provided a progress update on the first bulk sample at the Pilar project in Sonora. Over 1,200 tonnes of material have been stockpiled with the first shipments completed. Four head-grade samples averaged 6.2, 7.6, 1.3 and 7.6 gpt Au. “Diagnostic leach tests are ongoing and were collected from four trench areas and one select drill core coarse reject sample. Preliminary results from the study suggest free gold is present in the samples and has been confirmed visually by testing sieved…. Up to 1,000 tonnes of oxide-gold material will be extracted from select areas….. The information provided from the sample will be used for planning in coordination for permitting of full-scale mine and process facilities on-site at Pilar”.
- Reyna Gold Corp. announced the mobilization to recommence a minimum of 5,500 m of diamond drilling at its 24,215 ha La Gloria property in Sonora. The program is focused on four targets: La Republicana, Western, Las Carmelitas and Main Zone. At La Republicana drilling “will test extensions to the La Republicana Main Vein, which produced 59.00m of 1.45 g/t Gold in Phase 1 drilling”, on the 1 km long vein with significant anomalies delineated by an induced polarization survey. At Western, abundant quartz veining with Au-Te high-grades are to be tested. At Las Carmelitas high Cu, Ag, Sb assays have been obtained in a large conglomerate/agglomerate system. At the Main Zone, follow-up is to test on phase-1 drilling that returned 5.5 m @ 935 gpt Ag; 7.85 m @ 3.94 gpt Au; 30.60 m @ 0.51 gpt Au.
ON MINING
- Mag Silver Corp. announced consolidated financial results for 2022. Commissioning of the Juanicipio plant in Zacatecas commenced in early January 2023, after the entire system was connected to the national power grid in late December 2022. During the year 646.1 K tonnes were processed thorough the Fresnillo and Saucito plants, producing 8.7 M Oz Ag, 20,268 Oz Au, 4,487 tonnes Pb, 6,758 tonnes Zn, netting $132.8 M in gross profit by Juanicipio (56% Fresnillo PLC, 44% Mag Silver). At the end of 2022 Mag Silver had 29.2 M of working capital, with no long-term debt. The company closed a $42.6 M bought deal public offering on February 2023.
- Sierra Metals Inc. presented Q4 and year-end 2022 consolidated financial results. The company has operations in Chihuahua and Peru, but no production details by unit were presented. Sierra Metals obtained $46.2 M in revenue during the year, with an adjusted EBITDA of $13 M, a net loss of $88.3 M. The company had cash and cash equivalents of $5.1 M and negative working capital of $84.4 M. For 2023 the production guidance at Bolivar, in Chihuahua, envisions a production of 34.5 – 39.5 M Lb CuEq at cash cost $2.99 per Lb CuEq and an AISC of $5.07 per Lb CuEq. At Cusi, in Chihuahua, an undisclosed amount of silver ounces was produced at cash cost $16.77 per Oz AgEq and an AISC of $23.17 per Oz AgEq.
- Avino Silver & Gold Mines Ltd. released consolidated financial results for Q4 and year-end 2022. During the year, the Avino mine in Durango milled 541.8 K tonnes to produce 985 K Oz Ag, 5,778 Oz Au, 6.5 M Lb Cu (or 2.65 M Oz AgEq), at cash cost $10.34 per Oz AgEq and an AISC of $17.91 per Oz AgEq. In the year the company had revenue of $44.2 M, ending the period with a $11.2 M cash balance and $8.8 M in working capital.
ON FINANCING
- Silver Spruce Resources Inc. closed a private placement for $1.13 M in proceeds (Diamante, Sonora).
- Golden Tag Resources Ltd. closed the first tranche of the previously announced non-brokered private placement, aiming to raise $5.7 M in aggregate gross proceeds (Don Diego and La Parrilla, Durango).
ON RESOURCES AND DEVELOPMENT
- Alamos Gold Inc. announced the filing of a NI43-101 compliant technical report for its Mulatos property in Sonora.
- Sonoro Gold Corp. reported the filing of a NI-43-101 compliant technical report on the mineral resource estimate at its Cerro Caliche project in Sonora. The report includes indicated resources of 19.9 M tonnes @ 0.44 gpt Au, 3.5 gpt Ag, containing 280 K Oz Au, 2.2 M Oz Ag, and inferred resources of 10.5 M tonnes @ 0.42 gpt Au, 4 gpt Ag, containing 140 K Oz Au, 1.3 M Oz Ag. The resources are amenable to a combination of open pit and heap leach extraction.
- GoGold Resources Inc. announced drilling results from the Eagle and Main deposits at its Los Ricos South project in Jalisco. Highlighted core length intervals comprise 23.3 m @ 7.07 gpt Au, 86 gpt Ag (including 2.7 m @ 45.01 gpt Au, 106 gpt Ag); 39.9 m @ 1.28 gpt Au, 87 gpt Ag; 16.3 m @ 1.09 gpt Au, 28 gpt Ag; 18.2 m @ 1.72 gpt Au, 118 gpt Ag; 13.9 m @ 3.63 gpt Au, 144 gpt Ag. “The purpose of the program is to better define the very high-grade portions of the current deposit that may be amenable to bulk underground mining. The Company is carrying out a trade-off study to better define what portion of the deposit could be mined in a lower strip ratio pit and what portion would best be mined in more selective bulk underground mining”.
- Oroco Resource Corp. released results from drilling at the South Zone of the Santo Tomás project in Sinaloa. Highlighted core length intervals estimated to be within 10% of true width comprise 221.7 m @ 0.023 gpt Au, 2 gpt Ag, 0.37% Cu; 145.0 m @ 0.008 gpt Au, 2 gpt Ag, 0.25% Cu; 89.0 m @ 0.011 gpt Au, 2 gpt Ag, 0.31% Cu (including 25.0 m @ 0.020 gpt Au, 4 gpt Ag, 0.74% Cu); 81.0 m @ 0.011 gpt Au, 1 gpt Ag, 0.20% Cu. “Historical drilling, surface geological mapping, and the Dias Geo 3D Induced Polarization survey have defined near-surface mineralization projected to 400 m below the surface along 2,000 m of strike length in the South Zone”.
- Argonaut Gold Inc. updated its mineral resources to the end of 2022, including figures from its Mexican properties. The following table shows the resources on its Mexican properties, which at the end of 2022 comprised proven and probable reserves of 2.3 M Oz Au, 51.7 M Oz Ag, 86 K tonnes Cu, 5.6 M Oz Au, 94.9 Oz Ag, 187 K tonnes Cu in measures and indicated resources and 603 K Oz Au, 17.1 M Oz Ag, 5 K tonnes Cu in inferred resources.

- Aura Minerals Inc. reported updated mineral reserves and resources for its operating mines, including from its Aranzazu mine in Zacatecas, to the end of 2022. Proven and probable mineral reserves stand at 9.6 M tonnes @ 0.81 gpt Au, 17.61 gpt Ag, 1.23% Cu, containing 249 K Oz Au, 5 M Oz Ag, 259 M Lb Cu. Measured and indicated resources comprise 15.1 M tonnes @ 0.97 gpt Au, 21.15 gpt Ag, 1.44% Cu, containing 471 K Oz Au, 10.4 M Oz Ag, 477.3 M Lb Cu. Inferred resources stood at 4.3 M tonnes @ 0.55 gpt Au, 16.37 gpt Ag, 1.04% Cu, containing 76 K Oz Au, 2.3 M Oz Ag, 99 M Lb Cu.
ON DEALS AND CORPORATE ISSUES
- Argonaut Gold Inc. announced the completion of the sale of the Ana Paula project in Guerrero to Heliostar Metals Ltd. The deal involved US$10 M in cash upon closing and US$20 M in deferred cash and share considerations. The project has 1 M Oz Au @ 2.36 gpt Au in proven and probable mineral reserves, is permitted for an open pit and potential for underground mining, with 142,000 m of drilling in 333 holes.
- Sierra Madre Gold and Silver Ltd. announced the completion of the acquisition of the La Guitarra property in Estado de Mexico. Sierra Madre issued to First Majestic Silver Corp. 69 M shares for it to maintain a 19.9% interest on Sierra Madre, shares that are to be released by an escrow on four equal installments between September 2023 and March 2025. The company opened a brokered private placement on September 2022, intending to raise up to $10 M. The common shares are halted from trading, and are expected to resume trading following the closing of the common share offering.
ON SOCIAL RESPONSIBILITY
- Avino Silver & Gold Mines received for the first time in 2022 the ESR (Empresa socialmente responsible) award “granted by the Mexican Center for Philanthropy (El Centro Mexicano para la Filantropia or Cemefi, and the Alliance for Corporate Social Responsibility (Alianza por la Responsabilidad Social Empresarial or (AliaRSE))”.
On the image below: Porphyritic felsic dike on a project in the Sonoran Desert. Picture by Jorge Cirett.

The Mining and Exploration News in Mexico: Highlights on the Fourth Week of March, 2023.

Garnetite (grossular garnet skarn)
By Miguel A Heredia
During the 12th week of the year (March 20th to March 26th, 2023), at least 17 press releases were announced by companies working in Mexico, and 1 news published by the media with eight reporting resources and developments of their properties, five disclosing deals and corporate issues, two communicating production and financial results, one commenting on Mexican Issues, one informing on exploration results, and one discussing social issues. ON MEXICO ISSUES, Torex, Vizsla, and Discovery Silver reported the best drilling intercepts in Mexico on the fourth week of March, 2023. ON EXPLORATION, In Zacatecas, Radius announced the discovery and acquisition of a new gold property within the Fresnillo mining district. ON MINING, Golden Minerals announced full year 2022 production and financial results. Impact reported full year 2022 production and financial results from its Zacualpan mining district in the State of Mexico. ON FINANCING, no relevant news. ON RESOURCES AND DEVELOPMENT, Golden Minerals presented results of an initial Mineral Resource Estimate prepared for its Yoquivo project in Chihuahua. Vizsla announced results from seven holes drilled at its flagship Panuco project in Sinaloa. Fortuna Silver reported updated Mineral Reserve and Mineral Resource Estimates for its San Jose Mine in Oaxaca. Discovery Silver announced results from the Feasibility Study (FS) drill holes on its flagship Cordero property in Chihuahua. Torex reported encouraging results from the 2022 drilling program at EPO deposit within its Media Luna property in Guerrero. GR Silver announced significant updated Mineral Resource Estimate for its Plomosas project in Sinaloa. Southern Silver updated the Mineral Resource Estimate on its Cerro Las Minitas project in Durango. ON DEALS AND CORPORATE ISSUES, Capitan Mining announced name change to Capitan Silver Corp. (Cruz de Plata project, Durango). Radius entered into an option agreement to acquire 100% of the 200 hectares Tropico property within the Fresnillo mining district in Zacatecas. Heliostar announced that it returned to trading on the TSX Venture exchange (Ana Paula, Guerrero). Sierra Madre announced that it received approval for the acquisition of the La Guitarra property in the State of Mexico. Pan American and Yamana provided an update on the status of Pan American´s proposed acquisition of all the issued and outstanding common shares of Yamana. ON SOCIAL RESPONSIBILITY, Industrias Peñoles and Fresnillo plc, implemented a responsible water management policy in order to reduce their footprint water.
ON MEXICO ISSUE
- Torex Gold Resources Inc., Vizsla Silver Corp., and Discovery Silver Corp., reported the best drilling intercepts in Mexico on the fourth week of March, 2023. Details are shown in the table below:

ON EXPLORATION
- Radius Gold Inc., announced the discovery and acquisition of a new gold property within the Fresnillo mining district in Zacatecas. El Tropico project is located 30km NW of Fresnillo city and consists of hot spring type sinter and breccia pipe. Radius identified an elliptical zone of intensely silicified hydrothermal breccias approximately 450m by 250m in a flat zone and hosted in finely bedded siltstone and dirty limestone interpreted to be part of the Proaño Group which host the major Fresnillo deposit. Twenty eight rock chip samples were collected on the property with encouraging results. Au assays ranged from 0.02 g/t to 0.88 g/t, with an average of 0.28 g/t; Hg values are very high with many samples exceeding >100 ppm (the upper limit of detection); Sb values are very anomalous and ranged from 64 ppm to 1,135 ppm; As values ranged from 8 ppm to 854 ppm; and Ag values ranged from 0.6 g/t to 5.6 g/t.
ON MINING
- Golden Minerals Company announced full year 2022 production and financial results from its Rodeo project in Durango. It produced 11,982 Oz Au and 32,179 Oz Ag at average realized sales prices of USD $1,805 and USDS $21.93 per Oz respectively. Total cash costs were USD $1,362 per payable Oz Au. Golden reported revenue of USD $23.3M; net operating margin of USD $5.7M; cash and equivalents balance as of December 31, 2022 of USD $4M; exploration expenses of USD $9.6M; and a net loss of USD 9.9M.
- Impact Silver Corp., reported full year 2022 production and financial results from its Zacualpan mining district in the State of Mexico. The company processed 152,862 tonnes at a direct production cost of USD $97.49 per ton, to produce 633K Oz Ag. Impact sold 644.8K Oz Ag, and reported revenues of USD $16.3M; mine operating earnings before amortization and depletion of USD $1.2M; cash flow loss of USD $1.8M; balance sheet of USD $15.3M in cash and working capital of USD $16.4M. The company has not long-term debt.
ON FINANCING
- No relevant news.
ON RESOURCES AND DEVELOPMENT
- Golden Minerals Company filed a NI 43-101 Technical Report for its Yoquivo project in Chihuahua in which presented results of an initial Mineral Resource Estimate (MRE). The Yoquivo MRE include inferred resources for 937K tonnes with average grades of 410 g/t Ag and 2.1 g/t Au (570 g/t AgEq) for a total of 12.3M Oz Ag and 64K Oz Au (17.23M Oz AgEq) contained. The resource was not initially classified beyond Inferred. The company believes that a significant portion will be updated to Measured & Indicated in the next resource update.
- Vizsla Silver Corp., announced results from seven holes drilled at its flagship Panuco project in Sinaloa. Drilling highlights (true widths reported) from the La Luisa Vein located 700m west of the Napoleon Vein include hole NP-22-332 with 2,699 g/t Ag, 24.99 g/t Au, 0.2% Pb, and 0.6% Zn (4,227 g/t AgEq) over 2.30m, including 11,502 g/t Ag, 120.5 g/t Au, 0.8% Pb, and 2.6% Zn (18,950 g/t AgEq) over 0.47m; hole NP-22-358 with 257 g/t Ag, 11.13 g/t Au, 0.4% Pb, and 2% Zn (1,076 g/t AgEq) over 5.6m, including 659 g/t Ag, 44.22 g/t Au, 0.5% Pb, and 2.3% Zn (3,698 g/t AgEq) over 1.1m, including 221 g/t Ag, 22.68 g/t Au, 0.3% Pb, and 0.5% Zn (1,761 g/t AgEq) over 0.27m, plus 174 g/t Ag, 0.77 g/t Au, 0.4% Pb, and 0.5% Zn (243 g/t AgEq) over 1.16m, plus 226 g/t Ag, 1.45 g/t Au, 1.2% Pb, and 8% Zn (633 g/t AgEq) over 1.27m; and hole NP-22-345 with 1,286 g/t Ag, 9.76 g/t Au, 0.9% Pb, and 2.3% Zn (1,967 g/t AgEq) over 2.5m, including 2,982 g/t Ag, 24.01 g/t Au, 1.8% Pb, and 5% Zn (4,630 g/t AgEq) over 0.99m, plus 42 g/t Ag, 1.55 g/t Au, 0.5% Pb, and 2.1% Zn (237 g/t AgEq) over 1.48m, plus 42 g/t Ag, 4.05 g/t Au, 0.2% Pb, and 2.9% Zn (426 g/t AgEq) over 2.53 m, plus 65 g/t Ag, 2.21 g/t Au, 0.1% Pb, and 2.6% Zn (306 g/t AgEq) over 1.70m. These results expand the high-grade footprint at La Luisa by over approximately 150m down dip from previously reported drill holes.
- Fortuna Silver Mines Inc., reported updated Mineral Reserve and Mineral Resource Estimates as of December 31, 2022 for its San Jose Mine in Oaxaca. The company estimated Proven + Probable Reserves of 2.14M tonnes with grades of 172 g/t Ag and 1.16 g/t Au for a total of 11.8M Oz Ag and 80K Oz Au contained. It also reported Measured and Indicated Mineral Resources of 911K tonnes with grades of 109 g/t Ag and 0.72 g/t Au for a total of 3.2M Oz Ag and 21K Oz Au contained, and Inferred Resources of 2.52M tonnes with grades of 118 g/t Ag and 0.83 g/t Au for a total of 9.6M Oz Ag and 67K Oz Au contained. (Mineral Resources are exclusive of Mineral Reserves).
- Discovery Silver Corp., announced results from the Feasibility Study (FS) drill holes on its flagship Cordero property in Chihuahua. Drilling highlights include hole C22-677 located 185m within the resource pit in the South Corridor with 77 g/t Ag, 0.16 g/t Au, 0.7% Pb, and 1.3% Zn (158 g/t AgEq) over 31.7m, plus 124 g/t Ag, 0.09 g/t Au, 1.2% Pb, and 1.9% Zn (241 g/t AgEq) over 38.5m; hole C22-687, toward the bottom and beneath the reserves pit in an area previously modeled as waste with 14 g/t Ag, 0.09 g/t Au, 0.2% Pb, and 1.3% Zn (75 g/t AgEq) over 50.3m, plus 35 g/t Ag, 0.06 g/t Au, 0.7% Pb, and 1.7% Zn (126 g/t AgEq) over 35.5m, plus 25 g/t Ag, 0.06 g/t Au, 0.6% Pb, and 2.2% Zn (133 g/t AgEq) over 27.4m; and hole C22-671 located approximately 1.5km northeast of the reserves pit with 137 g/t Ag, 0.05 g/t Au, 3.1% Pb, and 3.5% Zn (370 g/t AgEq) over 14.8m, plus 55 g/t Ag, 0.04 g/t Au, 0.9% Pb, and 1.5% Zn (141 g/t AgEq) over 23.1m. The FS drilling consisted of 30 drill holes and was focused on two key areas: 1) expansion of reserves within and beneath the Pre-Feasibility Study open pit and 2) upgrading and expansion of the resource in the far northeast of the deposit. The drilling results will be incorporated in a FS in conjunction with a resource update planned for the first half of 2024.
- Torex Gold Resources Inc., reported encouraging results from the 2022 drilling program at EPO deposit within its Media Luna property in Guerrero. Drilling highlights include hole ML22-900D with 12.25 g/t Au, 72 g/t Ag, and 3.59% Cu (18.90 g/t AuEq) over 32.87m; hole ML22-924D with 5.32 g/t Au, 150 g/t Ag, and 5.77% Cu (16.38 g/t AuEq) over 17.23m, including 99.52 g/t Au, 91 g/t Ag, and 4.42% Cu (107.73 g/t AuEq) over 4.28m; hole ML22-886D with 4.93 g/t Au, 76 g/t Ag, and 3.11% Cu (10.83 g/t AuEq) over 35.05m; hole ML22-927 with 9.11 g/t Au, 11 g/t Ag, and 0.31% Cu (9.75 g/t AuEq) over 17.35m, plus 5.99 g/t Au, 21 g/t Ag, and 0.67% Cu (7.31 g/t AuEq) over 42.02m; hole ML22-926D with 1.35 g/t Au, 81 g/t Ag, and 3.86% Cu (8.54 g/t AuEq) over 32.1m; hole ML22-925D with 1.19 g/t Au, 46 g/t Ag, and 2.12% Cu (5.16 g/t AuEq) over 28.46m, plus 8.51 g/t Au, 137 g/t Ag, and 5.78% Cu (19.44 g/t AuEq) over 5.09m; hole ML22-909A with 1.71 g/t Au, 70 g/t Ag, and 2.88% Cu (7.17 g/t AuEq) over 14.78m, plus 2.1 g/t Au, 58 g/t Ag, and 2.82% Cu (7.33 g/t AuEq) over 18.34m; hole ML22-919D with 6.82 g/t Au, 35 g/t Ag, and 1.46% Cu (9.58 g/t AuEq) over 6.05m, plus 8.04 g/t Au, 11 g/t Ag, and 0.78% Cu (9.43 g/t AuEq) over 8.47m; hole ML22-815D with 8.58 g/t Au, 8 g/t Ag, and 0.41% Cu (9.33 g/t AuEq) over 14.71m; hole ML22-912D with 4.23 g/t Au, 8.21 g/t Ag, and 0.08% Cu (4.45 g/t AuEq) over 18.77m; and hole ML22-920A with 12.47 g/t Au, 16 g/t Ag, and 0.19% Cu (12.96 g/t AuEq) over 4.31m. The company informed that the drilling results were very encouraging and is expected to achieve the target of upgrading half of the current inferred resources to the indicated category. Torex is optimistic about the potential to further increase the size of EPO as the deposit remains open to the north, south, and west.
- GR Silver Mining Ltd., announced significant updated Mineral Resource Estimate for its Plomosas project in Sinaloa. The company reported that there was an increase of 108% in Indicated Resources from 46M Oz AgEq to 97M Oz AgEq; 72% increase in Indicated Resources from 32M Oz Ag to 55M Oz Ag; 61% increase in Inferred Resources from 33M Oz AgEq to 53M Oz AgEq; 20% increase in Inferred Resources from 18M Oz Ag to 22M Oz Ag; 44% increase in average Indicated Mineral Resource grade from 143 g/t Ag to 206 g/t AgEq; and 65% increase in average Inferred Mineral Resource grade from 112 g/t Ag to 115 g/t Ag. At San Marcial, there was an increase of 80% in Indicated Mineral Resources from 36M Oz AgEq to 65M Oz AgEq; and a 65% increase in Inferred Mineral Resources from 12M Oz AgEq to 20M Oz AgEq. GR Silver reported Indicated Mineral Resources of 9.7M tonnes at 209 g/t AgEq (148 g/t Ag), and Inferred Mineral Resources of 3M tonnes at 200 g/t AgEq (145 g/t Ag). 71% of the value of the San Marcial Resource Estimate is comprised of Ag, and 91% of the 65M Oz AgEq San Marcial Indicated Resources are potentially amenable to open pit extraction. At Plomosas, there was an increase of 137% in the Indicated Mineral Resource tonnage; 260% increase in the Indicated Mineral Resource from 9M Oz AgEq to31M Oz AgEq; Ag and AgEq grade increased by 30% and 52% respectively; 20% of the total Indicated Mineral Resource is comprised of Ag, and 26% of the total Inferred Mineral Resource is comprised of Ag. It means that 46% of the Resource Estimate at Plomosas mine area is comprised of precious metals.
- Southern Silver Exploration Corp., updated the Mineral Resource Estimate (MRE) on its Cerro Las Minitas project in Durango. The updated MRE significantly expanded sulphide resources in the La Bocona deposit. The newly modelled mineral resources represent an approximate 63% increase in the size of the La Bocona deposit (on an AgEq basis) and an overall 4.5% increase in the mineral resources of the entire project. The company reported Indicated Mineral Resources of 12.5M tonnes at grades of 106 g/t Ag, 0.07 g/t Au, 0.2% Cu, 1.3% Pb, and 3.3% Zn (349 g/t AgEq or 8.5% ZnEq) to contain 42.7M Oz Ag, 29K Oz Au, 46M Lb Cu, 364M Lb Pb, and 903M Lb Zn (140M Oz AgEq or 2,300M Lb ZnEq), and Inferred Mineral Resources of 21M tonnes at grades of 118 g/t Ag, 0.1 g/t Au, 0.2% Cu, 1.2% Pb, and 2.2% Zn (311 g/t AgEq or 7.6% ZnEq) to contain 80M Oz Ag, 85K Oz Au, 101M Lb Cu, 571M Lb Pb, and 1,029M Lb Zn to contain 210M Oz AgEq or 3,500M Lb ZnEq. “The new MRE incorporates results from 26 additional drill holes totalling 11,801.5m which tested the north-western extension the La Bocona deposit. Mineralization was also identified in several holes specifically along the northern margin of the central intrusion that were not incorporated into the new resource update and with further drilling, represent additional expansion opportunities”.
ON DEALS AND CORPORATE ISSUES
- Capitan Mining Inc., announced name change to Capitan Silver Corp. Capitan Silver will continue to trade under the same symbol ‘CAPT’ on the TSX Venture Exchange and the number of shares outstanding will not change (Cruz de Plata project, Durango).
- Radius Gold Inc., entered into an option agreement to acquire 100% of the 200 hectares Tropico property within the Fresnillo mining district in Zacatecas. Terms of the option include a payment on signing of USD $200K (completed); a further USD $200K payment which can be paid in 6 monthly installments over a period of 42 months, starting with USD $25K at month 12 from signing in order to maintain the property option. At month 48, Radius can acquire 100% of the property for USD $5M. An additional milestone payment of USD $5M is conditional on delivering a compliant feasibility study or at the start of mine construction. A further USD $3M to be paid if reserves exceed 2M Oz AuEq (Au + Ag ounces). If Radius does not complete payment of the milestone USD $5M within 8 years of signing, the property would return 100% to original owners.
- Heliostar Metals Limited announced that it returned to trading on the TSX Venture exchange. “The Company can now submit the required documentation to return to trade on the OTCQX and will provide an update once the timeline is clear” (Ana Paula, Guerrero).
- Sierra Madre Gold and Silver Ltd., announced that it received approval from the Federal Economic Competition Commission (COFECE), the Mexico´s antitrust agency for the acquisition of the La Guitarra property in the State of Mexico. With the receipt of this approval, closing of the acquisition is expected to take place on March 30,2023, followed by trade resumption of Sierra Madre shares shortly thereafter.
- Pan American Silver Corp., and Yamana Gold Inc., provided an update on the status of Pan American´s proposed acquisition of all the issued and outstanding common shares of Yamana. Both companies informed that the Mexican Federal Economic Competition Commission approved the Pan American arrangement with Yamana and Agnico Eagle Mines Limited. All required regulatory, shareholders and court approvals, including the finall court order, have now been received and the arrangement is anticipated to be completed on or about March 31, 2023.
ON SOCIAL RESPONSIBILITY
- Industriales Peñoles S.A.B. de C.V. and Fresnillo plc, implemented a responsible water management policy in order to reduce their footprint water. Both companies have proposed three guiding principles: resource efficiency, collaboration with other actors and transparency. Thus, Industrias Peñoles and Fresnillo plc reiterated their commitment to respect the human right to access to safe drinking water.
Content like what you have just read can be seen at https://gambusinoprospector.com/ and at LinkedIn’s Mexico Mineral Exploration Group.
On the picture above, a garnetite (grossular garnet skarn) in a prospect in Tamaulipas, Mexico. Photo by Miguel A Heredia.
The Mining and Exploration News in Mexico: Highlights on the Second Week of March, 2023.
Quartz-Sericite-Pyrite (Phyllic Alteration).
By Miguel A Heredia
During the 10th week of the year (March 6th to March 12nd, 2023), at least 9 press releases were announced by companies working in Mexico, and 4 news published by the media with five commenting on Mexican Issues, three informing on exploration results, two reporting resources and developments, two disclosing deals and corporate issues, and one discussing social issues. ON MEXICO ISSUES, Peñoles and Fresnillo plc recognized the role of women in mining, commemorating his legacy from the beginning of his participation in this sector. In Mexico, women in mining have access to salaries up to 30% higher than the national average. According to figures from the Mexican Social Security Institute (IMSS), more than 66,000 women work in the mining-metallurgical industry, which is equivalent to 16.3% of the total workforce. Proposals to modify the Mining Law lack support, say experts, since the industry complies with at least 4,000 legal obligations, before starting operations of a mining unit. GoGold and Torex reported the best drilling intercepts in Mexico on the second week of March, 2023. ON EXPLORATION, In Sonora, Aztec Minerals reported that it has commenced the 2023 exploration program at its Cervantes project. In Sinaloa, Prismo announced that it has received authorization for drilling its Palos Verdes project. In Oaxaca, Vortex Metals provided an update on the environmental works it has conducted at its flagship Riqueza Marina project. ON MINING, no relevant news. ON FINANCING, no relevant news. ON RESOURCES AND DEVELOPMENT, GoGold reported additional drilling results from Los Ricos South, within the Eagle and Main Deposits in Jalisco. Torex released results from the drilling program conducted at its Media Luna project in Guerrero. ON DEALS AND CORPORATE ISSUES, Guanajuato Silver announced that a new shareholder has acquired a significant equity position in the company (El Cubo, Valenciana, and San Ignacio Mines in Guanajuato). Bear Creek provided an update on the USD $25M payment to Equinox Gold for the Mercedes mine in Sonora. ON SOCIAL RESPONSIBILITY, Endeavour published its inaugural climate strategic report (Guanacevi mine, Durango).
ON MEXICO ISSUE
- Servicios Industriales Peñoles S.A.B. de C.V., and Fresnillo plc recognized the role of women in mining, commemorating his legacy from the beginning of his participation in this sector. Both companies have maintained a strong gender agenda that offers equal opportunities to women and men, equal salaries that depend on the responsibilities of each employee, programs to prevent harassment and to reinforce female leadership.
- In Mexico, women in mining have access to salaries up to 30% higher than the national average, with remunerations that exceed MXP $11K a month, above the MXP $5K and up to MXP $7K received by workers in the agricultural and construction sectors, textile employees, drivers and merchants, according to sector estimates. The mining industry has made progress on issues of diversity and inclusion, since in the last 13 years the participation of women has increased, going from 33,260 at the end of 2008 to 66,037 by 2022, according to data from Mining Chamber of Mexico (CAMIMEX).
- According to figures from the Mexican Social Security Institute (IMSS), more than 66,000 women work in the mining-metallurgical industry, which is equivalent to 16.3% of the total workforce. The number of women who are entering careers in mining engineering, metallurgy and geology is increasing and therefore their presence in the productive field and in the management of the operation of mining units is increasing. Of the total number of women who participate in the industry, 10% hold directive positions and 14% hold management positions.
- Proposals to modify the Mining Law lack support, say experts, since the industry complies with at least 4,000 legal obligations, before starting operations of a mining unit. The reform initiatives to the Mining Law that have been presented in the Congress of the Union lack support in the real circumstances of this industry or refer to issues that should be the subject of other legal regulations, as uncertainty for this activity. The experts explained that issues such as creating or increasing taxes and/or rights must be ruled out in the legislative drafts, since mining entrepreneurs pay, like any other taxpayer, the Income Tax, the Special Tax on Production and Services, in addition to they also pay mining rights and some local contributions, such as payroll and property taxes, as well as some of the so-called ecological taxes. They added that it is estimated that the tax burden of mining in Mexico is high, compared to other countries with mining activity. Mining is an industry misunderstood and unknown by many, even by those who promote changes to its legislation, for which they trusted that the voice of those who know and participate directly in the industry will be heard.
- GoGold Resources Inc., and Torex Gold Resources Inc., reported the best drilling intercepts in Mexico on the second week of March, 2023. Details are shown in the table below:
ON EXPLORATION
- Aztec Minerals Corp., reported that it has commenced the 2023 exploration program at its Cervantes project in Sonora. The plan of the company is to conduct a surface exploration program which will consist of road cut, reconnaissance outcrop, and soil sampling, Terraspec SWIR data collection, and geological mapping. It will comprise collecting over 1,300 geochemical samples, including 950 roads cut, 120 soils, and 250 outcrop chips.
- Prismo Metals Inc., announced that it has received authorization for drilling its Palos Verdes project, located in the historic Panuco-Copala mining district in Sinaloa. The company plan is to complete a 2,500m drilling program to test the strike length of the Palos Verdes Vein that was not previously accessible until now.
- Vortex Metals Inc., provided an update on the environmental works it has conducted at its flagship Riqueza Marina project in Oaxaca. Vortex has completed the environmental work activities and has interpreted and organized the information according to predetermined formats required for the Secretariat of Environment and Natural Resources (SEMARNAT). Additionally, the company is working closely with the community looking that a beneficial relationship is established and the general assembly confirms and seals the agreements.
ON MINING
- No relevant news.
ON FINANCING
- No relevant news.
ON RESOURCES AND DEVELOPMENT
- GoGold Resources Inc., reported additional drilling results from Los Ricos South, within the Eagle and Main Deposits in Jalisco. Drilling highlights include hole LRGAG-22-117 on Eagle Deposit with 1.09 g/t Au and 133 g/t Ag (2.87 g/t AuEq or 215 g/t AgEq) over25m, including 1.96 g/t Au and 307 g/t Ag (6.06 g/t AuEq or 454 g/t AgEq) over 9m, including 8.08 g/t Au and 1,460 g/t Ag (27.75 g/t AuEq or 2,066 g/t AgEq) over 1m; hole LR-GAG-22-125 on Eagle Deposit with 2.14 g/t Au and 128 g/t Ag (3.84 g/t AuEq or 288 g/t AgEq) over 42.3m, including 9.66 g/t Au and 486 g/t Ag (16.13 g/t AuEq or 1,210 g/t AgEq) over 7.3m; including 15.35 g/t Au and 866 g/t Ag (26.89 g/t AuEq or 2,017 g/t AgEq) over 2.8m; and hole LRGG-22-232 on Main Deposit with 2.60 g/t Au and 61 g/t Ag (3.41 g/t AuEq or 256 g/t AgEq) over 10.2m, including 24.60 g/t Au and 238 g/t Ag (27.77 g/t AuEq or 2,083 g/t AgEq) over 0.8m. The Eagle Deposit adjoins the Main Deposit and represents a northern extension of the previously defined Mineral Resource Estimate in the Los Ricos South PEA.
- Torex Gold Resources Inc., released results from the drilling program conducted at its Media Luna project in Guerrero. This program was focused on upgrading Indicated Resources to the Measured category and targeting spatial gaps in prior drilling to expand Inferred Mineral Resources. Drilling highlights include hole ML22-823D with 40.48 g/t Au, 87 g/t Ag, and 2.76% Cu (46.05 g/t AuEq) over 28.40m; hole ML22-804D with 10.79 g/t Au, 101 g/t Ag, and 3.09% Cu (17.08 g/t AuEq) over 58.08m; hole ML22-768D with 13.98 g/t Au, 112 g/t Ag, and 3.69% Cu (21.39 g/t AuEq) over 26.39m; hole ML22-762A with 13.27 g/t Au, 17 g/t Ag, and 0.46% Cu (14.23 g/t AuEQ9 over 22.43m; hole ML22-835D with 6.72 g/t Au, 29 g/t Ag, and 0.92% Cu (8.58 g/t AuEq) over 34.75m; hole ML22-767D with 4.57 g/t Au, 80 g/t Ag, and 2.50% Cu (9.63 g/t AuEq) over 26.15m; hole ML22-913 with 4.75 g/t Au, 29 g/t Ag, and 1.76% Cu (8 g/t AuEq) over 25.43 g/t AuEq over 25.43m; hole ML22-910 with 1.06 g/t Au, 54 g/t Ag, and 1.25% Cu (3.78 g/t AuEq) over 48.05m; hole ML22-877A with 1.53 g/t Au, 25 g/t Ag, and 0.73% Cu (3.03 g/t AuEq) over 26.77m; and hole ML22-915 with 1.94 g/t Au, 6 g/t Ag, and 0.34% Cu (2.56 g/t AuEq) over 18.05m.
ON DEALS AND CORPORATE ISSUES
- Guanajuato Silver Company Ltd., announced that a leading US based institutional investor has acquired a significant equity position in the company through the purchase of 24M common shares representing the majority of the equity position previously held by Great Panther Mining Ltd. (El Cubo, Valenciana, and San Ignacio Mines in Guanajuato).
- Bear Creek Mining Corporation provided an update on the USD $25M payment to Equinox Gold Corp., for the Mercedes mine in Sonora. Bear Creek has revised the terms of the heads of agreement with Equinox to amortize over a two-year period payment of the final USD $25M purchase price installment. “The Revised Terms provide for converting the Deferred Payment into a secured interest bearing promissory note (the “Note”). The Note bears a nominal rate of interest equal to 12.5% per annum plus the greater of (i) 90-day average Secured Overnight Financing Rate and (ii) 2.50% per annum, and matures after a term of two years on October 21, 2024 (the “Maturity Date”). Commencing March 3, 2023, the Note will amortize at a fixed rate of USD $700K per month during the first year until March 3, 2024 and thereafter at an amount per month equal to the greater of (i) USD $700K and (ii) 50% of the free cash flow generated from Mercedes”. In addition to the Note, the Company will issue to Equinox Gold 2,750,000 common shares of the Company.
ON SOCIAL RESPONSIBILITY
- Endeavour Silver Corp., published its inaugural climate strategic report in which provided specific information in four areas: governance, strategy, risk management, and metrics and targets (Guanacevi mine, Durango).
Content like what you have just read can be seen at https://gambusinoprospector.com/ and at LinkedIn’s Mexico Mineral Exploration Group.
On the picture above, quartz-sericite-pyrite (phyllic alteration) in a porphyry copper project in Sonora, Mexico. Photo by Miguel A Heredia.
The Mining and Exploration News in Mexico: Highlights on the Fourth Week of February, 2023.
By Miguel A Heredia
During the 8th week of the year (February 20th to February 26th, 2023), at least 23 press releases were announced by companies working in Mexico, with ten reporting resources and developments of their properties, six communicating production and financial results, two informing on exploration results, two commenting on Mexican issues, one disclosing deals and corporate issues, one announcing financing issues, and one discussing social issues. ON MEXICO ISSUES, Almaden regretted the decision of Mexico´s Ministry of Economy to deny the two mineral title applications which were first made by Almaden in 2002 and 2008, and which in turn led to the grant of mineral titles in 2003 and 2009, respectively. GoGold, Bear Creek, GR Silver, and Guanajuato Silver reported the best drilling intercepts in Mexico on the fourth week of February, 2023. ON EXPLORATION, In Sonora, Tocvan released results from surface channel sampling of selected area for a bulk sample at its Pilar project. In Coahuila, Monumental Minerals provided an update and defined drill targets at its Jemi Heavy Earth Rare Element project. ON MINING, Coeur reported Q4 and full year 2022 production and financial results from its Palmarejo mine in Chihuahua. Starcore announced Q3, 2023 production results from its San Martin mine in Queretaro. Equinox provided 2023 guidance for its Los Filos mine in Guerrero. Bear Creek announced 2023 production guidance for its Mercedes mine in Mexico. Gatos Silver released 2023 production and cost guidance for its Cerro Los Gatos mine in Chihuahua. First Majestic reported Q4 and full year 2022 production and financial results from their Mexican mine operations. ON FINANCING, Silver Tiger closed its previously announced bought deal offering for gross proceeds of approximately CAD $18M (El Tigre project, Sonora). ON RESOURCES AND DEVELOPMENT, GoGold reported additional drilling results from Los Ricos South, within the Eagle and Main Deposits in Jalisco. Guanajuato Silver announced drill results from its San Ignacio mine in Guanajuato. Alamos Gold reported Mineral Reserves and Resources for the year-ended 2022 at its Mulatos project, Sonora. Bear Creek released results of recent drilling from its Marianas and Rey de Oro deposits at its Mercedes mine in Sonora. Chesapeake announced updated Minera Resource Estimate for its world class Metates deposit in Durango. Minera Alamos informed the commencement of drilling at its Santana project in Sonora. GR Silver reported underground drilling results from 35 holes drilled as part of the 2022 infill and exploratory drilling program conducted at its Plomosas project in Sinaloa. Silver Dollar identified five new mineralized target areas at its la Joya project in Durango. Regency Silver announced that two follow-up holes down-dip were completed at its Dios Padre project in Sonora. Vizsla provided a year-end 2022 summary of its activities carried out at its flagship Panuco project in Sinaloa. ON DEALS AND CORPORATE ISSUES, Minera Alamos granted stock options to its management team, Board of Directors, and certain consultants (Santana project, Sonora). ON SOCIAL RESPONSIBILITY, Almaden signed a cooperation agreement with the Ejido Santa Maria Zotoltepec, the ejido located closest to its Ixtaca project in Puebla.
ON MEXICO ISSUE
- Almaden Minerals Ltd., regretted the decision of Mexico´s Ministry of Economy to deny the two mineral title applications which were first made by Almaden in 2002 and 2008, and which in turn led to the grant of mineral titles in 2003 and 2009, respectively. These mineral titles underpin the Ixtaca deposit which was discovered by Almaden in 2010. As previously reported, these mineral titles were reduced to application status as a result of an early 2022 decision of Mexico’s Supreme Court of Justice (SCJN). Almaden believes that this action by the Secretariat of Economy is inconsistent with the Mexican Mining Law, the SCJN decision, and international law. The Company expects to submit arguments challenging the Secretariat of Economy’s submissions to the District Court within the next few days.
- GoGold Resources Inc., Bear Creek Mining Corporation, GR Silver Mining Ltd, and Guanajuato Silver Company Ltd reported the best drilling intercepts in Mexico on the fourth week of February, 2023. Details are shown in the table below:
ON EXPLORATION
- Tocvan Ventures Corp., released results from surface channel sampling of selected area from an up to 1,000 tonnes of oxide-gold bulk sample at its Pilar project in Sonora. Channel sampling was completed every 5m perpendicular to exposed mineralization and alteration at surface along the Main Zone and 4-T trends. Eight locations were sampled to test varying levels of exposed mineralization, all eight trench locations returned anomalous gold and silver values. Highlights include TR-2023-001 where seven samples over a 35m trend returned an average grade of 2.2 g/t Au and 14 g/t Ag, ranging from 8.3 g/t Au to 0.1 g/t Au; TR-2023-002 where five samples over a 20m trend returned an average grade of 2.8 g/t Au and 9 g/t Ag, ranging from 7.1 g/t Au to 0.7 g/t Au; and TR-23-007 where five samples along a 25m trend returned an average grade of 2.2 g/t Au and 30 g/t Ag ranging from 7.3 g/t Au to 0.1 g/t Au. “Bulk Sample material will be extracted and prepared for processing by heap-leach method at a private mining operation less than 25km to the west of Pilar”.
- Monumental Minerals Corp., provided an update and defined drill targets at its Jemi heavy earth rare element project, located in Coahuila State. The exploration program carried out by the exploration team of the company consisted of detailed mapping and rock sampling, regional stream sediment sampling, ground radiometric geophysical surveys, and lithogeochemical sampling. The exploration effort has been focused on the Jemi dikes and Veladora Norte areas, which host peralkaline intrusion related REE mineralization. “Of the 188 samples with assay results, over one third (76 samples) returned values greater than 0.15% total rare earth oxide (TREO), including 5 samples that returned values greater than 1.0% TREO to a maximum value of 2.4% TREO. The average TREO for all samples is 0.21%, and a minimum value of 9 parts per million (ppm), which was returned in an iron-oxide/calcite vein”. This rock sampling has defined a series of high priority drill targets.
ON MINING
- Coeur Mining Inc., reported Q4 and full year 2022 production and financial results from its Palmarejo mine in Chihuahua. On Q4, 2022 the company milled 554,247 tonnes of 1.59 g/t Au and 98 g/t Ag with metallurgical recoveries of 92.4% and 85% respectively to produce approximately 26K Oz Au and 1.49M Oz Ag. It sold 25.2K Oz Au and 1.49M Oz Ag at an average realized price of USD $1,519 per Oz Au and USD $21.10 per Oz Ag. Coeur reported metal sales of USD $69.5.4M; cost applicable to sales (CAS) of USD $47.1M; adjusted CAS per Oz Au of USD $1,027 and adjusted CAS per Oz Ag of USD $14.23; exploration expense of USD $1.5M; cash flow from operating activities of USD $18.9M; total capital expenditures of USD $8.1M; and free cash flow of USD $10.8M. On the full year 2022, Coeur milled approximately 2.2M tonnes of 1.65 g/t Au and 113 g/t Ag with metallurgical recoveries of 92.1% and 84.2% respectively to produce approximately 106.8K Oz Au and 6.71M Oz Ag. It sold 107.1K Oz Au and 6.7M Oz Ag at an average realized price of USD $1,471 per Oz Au and USD $21.78 per Oz Ag. Coeur reported metal sales of USD $303.4M; cost applicable to sales (CAS) of USD $1822.6M; adjusted CAS per Oz Au of USD $883 and adjusted CAS per Oz Ag of USD $13.05; exploration expense of USD $6.6M; cash flow from operating activities of USD $88.4M; total capital expenditures of USD $42.6M; and free cash flow of USD $45.8M.
- Starcore International Mines Ltd., announced Q3, 2023 production results from its san martin mine in Queretaro. The company milled 58,562 tonnes of 1.29 g/t Au and 9 g/t Ag with metallurgical recoveries of 85.24% and 48.95% respectively to produce 2,182 Oz AuEq.
- Equinox Gold Corp., provided 2023 guidance for its Los Filos mine in Guerrero. The company expects to produce between 160K-180K Oz Au at cash and all includes sustaining cost of USD $1,460-USD $1,620 and USD $1,680-USD $1,865 per Oz Au produced respectively; and a sustaining cost of USD $40M.
- Bear Creek Mining Corporation announced 2023 production guidance for its Mercedes mine in Mexico. The company expects to produce 65K-75K Oz Au and 210K-243K Oz Ag during 2023 at an average cash cost per Oz Au in the range of $830-$890 , and all in sustaining cost of $1,120-$1,290 per Oz Au.
- Gatos Silver Inc., released 2023 production and cost guidance for its Cerro Los Gatos mine in Chihuahua. The company expects to produce between 7.4-8.2M Oz Ag, 57-63M Lb Zn in Zn concentrates, 36-40M Lb Pb in Pb concentrates, and 5.4-6.2K Oz Au in Pb concentrates (or 12.4-13.8M Oz AgEq). All in sustaining cost for silver production and silver equivalent production has been estimated in USD $11-13 and USD $15.50-17.50 per Oz payable respectively. Gatos Silver also estimated sustaining capital expenditures at USD $45M; and exploration and definition drilling expenditures at USD $13M, including drilling of the south-east deep zone and district exploration.
- First Majestic Silver Corp., reported Q4 and full year 2022 production and financial results from their Mexican mine operations. The tables below show figures by mine for the period Q4 and full year 2022:
ON FINANCING
- Silver Tiger Metals Inc., closed its previously announced bought deal offering of 58.1M of common shares at a price of CADS $0.31 per share for gross proceeds of approximately CAD $18M. Gross proceeds will be used to continue advancement of its El Tigre mine in Sonora, and for general corporate purposes.
ON RESOURCES AND DEVELOPMENT
- GoGold Resources Inc., reported additional drilling results from Los Ricos South, within the Eagle and Main Deposits in Jalisco. Drilling highlights include hole LRGAG-22-110 on the Eagle Deposits with 1.43 g/t Au and 43 g/t Ag (2 g/t AuEq or 150 g/t AgEq) over 62.4m, including 4.57 g/t Au and 71 g/t Ag (5.52 g/t AuEq or 414 g/t AgEq) over 16m, including 17.05 g/t Au and 189 g/t Ag (19.57 g/t AuEq or 1,468 g/t AgEq) over 1.4m; hole LRGAG-22-113 on the Eagle Deposit with 3.29 g/t Au and 358 g/t Ag (8.06 g/t AuEq or 605 g/t AgEq), including 20.05 g/t Au and 2,000 g/t Ag (46.72 g/t AuEq or 3,504 g/t AgEq) over 1.8m, including 40 g/t Au and 3,490 g/t Ag (86.53 g/t AuEq or 6,490 g/t AgEq) over 0.8m, plus 2.32 g/t Au and 58 g/t Ag (3.09 g/t AuEq or 232 g/t AgEq) over 29.5m, including 5.20 g/t Au and 72 g/t Ag (6.16 g/t AuEq or 462 g/t AgEq) over 12.3m, including 21.10 g/t Au and 170 g/t Ag (23.37 g/t AuEq or 1,752 g/t AgEq) over 1m; hole LRGAG-22-115 on the Eagle Deposit with 1.44 g/t Au and 75 g/t Ag (2.45 g/t AuEq or 183 g/t AgEq) over 31.5m, including 3.38 g/t Au and 147 g/t Ag (5.34 g/t AuEq or 400 g/t AgEq) over 11m, including 12.85 g/t Au and 64 g/t Ag (13.70 g/t AuEq or 1,028 g/t AgEq) over 1; and hole LRGAG-22-227 on the Main Deposit with 1.28 g/t Au and 105 g/t Ag (2.68 g/t AuEq or 201 g/t AgEq) over 29m, including 4.84 g/t Au and 352 g/t Ag (9.54 g/t AuEq or 715 g/t AgEq) over 6.3m, including 24 g/t Au and 335 g/t Ag (28.47 g/t AuEq or 2,135 g/t AgEq) over 0.7m. The Eagle Deposit adjoins the Main Deposit and represents a northern extension of the previously defined Mineral Resource Estimate in the Los Ricos South PEA.
- Guanajuato Silver Company Ltd., announced drill results from its San Ignacio mine in Guanajuato. Drilling highlights include hole UGSI22-005, the best drill hole the company has drilled at any of its mines acquired from Great Panther, with 5.11 g/t Au and 810 g/t Ag (1,219 g/t AgEq) over a true width (TW) of 4.92m, including 25.84 g/t Au and 4,914 g/t Ag (6,981 g/t AgEq) over a TW of 0.42m, including 28.23 g/t Au and 1,693 g/t Ag (3,951 g/t AgEq) over a TW of 0.42m. This significant drill result on the Melladito vein will be followed up with additional drill holes attempting to follow the down dip extension of the vein within the Company’s 2023 drill campaign. In addition, the company is in the midst of driving a 400m access ramp from Melladito to the analogous Purisima vein, which offers the potential for expanded production at San Ignacio mine. Guanajuato Silver also confirmed that it will provide an updated mineral resource estimate which is expected to be completed by Q3, 2023.
- Alamos Gold Inc., reported Mineral Reserves and Resources for the year-ended 2022 at its Mulatos project, Sonora. The company reported Proven + Probable Mineral Reserves of 26,734,000 tons with an average grade of 1.95 g/t Au for a total of 1,679,000 Oz Au contained. Alamos Gold also announced Measured + Indicated Mineral Resources (exclusive of Mineral Reserves) for 10,302,000 tonnes of 2.52 g/t Au for a total of 502K Oz Au contained, and Inferred Resources for 1,774,000 tonnes of 1.27 g/t Au for a total of 72K Oz Au contained. In addition, the company has budgeted a total of USD $17M for exploration in 2023. This budget comprises 16,000m of surface exploration drilling at Puerto del Aire, Gap Victor, and Estrella Zones, and 34,000m for regional exploration on high priority targets, including Halcon, Halcon West, Carricito, Bajios, and Jaspe.
- Bear Creek Mining Corporation released results of recent underground drilling from its Marianas and Rey de Oro deposits at its Mercedes mine in Sonora. Drilling highlights (reported in true widths) include hole UG-MR22-105 collared on Marianas Deposit with 5.68 g/t Au and 6 g/t Ag over 2.8m, plus 12.43 g/t Au and 12 g/t Ag over 2.8m; hole UG- MR22-106 on Mariana Deposit with 41 g/t Au and 24 g/t Ag over 0.8m; hole UG-MAR22-113 on Mariana Deposit with 8.47 g/t Au and 32 g/t Ag over 3m, plus 5.02 g/t Au and 7 g/t Ag over 3m; hole UG-RDO23-075 collared on Rey de Oro Deposit with 10.23 g/t Au and 182 g/t Ag over 3.5m; hole UG-RDO22-077 on Rey de Oro Deposit with 15.35 g/t Au and 109 g/t Ag over 1.03m; and hole M22-934D on GAP Deposit with 6.47 g/t Au and 58 g/t Ag over 2.2m. “The Marianas and GAP drilling represent step-outs from the existing underground mining operations along the main Mercedes vein zone. The Rey de Oro drilling represents extensions downdip and along strike of the existing reserves and underground operations”.
- Chesapeake Gold Corp., announced updated Minera Resource Estimate (MRE) for its world class Metates deposit in Durango. The updated MRE incorporates an additional 23 holes drilled by Chesapeake and has an effective date of January 28, 2023. It include Measured + Indicated Resources for 921.2M tonnes with average grades of 0.57 g/t Au and 14 g/t Ag for a total of 16.77M Oz Au and 423.2M Oz Ag contained, and Inferred Resources for 139.5M tonnes with average grades of 0.47 g/t Au and 13 g/t Ag for a total of 2.13M Oz Au and 59 M Oz Ag contained. “This updated MRE together with on-going metallurgical work will form the basis of a new Pre-Feasibility Study”.
- Minera Alamos Inc., informed the commencement of drilling at its Santana project in Sonora. The company plans to drill a number of gold bearing breccia pipes in the cluster that comprise the Santana project. Some of these priority targets such as Zata and Benjamin Hill have never been drilled before. Over 10,000m of drilling in up to 80 holes have been planned by the company`s exploration team to drill-test the targets.
- GR Silver Mining Ltd., reported underground drilling results from 35 holes drilled as part of the 2022 infill and exploratory drilling program conducted at its Plomosas project in Sinaloa. Drilling highlights ( reported in true widths) include hole PLIP22-30 with 69 g/t Ag, 2.67 g/t Au, 0.1% Pb, 0.2% Zn, and 0.2% Cu (353 g/t AgEq) over 14.1m, including 227 g/t Ag, 5.39 g/t Au, 0.3% Pb, 0.6% Zn, and 0.4% Cu (808 g/t AgEq) over 1.6m, including 219 g/t Ag, 40.18 g/t Au, 0.3% Pb, and 1% Cu (4,075 g/t AgEq) over 0.6m; hole PLIP22-52 with 2 g/t Ag and 1.91 g/t Au (182 g/t AgEq) over 8.1m, including 33 g/t Ag and 64.5 g/t Au (6,033 g/t AgEq) over 0.2M; hole PLIP22-29 with 55 g/t Ag, 1.01 g/t Au, 3.1% Pb, 4.8% Zn, and 0.2% Cu (441 g/t AgEq) over 21.7m, including 299 g/t Ag, 5.42 g/t Au, 1.8% Pb, 9.7% Zn, and 0.6% Cu (1,291 g/t AgEq) over 2.8m; hole PLIP22-35 with 20 g/t Ag, 1.8 g/t Au, 0.5% Pb, 1.5% Zn, and 0.3% Cu (221 g/t AgEq) over 14.2m, including 44 g/t Ag, 1.1 g/t Au, 10.4% Pb, 15.3% Pb, and 0.3% Cu (1,059 g/t AgEq) over 0.2m, including 46 g/t Ag, 6.09 g/t Au, 2.7% Pb, 8.4% Pb, and 0.8% Cu (1,105 g/t AgEq) over 0.8m; and hole PLIP22-42 with 30 g/t Ag, 0.76 g/t Au, 7.9% Pb, 7.9% Zn, and 0.3% Cu (669 g/t AgEq) over 8.3m, including 49 g/t Ag, 0.41 g/t Au, 7.8% Pb, 10.9% Zn, and 1.1% Cu (846 g/t AgEq) over 0.9m, including 50 g/t Ag, 1.97 g/t Au, 19.7 g/t Pb, 15.6% Zn, and 0.3% Cu (1,422 g/t AgEq) over 2.7m.
- Silver Dollar Resources Inc., identified five new mineralized target areas at its la Joya project in Durango. These areas are located in the unexplored portion of the property and were outlined during the last exploration campaign which consisted of geological mapping and sampling. The Verde and Hueco Areas were partially drilled by a previous operator, while Dyke North, Dyke South, and South-East Areas never have been drill tested before.
- Regency Silver Corp., announced that two follow-up holes down-dip from REG-22-01 were completed at its Dios Padre project in Sonora. Hole REG-22-01 intersected 6.84 g/t Au, 22 g/t Ag, and 0.88% Cu over 35.8m, including 13.97 g/t Au, 50 g/t Ag, and 1.11% Cu over 9.8m. Hole REG-23-14 encountered 32m of pyrite-specularite-chalcopyrite supported breccia from approximately 454-486m within a broader zone of disseminated and vein hosted mineralization approximately 25m down dip from REG-22-01, while hole REG-23-15 intersected 120m of specularite-pyrite-chalcopyrite supported breccia from approximately 400-520m within a broader zone of disseminated and vein hosted mineralization approximately 85m down-dip from REG-22-01 and about 62m down-dip from REG-23-14.
- Vizsla Silver Corp., provided a year-end 2022 summary of its activities carried out at its flagship Panuco project in Sinaloa, and outlined the goals for 2023. During Q1, 2022 the company announced its initial mineral resource estimate (MRE) centered on the western portion of the Panuco district. In 2022, Vizsla completed over 121,000m of additional drilling to conclude in an updated MRE on January 2023, with a significant increase in gold and silver as well as in the overall grade. The company also discovered other near-surface, high-grade structures, demonstrating the growth potential outboard of the known resource boundaries. “For 2023, our focus is on incremental expansion and de-risking of the current resource base. With a fully funded +90,000m drill program utilizing seven drill rigs, we plan to update the current Panuco resource estimate in the second half of 2023, which will be followed in due course by an initial Preliminary Economic Assessment”.
ON DEALS AND CORPORATE ISSUES
- Minera Alamos Inc., granted stock options to its management team, Board of Directors, and certain consultants. The Board of Directors approved the issuance of a total of 2.25M options at an exercise price of $0.51, and 6.9M at an exercise price of $0.45. All the options will expire in 5 years and vest 50% on the first anniversary of their grant and 50% on the second anniversary (Santana project, Sonora).
ON SOCIAL RESPONSIBILITY
- Almaden Minerals Ltd., signed a cooperation agreement with the Ejido Santa Maria Zotoltepec, the ejido located closest to its Ixtaca project in Puebla, to support an agro-technological package aimed at sustainable plan nutrition and soil enrichment.
Content like what you have just read can be seen at https://gambusinoprospector.com/ and at LinkedIn’s Mexico Mineral Exploration Group.
On the picture above, an outcrop of a flow banded rhyolite in a low-sulphidation epithermal veins prospect in Sonora Mexico. Photo by Miguel A Heredia.












