Mexico State
Impact Silver Announces Closing of an Oversubscribed C$7.1 Million First Tranche Non-Brokered Private Placement Financing
The Mining and Exploration News in Mexico: Highlights on the First Week of May, 2024

Quartz stockwork veining in andesites
By Miguel A Heredia
During the 18th week of the year (April 29th to May 5th, 2024), at least 27 press releases were announced by companies working in Mexico, and 2 news published by the media with eight communicating production and financial results, seven announcing financing rounds, six reporting resources and development of their properties, five disclosing deals and corporate issues, and three commenting on Mexican issues. ON MEXICO ISSUES, At least 670 workers at the Velardeña mine, owned by the company Peñoles, located in the municipality of Cuencamé, Durango, closed the facilities of the mining complex to demand payment of profits. Mining companies such as Grupo Mexico, Torex Gold, and Cuzcatlán (Fortuna Silver) lose up to 15% of their profits due to the “Mexican superpeso”. Silver Tiger reported the best drilling intercepts in Mexico on the first week of May, 2024. ON EXPLORATION, no relevant news. ON MINING, Gold Resource announced it will reschedule release of its Q1, 2024 financial results (Don David, Oaxaca). Americas Gold and Silver provided Q1 2024 production results from its Cosala mine, Sinaloa. Luca Mining reported Q4 and full year 2023 production and financial results from their Campo Morado mine in Guerrero and Tahuehueto mine in Durango. Avino announced that it plans to release its Q1, 2024 financial results on Wednesday, May 8, 2024 (Avino mine, Durango). Coeur reported Q1, 2024 production results from its Palmarejo mine in Chihuahua. Bear Creek announced 2023 year end production and financial results from its Mercedes mine in Sonora. Capstone reported Q1 2024 production results from its Cozamin mine in Zacatecas. Santacruz announced full year 2023 production results from its Zimapan mine in Hidalgo. ON FINANCING, Fortuna Silver has renewed its share repurchase program, allowing for the repurchase of up to five percent of its outstanding common shares (San Jose mine, Oaxaca). Guanajuato Silver gave notice of an upsizing of its previously announced brokered private placement for an additional CAD $2,250,000 (El Cubo, Valenciana, and San Ignacio mines, Guanajuato). Impact Silver announced a non-brokered private placement for gross proceeds of up to $3,200,000 (Plomosas mine, Chihuahua). Infinitum Copper has amended the terms of its previously announced private placement and now it plans to rise gross proceeds of up to CAD $450,000 (La Adelita project, Sonora). Minaurum closed its previously announced private placement for gross proceeds of CAD $5,696,250 (Alamos Silver project, Sonora). Guanajuato Silver announced that it has filed an amended and restated offering document related to its previously announced brokered financing (El Cubo, Valenciana, and San Ignacio mines, Guanajuato). Infinitum Copper closed the first tranche of its previously announced private placement for gross proceeds of $1,452,600, and upsized its previously announced non-brokered listed issuer financing exemption (LIFE) private placement for gross proceeds of up to $1,700,000. ON RESOURCES AND DEVELOPMENT, Luca Mining has successfully completed metallurgical test work for a new copper concentrate at its Campo Morado mine in Guerrero. Minera Alamos provided operational update on their Santana and Cerro de Oro properties located in Sonora and Zacatecas respectively, as well as the acquisition of Suaqui Verde project in Sonora. Torex Gold provided a Q1, 2024 update on its Media Luna property in Guerrero. Silver Tiger provided an update on the ongoing pre-feasibility study drilling program on the Stockwork gold deposit on its El Tigre project in Sonora. Minera Alamos provided an update on Cobre 4H and copper assets. Xali Gold provided an update on the company´s activities in Mexico. ON DEALS AND CORPORATE ISSUES, Prismo announced the appointment of its new President (Palos Verdes project, Sinaloa). Americas Gold and Silver announced the appointment of its new Chief Operating Officer (Cosala mine, Sinaloa). GR Silver has enhanced its financial position by signing a definitive agreement to sell Marlin Gold to WP Servicios Industriales S.A. de C.V. (Plomosas project, Sinaloa). Royalties Inc., announced advances on two of its major investments in Mexico (Bilbao project, Zacatecas). Sonoran Desert received a Management Cease Trade Order (MCTO) due to a delay in filing required financial documents for the year ended December 31, 2023. ON SOCIAL RESPONSIBILITY, no relevant news.
ON MEXICO ISSUE
- At least 670 workers at the Velardeña mine, owned by the company Peñoles, located in the municipality of Cuencamé, Durango, closed the facilities of the mining complex to demand payment of profits, this after last April the company reported that there will be no profits because the mine It was declared zero last year. Workers accused the local leaders of the “Frente” Mining Union and the national Carlos Pavón Campos of being at the service of Peñoles, since, they say, this is the third time that the company represented by Alejandro Baillères does not make the corresponding payment of the profits. The claim of the 670 workers of the Velardeña mine is added to the demands of the United States government to Industrias Peñoles to review the working conditions in one of its mines. This request responds to a request from the National Union of Mining, Metallurgical, Steel and Steel Workers. Similar ones from the Mexican Republic, headed by senator Napoleón Gómez Urrutia of the Morena political party, who points out the alleged denial of the rights of free association and collective bargaining in one of the group’s mines. The Velardeña mine began operations in May 2013 and is currently the most important Zinc mine of Industrias Peñoles and the second largest nationally, which places Durango as one of the three main zinc-producing states in Mexico.
- Mining companies lose up to 15% of their profits due to the “Mexican superpeso”. The results of Grupo México, Torex Gold and Cuzcatlán were weak due to the appreciation of the Mexican currency. As the Mexican peso gains ground against the dollar, mining companies such as Grupo México, Torex Gold or Cuzcatlán face a complex environment because mineral export contracts are handled in US currency, which caused profit margins to be impacted by up to a 15 percent.
- Silver Tiger Metals Inc., reported the best drilling intercepts in Mexico on the first week of May, 2024. Details are shown in the table below:
ON EXPLORATION
- No relevant news.
ON MINING
- Gold Resource Corporation announced it will reschedule release of its Q1, 2024 financial results. The preliminary results announced on April 15, 2024, remain unchanged. The conference call will be hosted on Friday, May 3, 2024, at 12:00 p.m. Eastern Time (10:00 a.m. Mountain Time) (Don David, Oaxaca).
- Americas Gold and Silver Corporation provided Q1 2024 production results from its Cosala mine, Sinaloa. The company produced approximately 295K Oz Ag, 2.8M Lb Pb, and 8M Lb Zn. Based on the current higher silver and copper price, the company decided to expedite the development of its 100% owned EC120 project at the Cosala operation. Initial access to the Zone 120 deposit occurred in Q3-2023 from the San Rafael Upper Zone development. In addition, the company continues mining and processing silver-zinc ore from the San Rafael Main and Upper Zones and is pleased with the increase in zinc prices so far in the second quarter”.
- Luca Mining Corp., reported Q4 and full year 2023 production and financial results from their Campo Morado mine in Guerrero and Tahuehueto mine in Durango. In Q4, 2023, Luca processed in the two plants about 130,120 tonnes of 1.4 g/t Au, 76 g/t Ag, 2.5% Zn, 0.64% Cu, and 0.7% Pb with metallurgical recoveries of 53.8%, 49.2%, 84.1%, 80.2%, and 62.6% respectively to produce 3,155 Oz Au, 155.8K Oz Ag, 6.1M Lb Pb, 1.5M Lb Cu, and 1.25M Lb Zn (11,809 Oz AuEq). Campo Morado accounted for 8,658 Oz AuEq, which represents 73% of the total production and Tahuehueto contributed 3,150 Oz AuEq, representing 27% of the total production. Cash cost and All Includes Sustaining Cost (AISC) were USD $1,244 and USD $1,437 per Oz AuEq respectively. In the full year 2023, the company processed in the two plants about 665,132 tonnes of 1.29 g/t Au, 75 g/t Ag, 2.8% Zn, 0.59% Cu, and 0.7% Pb with metallurgical recoveries of 33.2%, 46.3%, 80.4%, 66.6%, and 54.3% respectively to produce 11,832 Oz Au, 688.1K Oz Ag, 34.1M Lb Pb, 5.86M Lb Cu, and 6.02 Lb Pb (55,719 Oz AuEq). Campo Morado accounted for 43,089 Oz AuEq, which represents 73% of the total production and Tahuehueto contributed 12,630 Oz AuEq, representing 27% of the total production. Cash cost and AISC were USD $1,219 and USD $1,405 per Oz AuEq respectively. The company sold 9,951 Oz Au, 495.5K Oz Ag, 24.98 M Lb Zn, 3.8M Lb Cu, and 1.8M Lb Pb at average realized prices of USD $1,958/ Oz Au, USD $23.37/Oz Ag, USD $2,514/tonne Zn, USD $8,394/tonne Cu, and USD $2,093/tonne Pb. The company reported revenues of $68.27M; mine operating profit of $1.47M; mine operating cashflow before taxes of $5.5M; net loss of $15M; EBITDA of $ (6.4M), and adjusted EBITDA of $(5.67M).
- Avino Silver & Gold Mines Ltd., announced that it plans to release its Q1, 2024 financial results on Wednesday, May 8, 2024 (Avino mine, Durango).
- Coeur Mining Inc., reported Q1, 2024 production results from its Palmarejo mine in Chihuahua. The company milled 500,747 tonnes of 1.28 g/t Au and 135 g/t Ag, with metallurgical recoveries of 95.2% and 83.7% respectively to produce 33,160 Oz Au and 1.82M Oz Ag. Coeur sold 33,462 Oz Au and 1.8M Oz Ag at average realized prices of USD $1,611 per Oz Au and USD $23.64 per Oz Ag. The company also reported (all currency expressed in US dollars) metal sales for $96.4M; cost applicable to sales for $54.3M; adjusted cost applicable to sales (CAS) of $901 per Oz Au; adjusted CAS of $13.18 per Oz Ag; exploration expenses for $2.5M; cash flow from operating activities for $25.6M; sustaining capital expenditures (excludes capital lease payments) for $4.7M; development capital expenditures for $68M; and free cash flow of $18.8M. The company announced that the full year 2024 production is expected to be 95K-103K Oz Au and 5.9-6.7M Oz Ag; the CAS is expected to be $1,075-1275 per Oz Au and $16.5-17.5 per Oz Ag; and the capital expenditures are expected to be $32-42M consisting primarily of sustaining capital and underground development.
- Bear Creek Mining Corporation announced 2023 year end production and financial results from its Mercedes mine in Sonora. The company mined 496.7K tonnes of 2.93 g/t Au and processed 521.8K tonnes of 2.77 g/t Au with a metallurgical recovery of 94.92% to produce 43,860 Oz Au and 167K Oz Ag. It sold 44,403 Oz Au at a realized average price of USD $1,960 per Oz Au. Cash and all in sustaining costs (AISC) were USD $1,376 and USD $1,769 per Oz Au sold respectively. Bear Creek also reported revenue of USD $89.15M; comprehensive earnings (loss) after taxes of USD ($38.98M); cash generated from (used in) operating activities of USD ($1.46M); cash generated from (used in) investing activities of USD ($16.4M); and generated from (used in) financing activities of USD $18.34M.
- Capstone Copper Corp., reported Q1 2024 production results from its Cozamin mine in Zacatecas. The company produced 13.45M Lb Cu at cash cost of USD $1.93 per Lb Cu produced.
- Santacruz Silver Mining Ltd., announced full year 2023 production results from its Zimapan mine in Hidalgo. The company milled 769,303 tonnes of 75 g/t Ag, 2.3% Zn, 0.8% Pb, and 0.32% Cu to produce 1.36M Oz Ag, 30.05M Lb Zn, 10.56M Lb Pb, and 2.81M Lb Cu (4.31M Oz AgEq).
ON FINANCING
- Fortuna Silver Mines Inc., has been allowed by the Toronto Stock Exchange, the New York Stock Exchange and/or alternative Canadian trading systems to renew its share repurchase program, allowing for the repurchase of up to five percent of its outstanding common shares. The company believes that its shares may not adequately reflect their underlying value in the market. Pursuant to the normal course issuer bid, Fortuna is permitted to repurchase up to 15,287,201 common shares, being five percent of its outstanding 305,744,039 common shares as of April 26, 2024. Common shares purchased under the NCIB will be cancelled. The program will run until May 1, 2025, or until the maximum allowable shares are acquired, based on various factors including financial performance and available cash flow. Purchases will be made through open market transactions and in compliance with applicable securities laws (San Jose mine, Oaxaca).
- Guanajuato Silver Company Ltd., gave notice of an upsizing of its previously announced brokered private placement for an additional CAD $2,250,000. The aggregate gross proceeds to the company will now be up to CAD $10,875,000 under the combined Listed Issuer Financing Exemption (“LIFE”) and Private Placement. Net proceeds will be used to add to the company’s underground fleet and ramp up production at Guanajuato Silver’s producing mines in Guanajuato and Durango; fund certain improvements to expand and modernize the processing facilities at the Topia mine, Durango and mill complex including capital expenditures and related costs; fund corporate head office general and administrative expenses including legal, audit, overhead and salaries for the ensuing 12 months; and carry out detailed exploration at Guanajuato Silver’s mineral properties, particularly San Ignacio and Valenciana.
- Impact Silver Corp., announced a non-brokered private placement for gross proceeds of up to $3,200,000 from the sale of up to 11,428,572 units (the “LIFE Units”) at a price of $0.28 per LIFE Unit, and up to $3,000,000 from the sale of up to 11,111,111 standard private placement units (the “Standard PP Units”) at $0.27 per Standard PP Unit. The company intends to use the proceeds from the Offering to accelerate exploration activity at its Plomosas high-grade zinc-lead-silver property located in Chihuahua, Mexico, further develop its prolific silver assets at its legacy Royal Mines of Zacualpan district, as well as invest in operational improvements to improve productivity and throughput as the price of silver nears 52-week highs.
- Infinitum Copper Corp., has amended the terms of its previously announced private placement and now it plans to rise gross proceeds of up to CAD $450,000 from the sale of up to 11,250,000 units of the company at a price of CAD $0.04 per unit. Gross proceeds of the offering will be used for the establishment of mining operations at the La Adelita project in Sonora and for general corporate purposes.
- Minaurum Gold Inc., closed its previously announced private placement for gross proceeds of CAD $5,696,250 from the sale of 22,785,000 units at a price of CAD $0.25 per unit. Each unit consists of one common share of the company and one half of one common share purchase warrant. Each warrant shall entitle the holder to purchase one common share of the company at a price of CAD $0.34 at any time on or before May 2, 2024. Net proceeds will be used to complete a National Instrument 43-101 resource at Alamos Silver project in Sonora.
- Guanajuato Silver Company Ltd., announced that it has filed an amended and restated offering document related to its previously announced brokered financing for gross proceeds of up to CAD $10,875,000. The offering is anticipated to close on or about the week of May 6, 2024, or such later date as the company and the agents may determine (El Cubo, Valenciana, and San Ignacio mines, Guanajuato).
- Infinitum Copper Corp., closed the first tranche of its previously announced private placement for gross proceeds of $1,452,600, and upsized its previously announced non-brokered listed issuer financing exemption (LIFE) private placement for gross proceeds of up to $1,700,000. The upsized offering is for up to 10,625,000 units of the company at a price of $0.16 per unit.
ON RESOURCES AND DEVELOPMENT
- Luca Mining Corporation has successfully completed metallurgical test work for a new copper concentrate at its Campo Morado mine in Guerrero, resulting in the production of higher value copper, zinc, and lead concentrates. Ongoing improvements at Campo Morado have led to increased copper recovery and higher concentrate grades. Open circuit, bulk rougher results returned copper recovery of between 80 and 93%. Testing indicates that copper grades as high as 28% Cu are achievable compared to current grades of 15-18%Cu in the bulk concentrate. The company’s operations are poised for advancement following the successful test work.
- Minera Alamos Inc., provided operational update on their Santana and Cerro de Oro properties located in Sonora and Zacatecas respectively, as well on the acquisition of Suaqui Verde property in Sonora. The company discussed operational updates at the Santana project, Sonora, including plans to optimize leach pad capacity for increased gold production. While production was reduced, site preparation works including the conclusion of pre-stripping activities in advance of a transition to the Nicho Main deposit. An updated development plan for the project which was completed late in 2023 has now been initiated and includes increased mining and stacking of approximately 25K Oz Au over a 12-month period that will commence in May 2024. Additionally, it mentioned that the engineering work continues to progress in the Cerro de Oro project, Zacatecas to advance pre-development activities to coincide with the ultimate receipt of permits and a construction decision for the project. Included in 2024 will be further metallurgical optimization studies, detailed engineering design and additional exploration drilling aimed at filling in and potentially expanding the areas of know mineralization. The acquisition of the Suaqui Verde copper project in Sonora is noted as a significant development, allowing for internal engineering studies towards establishing a regional copper production “hub” by the combination of Los Verdes, Potreritos and Suaqui Verde properties, in the area where the company maintains a significant presence.
- Torex Gold Resources Inc., Torex Gold provided a Q1, 2024 update on its Media Luna property in Guerrero. The company has made significant progress in procurement, with 78% completion, and underground development, with 94% of bolts placed for the Guajes conveyor. The project’s execution plan remains on track, with no changes to overall end dates. Electrical deliverables are a focus, with efforts to expedite purchase orders. The project is expected to achieve first copper concentrate production by year end and commercial production in early 2025, leading to positive cash flow by mid-next year. During Q1 2024 (currency expressed in US dollars), $126.4M was invested in the project. Expenditures are expected to remain above $100M through Q3 of this year, before declining in Q4 as the project nears completion. As at quarter end, $830.6M of expenditures had been committed (95%), including $617.4M incurred (71%). There has been no change to full-year guidance of $350 to $400M on project capital expenditures.
- Silver Tiger Metals Inc., provided an update on the ongoing pre-feasibility study drilling program on the Stockwork gold deposit on its El Tigre project in Sonora. The company has completed 23,500m of a 25,000m drilling program focused on expanding the Mineral Resource, up-grading the classification, completing metallurgical testwork and geotechnical studies as it progresses from an exploration to a development project. Drilling highlights include holes ET-23-541 with 0.52 g/t Au and 17 g/t Ag (0.75 g/t AuEq or 56 g/t AgEq) over 79.5m, including 1.08 g/t Au and 8 g/t Ag (1.19 g/t AuEq and 89 g/t AgEq) over 26.5m, plus 0.14 g/t Au and 27 g/t Ag (0.5 g/t AuEq or 38 g/t AgEq) over 10.2m; hole ET-23-543 with 0.84 g/t Au and 28 g/t Ag (1.21 g/t AuEq or 91 g/t AgEq) over 40.2m, including 1.22 g/t Au and 38 g/t Ag (1.72 g/t AuEq or 129 g/t AgEq) over 23m; hole ET-23-548 with 0.62 g/t Au and 4 g/t Ag (0.67 g/t AuEq or 51 g/t AgEq) over 71m, including 1.32 g/t Au and 2 g/t Ag (1.36 g/t AuEq or 102 g/t AgEq) over 18.5m, plus 0.68 g/t Au and 1 g/t Ag (0.69 g/t AuEq or 52 g/t AgEq) over 11.3m; and hole ET-23-550 with 0.53 g/t Au and 10 g/t Ag (0.67 g/t AuEq or 50 g/t AgEq over 21m. plus 0.9 g/t Au and 8 g/t Ag (0.94 g/t AuEq or 70 g/t AgEq9 over 81.1m.
- Minera Alamos Inc., provided an update on its Cobre 4H Mexican subsidiary and copper assets, including the Los Verdes and Potreritos projects. The company aims to develop an independent copper entity in southern Sonora. The Los Verdes project’s PEA report highlights key economic figures and the potential impact of tungsten recovery. It has mineable resources of 7M tonnes of 0.67% Cu, 0.13% Mo, 0.07% W, and 5 g/t Ag, and reported a pre-tax net cash flow of $163M; a net present value (5%) of $113M; an internal rate of return of $34%; a mine life of 7 years; and a payback of 2.7 years. The acquisition of the Potreritos project area is discussed, with historic estimates and the possibility of incorporating its resources into the Los Verdes mining plans. Historic estimates for the Potreritos deposit include 1.4 M tonnes of indicated resources with grades of 0.47% Cu and 0.12% Mo; and 0.8 M tonnes of inferred resources with grades of 0.22% Cu and 0.033% Mo.
- Xali Gold Corp., provided an update on the company´s activities in Mexico. At El Oro tailings project in Mexico State, Xali announced excellent potential for 75% recovery of the gold and silver using a new process being introduced by Kappes, Cassiday and Associates (KCA). “This process would allow the gold and silver to be produced in the form of Dore, which enhances the value of the royalty stream agreed with Xali Gold. Overall recoveries will need further testing to establish a better estimate for overall recoveries of gold and silver, but KCA is very optimistic about the process”. Additionally, Grupo Minero WIYA is modifying the SDA Plant in Nayarit in order to produce a single bulk concentrate production, and has commenced shipping mineralized material from their mine to the SDA Plant. Approximately 550 tonnes of mineralized rock has been received at the SDA Plant in preparation for the restart of the mill, once 1500 tonnes has been delivered. At El Oro Gold hard rock project, Xali Gold is in discussions with a local mining group to extract and process mineralized backfill from the historic San Rafael mine in Mexico State. The agreement would involve sharing profits from recovering gold and silver materials, while also providing underground access for drilling to explore new mineralized zones. Drilling from underground is more cost-effective than drilling from the surface due to the presence of up to 300m of volcanic rocks above the gold and silver veins. The historic mine has a significant production history of 5 million ounces of gold equivalent (4M Oz Au and 44M Oz Ag), indicating the potential for further mineralization at depth.
ON DEALS AND CORPORATE ISSUES
- Prismo Metals Inc., announced the appointment of its new President. This move will allow Co-Founder and former President & CEO, Dr. Craig Gibson to move into the role of Chief Exploration Officer (CXO) to focus more on the execution of field programs and exploration strategies (Palos Verdes project, Sinaloa).
- Americas Gold and Silver Corporation announced the appointment of its new Chief Operating Officer, effective May 6, 2024 (Cosala mine, Sinaloa).
- GR Silver Mining Ltd., has enhanced its financial position by signing a definitive agreement to sell Marlin Gold Mining Ltd. to WP Servicios Industriales S.A. de C.V. This transaction allows GR Silver to focus on resource growth and development of its core Plomosas Project in Sinaloa. The company will receive a 0.5% NSR Royalty on certain concessions as part of the deal. The CEO of GR Silver highlighted the positive impact on the company’s balance sheet and its ability to continue with its mining programs. WP’s Mining Division CEO expressed interest in potential cooperation with GR Silver in the region. The Plomosas Project holds significant silver resources, particularly in the San Marcial area, which is a key focus for exploration and potential development. Overall, the transaction is seen as a strategic move to strengthen GR Silver Mining’s financial position and operational focus.
- Royalties Inc., announced advances on two of its major investments in Mexico. The company continues its lawsuit against Capstone Gold SA de CV to recognize the 2% NSR on the production since 2019 from five Portree claims on the Cozamin Mine, on which a lien has been registered, as well as monetizing its silver asset, the Bilbao silver-zinc-lead property in Zacatecas, Mexico, where the company has a 1.5% NSR.
- Sonoran Desert Copper Corporation received a Management Cease Trade Order (MCTO) due to a delay in filing required financial documents for the year ended December 31, 2023. The company applied for the MCTO as an alternative to a general Cease Trade Order and is working with an auditor to rectify the default. The MCTO prohibits trading by specific company officials and individuals with access to undisclosed material information. If the required filings are not submitted by June 28, 2024, a general cease trade order may be imposed by the regulators. The company will provide bi-weekly default status reports until the issue is resolved.
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 stockwork veining in an epithermal vein system in a project in Sinaloa, Mexico. Photo taken by Miguel A Heredia.
The Mining and Exploration News in Mexico: Highlights on the First Week of January, 2021

By Jorge Cirett
During the 1st week of the year (January 4th to January 10th, 2020), at least 27 press releases were announced by companies working in Mexico. To note, four companies posted exploration advances on their properties, and six more posted news on resources and development. Sierra Metals Corp’s Cusi and Bolivar mines are up for grabs. ON MEXICO ISSUES, a reduction of mineral production is expected for 2020 due to the effects of the Covid-19 pandemic. Camimex pointed on the lack of clarity on the distribution of the mining royalties. At least six companies plan to start mining operations in this year. ON EXPLORATION, in Sonora, Aztec Minerals updated its exploration status at Cervantes; Mojave Gold updated on exploration at its Sonora Gold project, where at least two structures tens of meters in width run for kilometers; Canuc Resources is using results from a magnetic survey for targeting. In Chihuahua, Mammoth Resources has received the permit for drilling at Tenoriba. ON MINING, Endeavour Silver, Aura Minerals and Torex Gold presented Q4 2020 production results. Mexus Gold US continues to stack ore at its Santa Elena mine. Sierra Metals presented a PEA that doubles the processing capacity at its Cusi mine. ON FINANCING, Ridgestone Mining increased its private placement to $2.32 M. SilverCrest Metals entered into a credit agreement for US$76.5 M. Fabled Silver and Silver Wolf Exploration granted stock options. Silver Dollar Resources made a clarification requested by the OTC Market. ON RESOURCES AND DEVELOPMENT, GR Silver Mining reported good drilling results at the Plomosas mine, in the Plomosas project, Sinaloa. Sonoro Gold reported drilling results from Cerro Caliche, Sonora. Discovery Metals released drilling results from two vein trends at Cordero, Chihuahua. Prime Mining updated on exploration at Los Reyes, Sinaloa. Fabled Silver Gold informed on surface sampling at Santa María, Chihuahua. GoGold released results from drilling at El Favor, on its Los Ricos North project, Jalisco. ON DEALS AND CORPORATE ISSUES, Argonaut Gold and AP Mining have amended the agreement for the previously announced sale of the Ana Paula project to AP Mining. Minaurum Gold entered into an option agreement with Fortuna Silver on the Taviche property in Oaxaca, agreement by which Fortuna can gain up to 80% interest on the project. Sierra Metals is evaluating the sale of its assets, a merger or business combination. ON SOCIAL RESPONSIBILITY, Fresnillo, the Chihuahua Mining Cluster and Grupo Mexico informed on actions that benefit society.
ON MEXICO ISSUES
- Camimex (Camara minera de México) sees the mining production to decrease in 2020 due to the pandemic. The decrease is expected to reach 10% for gold, 6 to 6.3% for silver and lead, 3% for copper and 25% for iron.
- Camimex pointed on the lack of clarity on the distribution of the mining royalties. According to the previous rules the resources funded infrastructure on communities across mining regions. After de federal government changed the rules, it is not clear now how these resources are distributed. Mining companies paid US$196 M (3,990 million pesos) in royalties in 2019.
- Companies aspiring to start new mines in 2021 include: Mag Silver (Juanicipio, Zacatecas), Orla Mining (Camino Rojo, Zacatecas), Minera Alamos (Santa, Sonora), Golden Minerals (Rodeo, Durango), VanGold Mining (Pinguico and El Cubo, Guanajuato), Sonora Gold (Cerro Caliche, Sonora) and Candelaria Mining (Pinos, Zacatecas).
ON EXPLORATION
- Aztec Minerals Corp. informed that during 2020 formed a 65/35 joint venture with Kootenay Silver on the Cervantes project, Sonora. Also during the year an additional IP-resistivity survey was performed to define new targets; geological mapping, geochemical sampling and geophysical surveying have identified 11 targets in total, of which 7 are in preparation for drilling. Aztec intends to extend detailed geologic, structural, and alteration mapping and sampling at the Purisima West, Estrella, Jacobo, Brazil, and other targets at Cervantes, and plan and permit a phase 1 reverse circulation drilling program on the California and Purisima targets.
- Mojave Gold Corp. updated on work done during December of 2020 at its Sonora Gold project in Sonora. A 261 sample stream sediment survey was carried out in the 6,000 hectares property, and detailed geological mapping and rock chip sampling was carried out on the Caracahui and Sonora Cooper areas, including underground mapping on the latter. The Sonora Cooper West/Las Llantas structure has been observed to be over 3 km in length, reaching widths of over 70 m. “In total, mineralized structures in the western part of the project area have been observed to extend more than 8.5 kilometers in cumulative length…. The Sonora Cooper mineralized area contains large structures often reaching over 70m in width, that were mapped in detail for over 500m along strike. Additionally, detailed underground mapping was completed over 605m length in the Sonora Cooper adit and over a 260m length of the Guadalupe adit. A total of 160 rock chip samples were collected from the underground workings”.
- Mammoth Resources Corp. announced SEMARNAT (Mexican environmental agency) has approved the drill permit application on its Tenoriba property in Chihuahua. Mammoth is planning to start a drilling campaign before the end of the first quarter.
- Canuc Resources Corp. received results from a drone supported magnetic survey at its San Javier project in Sonora. Three large magnetic high features (1,000 by 600 m, 800 by 600 m, 600 by 600m) were identified. “Detailed processing of the data suggests that there are stronger magnetic features within the larger target areas which may represent areas of higher-grade mineralization. Canuc is now carrying out detailed ground magnetic surveys on these targets and is scheduled to begin drilling in the next few weeks”.
ON MINING
- Mexus Gold US. released an update of mining operations at its Santa Elena mine in Sonora (not to mistake for First Majestic’s Santa Elena mine, also in Sonora). The company is stacking material from a shear zone grading 0.9 gpt to 1.2 gpt Au.
- Sierra Metals Inc. filed a NI 43-101 independent technical report for a doubling of output at its Cusi mine in Chihuahua. The preliminary economic assessment (PEA) highlights include an after tax Net Present Value (NPV) of US$81 M at an 8% discount rate, at a long term silver price of US$20/Oz. The project envisages increasing the production from 1,200 tonnes per day (tpd) to 2,400 tpd @ 127.2 gpt Ag, 0.12 gpt Au, 0.48% Zn, 0.34% Pb, with a 13 year mine life and recoverable 33.4 M Oz Ag.
- Endeavour Silver Corp. reported the highest quarterly production in the last two years from its mines in Mexico. Total production in the quarter was 237.4 K tonnes mined at a rate of 2,580 tpd @ 169 gpt Ag, 1.90 gpt Au, recovering 86.8% Ag, 87% Au, to produce 1.12 M Oz Ag, 12,586 Oz Au.

- Torex Gold Resources Inc. reported Q4 production for 2020. At its Limon-Guajes mine in Guerrero, 12,560 tpd were processed, with 1,300 tpd mined from underground and 18,360 tpd mined from open pit with a waste to ore strip ratio of 6.2, to produce 130,640 Oz Au in the quarter. In the year, 11,370 tpd were processed to produce 430,480 Oz Au.
- Aura Minerals Inc. released preliminary production reports for the fourth quarter of 2020. In the period the Aranzazu mine in Zacatecas produced 19,073 Oz AuEq, which added up to the 65,497 Oz AuEq for the full year. During December 89.1 K tonnes were processed, and the company intends to increase processing to 100 K tonnes per month during the second half of 2021.
ON FINANCING
- SilverCrest Metals Inc. entered into a credit agreement with an affiliate of RK Mine Finance to provide a secured project financing facility for a total of US$120 M for funding the construction at Las Chispas, Sonora. Concurrently SilverCrest has entered into a fixed price engineering, procurement and construction contract with Ausenco Engineering Canada Inc. with a lump sum turnkey price of US$76.5 M that is to include construction of a 1,250 tonne per day process plant at Las Chispas.
- Fabled Silver Gold Corp. granted 200,000 stock options to a consultant of the company (Santa María, Chihuahua).
- Silver Dollar Resources Inc. was requested by the OTC Markets Group Inc. to issue a statement about promotional activity concerning its common stock. OTC Markets questioned about “two promotional newsletter emails published by CrushTheStreet.com (“CTS”) and Wealth Research Group (“WRG”) discussing the emerging bull market for commodities, particularly silver, and citing the Company in both publications… The Company has been advised by OTC Markets that OTC Markets takes the position that aspects of the statements were overly promotional. The Company wishes to caution readers that these statements are speculative in nature” (La Joya, Durango).
- Silver Wolf Exploration Ltd. granted incentive stock options for the purchase of 1 M shares to directors, officers, consultants, and employees of the Company (Ana María and Laberinto, Durango).
- Ridgestone Mining Inc. increased the previously announced private placement from $1.9 M to $2.32 M, for additional gross proceeds of $420 K (Rebeico, Sonora).
ON RESOURCES AND DEVELOPMENT
- GR Silver Mining Ltd. reported good underground drilling results from the Plomosas mine area at its Plomosas project in Sinaloa. “The mineralization is represented by thick intercepts of Au-Ag-Pb-Zn-Cu mineralization hosted in a series of hydrothermal breccias”. The highlighted results comprise 83 m @ 2.52 gpt Au, 33 gpt Ag, 0.9% Pb, 2.9% Zn, 0.3% Cu (420 gpt AgEq), including 4.0 m @ 9.35 gpt Au, 38 gpt Ag, 0.4% Pb, 10.5% Zn, 0.3% Cu (1,319 gpt AgEq) and 11.0 m @ 9.41 gpt Au, 135 gpt Ag, 5.7% Pb, 9.8% Zn, 0.5% Cu (1,596 gpt AgEq).
- Sonoro Gold Corp. reported favourable results from eight reverse circulation drill holes at its Cerro Caliche project in Sonora. At the Buena Suerte target, highlighted intercepts comprise 3.0 m @ 1.48 gpt Au; 7.6 m @ 1.32 gpt Au, 12.2 m @ 0.86 gpt Au; 12.2 m @ 0.69 gpt Au; 27.44 m @ 1.17 gpt Au (including 3.0 m @ 4.70 gpt Au); 12.2 m @ 0.50 gpt Au. Highlighted intercepts from the Japoneses target include 22.9 m @ 0.57 gpt Au; 10.7 m @ 0.45 gpt Au; 13.7 m @ 0.60 gpt Au; 10.7 m @ 0.40 gpt Au, 12.2 m @ 0.36 gpt Au; 4.6 m @ 0.41 gpt Au; 27.44 m @ 1.17 gpt Au; 12.2 m @ 0.50 gpt Au.
- Discovery Metals Corp. released results from 10 diamond drill holes targeting the Parcionera and Josefina vein trends at its Cordero project in Chihuahua. Highlighted intercepts comprise 4.4 m @ 246 gpt Ag, 0.39 gpt Au, 6.5% Pb, 0.4% Zn (524 gpt AgEq); 0.5 m @ 665 gpt Ag, 0.58 gpt Au, 13.8% Pb, 13.7% Zn (1,765 gpt Ag) on the Parcionera vein trend and 3.3 m @ 196 gpt Ag, 0.17 gpt Au, 5.6% Pb, 4.9% Zn (612 gpt AgEq); 1.6 m @ 20 gpt Ag, 0.11 gpt Au, 0.3% Pb, 1.8% Zn at the Josefina vein trend.
- Prime Mining Corp. provided a year-end update on its Los Reyes project in Sinaloa. “The ongoing work includes field mapping, trench sampling, rock alteration analysis and interpretation and re-logging of historic diamond drill core…. Re-logging of several existing diamond drill core holes also identified that adularia, a crystalline mineral, containing high-grade gold and silver locally with visible gold, is associated with nearby altered rock types. The adularia appears to be vertically zoned”. The project is a district scale low sulfidation epithermal mineralizing system on which more than US$20 million have been spent over 25 years.
- Fabled Silver Gold Corp. completed the sampling program to evaluate the IP geophysical anomalies on the Santa María property in Chihuahua. The sampling returned silver anomalous results over two geophysical anomalies. Eleven first priority anomalies have been delineated, generally in an east-west direction.
- GoGold Resources Inc. released drilling results from El Favor deposit at its Los Ricos North property in Jalisco. Highlighted core length results comprise 30.2 m @ 0.18 gpt Au, 63 gpt Ag (1.03 gpt AuEq), including 8.6 m @ 0.28 gpt Au, 146 gpt Ag (2.23 gpt AuEq); 5.6 m @ 0.55 gpt Au, 287 gpt Ag (4.37 gpt Au), including 1.7 m @ 1.7 gpt Au, 834 gpt Ag (12.83 gpt AuEq); 70.5 m @ 0.15 gpt Au, 50 gpt Ag (0.82 gpt AuEq), including 9.7 m @ 0.55 gpt Au, 199 gpt Ag (3.20 gpt AuEq); 15.3 m @ 0.30 gpt Au, 151 gpt Ag (2.31 gpt AuEq); 12.8 m @ 0.30 gpt Au, 126 gpt Ag (1.99 gpt AuEq), including 3.3 m @ 0.89 gpt Au, 302 gpt Ag (4.91 gpt AuEq); 41.1 m @ 0.24 gpt Au, 76 gpt Ag (1.24 gpt AuEq); 21.0 m @ 0.11 gpt Au, 74 gpt Ag (1.10 gpt AuEq); 27.0 m @ 0.97 gpt Au, 113 gpt Ag (2.47 gpt AuEq); 11.0 m @ 0.28 gpt Au, 160 gpt Ag (2.40 gpt AuEq); 52.1 m @ 0.69 gpt Au, 254 gpt Ag (4.08 gpt AuEq); 11.6 m @ 0.43 gpt Au, 148 gpt Ag; 32.5 m @ 0.32 gpt Au, 63 gpt Ag (1.15 gpt AuEq).
ON DEALS AND CORPORATE ISSUES
- Argonaut Gold Inc. and AP Mining “have amended the agreement for the previously announced sale of the Ana Paula project to AP Mining (see press release dated September 11, 2020) to allow more time to meet the regulatory and government approvals required for closing. In connection with the amendment, AP Mining has agreed to pay an additional US$1.0 million at 15 months from the closing date and to reimburse all of Argonaut’s costs incurred associated with the Ana Paula project incurred between January 1, 2021 and the closing of the transaction. Closing continues to be subject to financing and receipt of all necessary approvals, which is expected in the first quarter of 2021” (Ana Paula, Guerrero).
- Minaurum Gold Inc. entered into an option agreement with Fortuna Silver Mines Inc. pursuant to which Fortuna can earn up to an 80% interest in Minaurum’s Taviche silver project in Oaxaca. Fortuna can earn an initial 60% by making cash payments totalling $450 K and incurring in US$4 M in work expenditures over three years. Fortuna can earn an additional 20% interest “by funding Minaurum ‘s acquisition by way of option exercise of the remaining 20% interest”. The cash installments to make comprise US$75 K upon signing, US$100 K on the first anniversary, US$125 K on the second anniversary and US$150 K on the third anniversary. Drilling by previous operators of the project returned up to 34.12 m @ 262 gpt Ag and 8.35 m @ 2.05 gpt Au.
- Sierra Metals Inc. announced that “its Board of Directors, supported by its management team and with the full support of Arias Resource Capital Fund L.P., Arias Resource Capital Fund II L.P. (the Company’s two largest shareholders) and Arias Resource Capital Fund II (Mexico) L.P., has commenced a process to explore and evaluate potential strategic alternatives focused on maximizing shareholder value. These alternatives could include, among other things, the sale of part or all of the Company, a sale of some of the assets of the Company, a merger or other business combination with another party, or other strategic transactions” (Cusi and Bolivar mines, Chihuahua).
ON SOCIAL RESPONSIBILITY
- Minera Fresnillo donated computing equipment in Caborca, Sonora.
- The Chihuahua Mining Cluster president, Pablo Mendez Alvídrez stated that the industry will aid with the acquisition of the Covid-19 vaccine, once it is on sale by pharmacies, for its distribution on mining communities.
- The Grupo Mexico Foundation delivered a significant amount of protective equipment for health care personnel
Content like what you have just read can be seen at https://gambusinoprospector.com/ and at LinkedIn’s Mexico Mineral Exploration Group.
On the image below: Quartz veining from a project in San Luis Potosí. Picture by Jorge Cirett.

Highlights on the Fifth Week of March, 2017. Mineral Exploration in Mexico
During the 13th week of the year (March 27th to April 2nd, 2017), at least 24 press releases were announced by companies working in Mexico. ON EXPLORATION, Alix Resources commenced a lithium drilling program in Sonora, and One World announced an exploration second phase that is to include drilling in Baja California. Canuc presented historical rockchip results from its Santa Rosa property in Sonora, while Almadex resumed drilling at El Cobre in Veracruz, also presenting surface assays supporting a gold copper porphyry target on an undrilled area, and Gainey is finishing a drilling campaign in Nayarit. ON MINING, Americas Silver, Mag Silver and Sierra Metals presented operating and/or financial results for 2016, while First Majestic presented production results from its six mines in Mexico. ON FINANCING, Agnico Eagle announced a US $220 M offering, Wealth Minerals raised $4.86 M and Primero Mining closed an extension on a revolving credit facility for $75 M. ON RESOURCES AND DEVELOPMENT, Endeavour Silver presented a resource estimate for its El Compas mine in Zacatecas. Torex Gold announced a high-grade resource for its sub-sill deposit at its El Limon-Guajes property in Guerrero. Corex Gold continues mine construction at its Santana property in Sonora and Golden Minerals disclosed a corrected resource estimate for its Santa Maria property in Chihuahua. First Majestic presented resource estimates for its six operating mines in Mexico. ON DEALS AND CORPORATE ISSUES, Santacruz Silver finalized the sale of El Gachi property in Sonora to First Majestic. HECLA exercised the right to lease Golden Minerals mill in Durango until the end of 2018.
ON EXPLORATION
- Alix Resources Corp. commenced a 3,000 m drilling program at its Agua Fria lithium project in Sonora. The reverse circulation program is to test 5 km of prospective length of sedimentary units hosting Li-enriched clay horizons. Laser induced breakdown spectroscopy is to be used for real-time field analysis of drill cuttings.
- One World Minerals Inc. announced a second phase program at is Rico Litio project in Baja California. This phase is to include a geophysical survey, geochemical sampling and a 4,000 m drill program to be completed before the end of June 2017. A third phase program will include pump test work to determine aquifer capacity, draw down flow rates and concentrations of lithium and potassium.
- Canuc Resources Corp. provided a summary of previously compiled information on the Santa Rosa mine in the San Javier district, Sonora. The Santa Rosa mine consists of five levels spanning a strike length of 490 m and 135 down dip, ranging from 0.3 to 5.0 m in width and staying open along strike and to depth. The average of 341 samples of vein material is 1.45 m @ 388 g/t Ag, 2.02 g/t Au, 1.6% Pb, 1.3% Zn. Two subparallel veins, El Capulin and Las Norias, are virtually unexplored.
- Almadex Minerals Ltd. informed that drilling recommenced in February on the Norte zone of its El Cobre project in Veracruz, and that a second rig has started coring at the site. Two kilometres south of the Norte zone is the undrilled Villa Rica target area, where 18 subcrop and outcrop samples collected in a 150 x 150 meters area (now called Raya Tembrillo). Once the mapping is complete, drilling is planned for the Villa Rica zone later in 2017.
- Gainey Capital Corp. is currently finishing its phase 1 drill program on its Colomo property in Nayarit, focused on La Higuerita and La Nueva Victoria zones, with results for La Nueva Victoria already released and those of La Higuerita still pending.
ON MINING
- Americas Silver Corp. presented financial and operational results for 2016. Cash and cash equivalents were $24.1 M by the end of the 2016, with net working capital of $20.1 M. “A low interest rate $15.0 million concentrate pre-payment facility was entered in January 2017 after year end with a subsidiary of Glencore PLC (“Glencore”) to fund a portion of the development costs for San Rafael” (Cosala and San Rafael, Sinaloa).
- First Majestic Silver Corp. released 2016 production results for its six operating mines in Mexico: La Encantada in Coahuila, La Parrilla in Durango, Del Toro in Zacatecas, San Martin in Jalisco, La Guitarra in Estado de Mexico and Santa Elena in Sonora, according to the following table:

- Sierra Metals Inc. presented financial results for 2016, which include $42.1 M of cash and cash equivalents by the end of the period, and a net debt of $36.5 M (Cusi and Bolivar, Chihuahua).
- Mag Silver Corp. presented the financial results for 2016, with working capital of US$139.1 M including cash, cash equivalents and term deposits of $138.3 M. In March 2016, the company closed a $65 M bought deal financing with an over-allotment option that took the total gross proceeds to $74.7 M. During 2016 the company funded $7.36 M on the Juanicipio project (under JV, Fresnillo PLC 56%, Mag Silver 44%). A 20,000 metre exploration drill program is expected to be approved for 2017 for Juanicipio (Juanicipio, Zacatecas; Cinco de Mayo, Chihuahua).
ON FINANCING
- Agnico Eagle Mines Ltd. announced an offering to an institutional investor in the United States for total consideration of approximately US$220 M (La India, Sonora; Pinos Altos, Chihuahua).
- Wealth Minerals Ltd. arranged a non-brokered private placement for gross proceeds of up to $4.86 M (Coronado and Valsequillo, Chihuahua).
- Primero Mining Corp. has closed the extension of the maturity of its $75 M revolving credit facility with its syndicate of lenders.
ON RESOURCES AND DEVELOPMENT
- Endeavour Silver Corp. reported its initial NI-43-101 mineral resource estimate and a preliminary economic assessment (PEA) for its El Compas mine project in Zacatecas. The indicated resource stands at 184.4 K tonnes @ 104 g/t Ag, 7.31 g/t Au, for 495 K Oz Ag, 34.9 K OZ Au, and the inferred resource is 216.8 K tonnes @ 76 g/t Ag, 5.38 g/t Au, for 527 K Oz Ag, 37.5 K Oz Au. The process is expected to recover 73% and 83.5% of the silver and gold contained in the ore at an estimated cash cost of $9.09 and AISC $9.64 per AgEq Oz. The company has made a production decision subject to receiving an explosives permit and further clarity from the Zacatecas government regarding an exemption from the new Zacatecas state environmental tax.
- Torex Gold Resources Inc. announced a high-grade CIM compliant resource for the Sub-Sill deposit at its El Limon-Guajes property in Guerrero. Indicated resources include 0.35 M tonnes @ 7.82 g/t Au, 6 g/t Ag, 0.27% Cu, containing 89 K Oz Au, 71 K Oz Ag, and inferred resources include 1.33 M tonnes @ 7.58 g/t Au, 11.5 g/t Ag, 0.6% Cu, containing 324 K Oz Au, 490 K Oz Ag. Near term production is expected from the deposit, as the access ramp is now less than 170 m from the skarn rocks that host it.
- Corex Gold Corp. is continuing construction and mining activities at its Santana project in Sonora. To date over 23 K tonnes have been placed on the first leach pad, and metal leaching is expected to start later in April. A second leach pad will be supplied with finer crush material, with the results from the two heaps aiding to optimize the process.
- Golden Minerals Co. released a new resource estimate for its Santa Maria property in Chihuahua. “Due to an adjustment in the precise location of the claim, the updated property position results in an approximate 25 percent reduction to the previously announced inferred resource estimate…”. Indicated resources stand at 180 k tonnes @ 304 g/t Ag, 1.4 g/t Au, for 1.73 M Oz Ag, 8.1 K Oz Au, and inferred resources at 120 k tonnes @ 343 g/t Ag, 1.0 g/t Au, for 1.37 M Oz Ag, 1.64 K Oz Au, with an expected dilution of 10% and 19% respectively.
- First Majestic Silver Corp. disclosed mineral resource estimates for its six mining units in Mexico and one advanced project: La Encantada in Coahuila, La Parrilla in Durango, Del Toro in Zacatecas, San Martin in Jalisco, La Guitarra in Estado de Mexico, Santa Elena in Sonora, and La Joya in Durango, with the consolidated figures on the following table:

ON DEALS AND CORPORATE ISSUES
- Santacruz Silver Mining Ltd. announced the completion of the sale of its interest on the El Gachi property in Sonora, to First Majestic Silver Corp. for total consideration of US$2.5 M plus VAT. The company made payments to JMET LLC (US$0.75 M) and Minera Hochschild Mexico (US$0.5 M + VAT), leaving a non-interest balance of US$1.5 M owing to JMET related to previous restructuring fees. Having divested El Gachi to First Majestic and the San Felipe project to Americas Silver, the company is now to focus on its production assets, The Veta Grande project in Zacatecas and the Rosario project in San Luis Potosi.
- Golden Minerals Co. announced that Minera Hecla S.A. has exercised its right to extend the lease of Golden’s oxide mill in Durango, through December 2018. At HECLA’s anticipated average 400 tonnes per day production rate, Golden anticipates net cash of approximately $0.4 M per month.
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 below, A hydrothermal breccia hosted in intrusive rocks stands out in a stream polished face, located in the Soconusco region of Chiapas. Photo by Jorge Cirett.

Highlights on the Third Week of March, 2017. Mineral Exploration in Mexico
During the 11th week of the year (March 13th to March 19th, 2017), at least 13 press releases were announced by companies working in Mexico. ON EXPLORATION, Minaurum identified two more vein targets on its Quintera property in Sonora. ON MINING, Primero mining and Impact Silver presented 2016 financial results, while Starcore presented last quarter results. ON FINANCING, Five companies announced financial news, with Argonaut Gold closing a bought deal for C$40M and Silver Spruce raising $459 K. Source Exploration has a new largest shareholder, Riverside announced a $416 K oversubscription and VVC Exploration informed of errors on its last two debentures. ON RESOURCES AND DEVELOPMENT, Kootenay Silver started a second phase metallurgical testing at its La Cigarra property in Chihuahua, Endeavour Silver reported high grade results at its Terroneras property in Jalisco and VVC Exploration applied for and exploration permit at its Salamayuca copper property in Chihuahua. ON DEALS AND CORPORATE ISSUES, no relevant news.
ON EXPLORATION
- Minaurum Gold Inc. identified two new vein targets, Amalia and Nueva Europa, at its La Quintera project in Sonora. At Amalia dump samples returned values of up to 256 g/t Ag, 14.7 g/t Au, 2.1% Cu, 1.3% Pb, 2.0% Zn, on a positive topographic feature 500 m long. At Las Europas two vein zones, Nueva Europa and Europa, traced for 1,500 and 400 m respectively. “Vein widths range from stringers to vein/breccia zone measuring more than one metre wide.” Selected samples from Las Europas returned 155; 211; 213; 235; 263; 308; 2,500; 3,120 g/t Ag, with Cu, Pb and Zn credits.
ON MINING
- Primero Mining Corp. reported financial results for 2016, including figures from its San Dimas operations in Durango. During the year 113,968 AuEq Oz were produced at the unit, at cash cost $856 per AuEq Oz and AISC of $1,117 per Au Oz. On 2016 the San Dimas operations suffered reduced underground development rates and ventilation restrictions that reduced mine productivity, averaging 2,074 tpd. The San Dimas operation remains halted by a unionized strike opposed to changes on labor reduction, the short-term bonus structure and a more continuous shift cycle needed to return to profitability. At the end of the year the company held a $20 M cash position, and has signed a binding agreement for a $75 M three-year term loan with Sprout Resource Lending Partnership.
- Impact Silver Corp. announced its 2016 financial and production results. Production at the Guadalupe mill during 2016 came mainly from the Cuchara (42%), San Ramon Deeps (38%) and Mirasol (17%) mines. The average grade was 180 g/t Ag, to produce 952,768 Oz Ag. The company’s cash position at the end of the year was $8.1 M.
- Starcore Interantional Mines Ltd. filed the results for the quarter ended January 31, 2017. The San Martin mine in Queretaro produced 3,000 Oz Au and 15,500 Oz Ag during the period, milling 69,700 tonnes @ 1.91 g/t Au, 14.7 g/t Ag, recovering 70.7% Au and 47.1% Ag. Cash cost per AuEq Oz stood at $1,105. The Altiplano concentrate processing plant at Matehuala, San Luis Potosi is now fully operational, and the CIL plant at San Martin is complete, allowing the process of higher grade carbonaceous ore. Cash and short-term investments stand at $4.7 M.
ON FINANCING
- Source Exploration Corp. announced that Palisade Global Investments Ltd. has become the largest shareholder, with 12.68% of the issued common and outstanding shares, percentage that might grow if the warrants of the units purchased on the last issuance are exercised (Las Minas, Veracruz).
- Riverside Resources Inc. announced an oversubscription by $416 K on its previously announced private placement, for total proceeds of $3.441 M (El Capitan in Durango, Glor in Sonora).
- Silver Spruce Resources Inc. closed its current non-brokered private placement, raising gross proceeds of $459 K (Pino de Plata and Encino de Oro in Chihuahua).
- Argonaut Gold Inc. closed its previously announced bought deal for aggregate proceeds of C$40 M (La Colorada, Sonora; El Castillo, Durango).
- VVC Exploration Corp. informed of errors committed on the last 2 debentures issuances, on December 2, 2016 and June 4, 2015.
ON RESOURCES AND DEVELOPMENT
- Kootenay silver Inc. has begun the second phase of leach testing of oxide and sulfide mineralization (the latter not previously tested) on its La Cigarra silver project in Chihuahua, applying the proprietary SILVOX Technologies Inc. Previous testing demonstrated higher Ag recoveries by this method against standard leaching. Previous metallurgical testing using conventional flotation achieved recoveries of up to 88%, but the method entails higher capital and operating costs.
- Endeavour Silver Corp. continues to expand high grade mineralization zones to greater depths within the Terronera vein and at shallow depths within the La Luz vein at the Terronera project in Jalisco. At Terronera vein high grade mineralization was extended to 400 m depth and remaining open in that direction. New intercepts include 16.3 m @ 1.8 m @ 1.8 g/t Au, 230 g/t Ag; 1.7 m @ 6.9 g/t Au, 82 g/t Ag; 7.7 m @ 1.8 g/t Au, 116 g/t Ag; 3.5 m @ 2.1 g/t Au, 192 g/t Ag; 7.1 m @ 3.0 g/t Au, 118 g/t Ag; 7.5 m @ 0.7 g/t Au, 307 g/t Ag. At La Luz vein, 2.2 km NE of the Terronera vein, results include 1.0 m @ 19 g/t Au, 407 g/t Ag; 1.5 m @ 29.5 g/t Au, 651 g/t Ag; 1.4 m @ 23.1 g/t Au, 245 g/t Ag; 2.0 m @ 12.8 g/t Au, 21 g/t Ag; 2.2 m @ 57 g/t Au, 63 g/t Ag. None of these results are to be included on the upcoming resource estimate for the property.
- VVC Exploration Corp. has filed a request for a permit for exploration drilling on its Samalayuca copper project in Chihuahua. Drilling is to be concentrated on the Kaity concession, seeking further understanding of the project, with up to 53 drillholes using previously constructed roads and historically disturbed areas to avoid any damage to the environment, and producing an updated resource by the second or third quarter of 2017.
ON DEALS AND CORPORATE ISSUES
- No relevant news this week.
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 below, Tacaná volcano on the left (Mexico) and Tajumulco volcano on the right (Guatemala), as seen from the plane approaching Tapachula, Chiapas. Photo by Jorge Cirett.

Highlights on the First Week of March, 2017. Mineral Exploration in Mexico
During the 9th week of the year (February 27th to March 5th, 2017), on the eve of PDAC, at least 39 press releases were announced by companies working in Mexico, the greatest weekly figure on the year. ON EXPLORATION, Arian Silver presented results from exploration in Zacatecas, Sierra Metals announced high grade results from a brownfield area in Chihuahua, Source Exploration commenced a drill program in Veracruz, San Marco Resources and Silver One announced soil sampling results from properties in Sonora and Nayarit, and Kootenay Silver announced exploration work in 2017 by partner in Sonora. ON MINING, Primero Mining informed reduction of operations in Durango; Autlan informed on its mine in Sonora, Gold Resource, Golden Minerals and Great Panther presented financial, operational and or production results for 2016. ON FINANCING, Six companies announced financing rounds for $1.85 M, exercise of warrants for $717 K, a re-purchase of shares, a $150 M loan, a private placement for $50 M and the re-negotiation of terms on a loan. ON RESOURCES AND DEVELOPMENT, Fortuna Silver and Primero mining updated resources to 2016, Mexus Gold continues mine construction in Sonora, Marlin gold evaluates a pit layback in Sinaloa and Fortuna Silver signs a surface rights agreement in Durango. ON DEALS AND CORPORATE ISSUES, Santacruz Silver and First Majestic signed an agreement on a property in Sonora, and Red Tiger informed it is in violation of a loan covenants.
ON MEXICO ISSUES
- First Majestic Silver’s, El Pilon mine in San Martin de Bolaños, Jalisco, suffered a robbery, with 57 silver bars (25 Kg each) extracted and transported in company’s trucks. One of the vehicles was recovered nearby, with part of the bounty.
ON EXPLORATION
- Arian Silver Corp. presented sample results from its La Africana project in Zacatecas. Assay results from 11 grab samples, of which seven are between 196 and 842 g/t Ag, and up to 4.9% Zn.
- Sierra Metals Inc. announced high-grade silver intercepts in the Santa Rosa de Lima complex at its Cusi mine in Chihuahua. The 15,000 m program has an 80% advance to date (10,200 m). True width (TW) Intercepts include 3.2 m 332 g/t Ag; 2.5 m @ 200 g/t Ag; 1.5 m @ 292 g/t Ag; 1.5 m @ 1,152 g/t Ag; 3.1 m @ 1,037 g/t Ag, with up to 5.2% Pb and 3.5% Zn. The Santa Rosa de Lima complex has an anticipated extension of 12 km within Sierra Metals concessions; with mineralization located 100 m below the surface, and occasionally observed at the intersections of other veins. The drilling covers about one kilometer of the structure.
- Source Exploration Corp. commenced a diamond drill program for the Las Minas copper-gold skarn project in Veracruz. An initial 2,000 – 3,000 metres infill and step out at the El Dorado – Juan Bran zone, with the aim of completing a maiden NI-43-10 resource estimate on early 2017. Further mapping, trenching and sampling will be carried out on the Pueblo Nuevo concession. Previous drilling has outlined a mineralized zone 420 m in width, 6.0 to 82 m in thickness, and extending more than 600 m in depth; the zone remains open on strike and down-dip.
- San Marco Resources Inc. announced that soil sampling results from its Chunibas property in Sonora have confirmed a 600 x 800 m target. Drilling is expected to probe deeper and on-strike mineralized zones.
- Kootenay Silver Inc. informed Pan American Silver Corp. is to proceed in 2017 with a US$2.0 M budget on La Negra property in Sonora, with 6,500 m of diamond drilling, geological mapping and reconnaissance work to define additional prospective targets proximal to La Negra within the Promontorio project.
- Silver One Resource Inc. completed geochemical soil surveys at its Peñasco Quemado and La Frazada properties in Sonora and Nayarit respectively. At Peñasco Quemado a 3,000 m long, 300 m wide linear anomaly overlaps with the area of the current resource, with high manganese (0.17% – 1.1%) and barium (0.15% – 0.88%), and more localized zinc (400 – 3,500 ppm) and lead (135 – 800 ppm); a second anomaly 2,000 m long by 1,000 m wide is a new target. The survey consisted of 1,925 soil samples, XRF assayed, with 320 quality control samples sent for assaying to a US lab, with a very good correlation. At La Frazada the 222 soil samples were not that successful to highlight some of the veins, the reason forwarded being the probable leaching of metals in the subtropical environment.
ON MINING
- Grupo Autlan announced its Lluvia de Oro property in Sonora has a mine life of 15 years, and that its cash flow increased with the operation of its first gold mine.
- Primero Mining Corp. is reducing the complexity and scale of operations at its San Dimas mine in Durango, with significant decreases to the workforce.
- Gold Resource Corp. presented 2016 production figures, having milled 450.2 K tonnes at a rate of 1,295 tonnes per day (tpd) and grade of 2.13 g/t Au, 139 g/t Ag, 0.29% Cu, 1.21% Pb, 3.78% Zn; with recoveries standing at 89% Au, 92% Ag, 78% Cu, 74% Pb, 84% Zn. Yearly production amounted to 27,628 Oz Au, 1.86 M Oz Ag, 1,035 tonnes Cu, 4,049 tonnes Pb, 14,302 tonnes Zn. The company is targeting 2017 annual production of 27,500 Oz Au, 1.85 M Oz Ag.
- Golden Minerals Co. presented operational results for 2016, which include a profit on the lease of an oxide plant, granting the right to operate such plant until the end of 2018; obtained an additional $1.8 M in other operating income related to sales and farm-outs of non-strategic property and spent $3.7 M in exploration of the Santa Maria and Rodeo properties in Chihuahua and Durango respectively.
- Great Panther Silver Ltd. reported fiscal year 2016 financial results. During the period 376.7 K tonnes were milled to produce 2.05 M Oz Ag, 22,238 Oz Au, at cash cost $10.35 per AgEq Oz and AISC $14.29. The company ended the year with $67 M in net working capital and no debt (Topia, Durango, Guanajuato mine complex, Guanajuato).
ON FINANCING
- Impact Silver Corp. was ranked on the 2017 TSX Venture 50, among the top performers on the TSX Venture Exchange over the last year, when a 442% increase in share price was achieved, compared with the all-time low during the period.
- Primero Mining Corp. entered into a binding term sheet with Sprott Resource Lending Partnership for a $75 M revolving credit three year term loan.
- Leagold Mining Corp. announced the execution of a non-binding term sheet with Orion Resources Partners to provide the company US$20 M in cash through a senior secured loan facility in the principal amount of US$150 M and an equity private placement of US$50 M (Los Filos, Guerrero).
- Marlin Gold Mining Ltd. announced its intention to purchase, from time to time, an aggregate of 2.48 M common shares in the capital of the company (La Trinidad, Sinaloa).
- San Marco Resources Inc. announced the exercise of warrants for gross proceeds of $717 K during the period Nov 1st, 2016 to February 15th, 2017 (several properties, Sonora).
- Source Exploration Corp. closed a non-brokered private placement for gross proceeds of $1.85 M (Las Minas, Veracruz)
ON RESOURCES AND DEVELOPMENT
- Fortuna Silver Mines Inc. updated mineral reserves and resources to the last day of 2016. Figures on its San Jose mine in Oaxaca include proven and probable reserves of 5.0 M tonnes @ 249 g/t Ag, 1.72 g/t Au, for 40.2 M Oz Ag, 278 K Oz Au; measured and indicated resources of 2.86 M tonnes @ 84 g/t Ag, 0.42 g/t Au for 7.8 M Oz Ag, 39 K Oz Au; and inferred resources of 3.1 M tonnes @ 252 g/t Ag, 1.66 g/t Au for 25.1 M Oz Ag, 165 K Oz Au.
- Mexus Gold US finished a 4.5 m lift on the leach pad at its Santa Elena mine in Sonora (do not mistake with First Majestic’s Santa Elena mine, also in Sonora). The leaching system started testing on the last week of February. The mining plan goal is to increase ore production to 10 K tons per day by the end of 2017.
- Primero Mining Corp. updated mineral reserves and resources to December 31st, 2016, including figures for its San Dimas and Ventanas properties in Durango, and Cerro del Gallo in Guanajuato. At San Dimas proven and probable reserves stand at 4.0 M tonnes @ 4.0 g/t Au, 322 g/t Ag, for 517 K Oz Au, 41.2 M Oz Ag; the measured and indicated resources (which include reserves) stand at 5.0 M tonnes @ 5.0 g/t Au, 387 g/t Ag, for 832 K Oz Au, 61.9 M Oz Ag; and inferred resources of 7.2 M tonnes @ 3.7 g/t Au, 317 g/t Ag, for 860 K Oz Au, 73.4 M Oz Ag. Proven and probable reserves at Cerro del Gallo stand at 32.2 M tonnes @ 0.7 g/t Au, 15 g/t Ag, for 712 K Oz Au, 15.3 M Oz Ag; measured and indicated resources (exclusive of mineral reserves) of 47.9 M tonnes @ 0.6 g/t Au, 13 g/t Ag, with no inferred resources. Measured and Inferred resources at Ventanas stand at 0.2 M tonnes @ 2.5 g/t Au, 258 g/t Ag, for 12 K Oz Au, 1.3 M Oz Ag; inferred resources stand at 0.2 M tonnes @ 2.3 g/t Au, 412 g/t Ag.
- Minera Alamos Inc. announced the completion of a surface rights agreement for its La Fortuna project in Durango. The completion of the agreement enables the company to submit the already prepared mining permit applications. The agreement covers a period of up to 25 years during which time the Company will be required to pay annual rental payments while operating activities are ongoing.
- Marlin Gold Mining Ltd. reported assay results from the first set of holes in the north side of the pit wall at its La Trinidad mine in Sinaloa. Results include 6.5 m @ 2.59 g/t Au, 9.4 m @ 3.27 g/t Au and 10.2 m @ 2.68 g/t Au. A decision to proceed with a pit layback is pending further assays.
ON DEALS AND CORPORATE ISSUES
- Santacruz Silver Mining Ltd. signed an agreement to transfer its interest in the El Gachi property in Sonora to First Majestic Silver Corp. for total consideration of US$2.5 M plus tax. “The El Gachi Property comprises a 48,057 hectare land package located adjacent to First Majestic’s Santa Elena Mine…”.
- Red Tiger Mining Inc. announced that it is currently in violation of certain loan covenants under its senior secured loan with Gerald Metals S.A., owing approximately $18.7 M under the loan agreement. Solvent extraction and electrowining continues from existing copper inventory on the leach pad of the Luz del Cobre mine in Soora, which ceased operations in December 2016.
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 below, broken surface on a boulder from a stream sediment survey in Chiapas, displaying a coarse grained quartz and oxidized sulfide veinlet stockwork in a porphyritic intrusive rock with phyllic alteration, the scale is in centimeters.

Highlights on the First Week of February, 2017. Mineral Exploration in Mexico
During the 5th week of the year (30th January to 5th February, 2017) at least 17 press releases were announced by companies working in Mexico, including three preliminary production reports for 2016 by New Gold, Americas Silver and Excellon. ON EXPLORATION, in Chihuahua one company presented drilling results from a property near Parral, and one other is to start a drilling program in the Sierra Madre. ON MINING, New Gold, Americas Silver and Excellon presented preliminary production results for 2016. In Oaxaca operations were suspended in a mine after a fatality, while at the same site high grade step-out drilling results were released. In Durango high grade drilling results were released on a mine that is seeing its water management system overhauled. ON FINANCING, Three companies reported conducting financial operations, for a consolidated total of $2.75 M. ON RESOURCES AND DEVELOPMENT, high grade drilling intercepts step-outs were reported for mines in Mexico State and Durango. ON DEALS AND CORPORATE ISSUES, a large property in Sonora with enticing exploration potential was optioned, and a small concession in the same area was sold. In Zacatecas the sale of a concession is now complete.
ON EXPLORATION
- Kootenay Silver Inc. released results from the seven remaining drill holes on the 700 m long La Soledad structure, at its La Cigarra property in Chihuahua. The holes tested a 700-meter strike length of the La Soledad structure, which extends southward along strike from the La Cigarra silver deposit for a distance of approximately 2 kilometers. The latest results show the continuity of the structure, although at low silver values. “Follow up drilling on both the 3.8 kilometer RAM and 2.0 kilometer Soledad structures remain a priority for the Company, as does the drilling of known underlying high-grade mineral extensions on the La Cigarra silver deposit.”
- Golden Goliath Resources Ltd. announced that drilling is to commence at its La Reforma property in the Uruachic district of Chihuahua, by optioner Fresnillo PLC.
ON MINING
- New Gold Inc. presented 2016 production results, including figures from its Cerro San Pedro operations in San Luis Potosi. Cerro San Pedro finished active mining late in the second quarter 2016 and is now into residual leaching. During the year 64,993 Oz Au, 0.2 M Oz Ag were produced at cash cost $1,014 and AISC $1,045 per gold ounce. For 2017, Cerro San Pedro is expected to produce 35 -45 K Oz Au on its first year of residual leaching.
- Americas Silver Corp. released production results for 2016, and guidance for 2017. At the Cosalá operations 500.5 K tonnes were milled @ 78 g/t, to produce 1 M Oz Ag, 10.5 M Lb Zn, 4.2 M Lb Pb, 1 M Lb Cu. At cash cost $7.79 and AISC $9.31 per silver ounce. The first exploration budget in four years envisages $2 M on targets at the San Rafael/El Cajón corridor and at the San Rafael 120 Zone. The construction of the San Rafael project began on late 2016, and is to be operational by the third quarter of 2017. Glencore has facilitated a low interest $15 M concentrate pre-payment to fund a portion of the development costs.
- Gold Resource Corp. voluntarily halted operations at its Arista mine in Oaxaca, after the death of an employee in an accident involving heavy equipment inside the mine. “This accident follows a recent unrelated fatality of a worker employed by a narrow-vein mine contractor at the Arista Mine as a result of a ground fall event. The Company and the contractor immediately notified governmental authorities following the first accident, and the authorities’ initial investigation concluded there was no wrong-doing on the part of the Company or the worker.”
- Excellon Resources Inc. presented 2016 production results for 2016 from its Platosa mine in Durango, where 53.2 K tonnes were mined and 55.6 K tonnes were milled @ 456 g/t Ag, 4.4% Pb, 5.7% Zn with recoveries of 90.5% Ag, 82.1% Pb, 80.2% Zn to produce 752.7 K Oz Ag, 4.43 M Lb Pb, 5.58 M Lb Zn. A water management system comprising a primary booster station and a couple more pumps is being implemented to create a “depression cone” that permits dry mining conditions. The system was successfully tested in the last quarter of 2016, and is expected to be fully operational on the second quarter of 2017.
- Gold Resource Corp. announced additional step-out intercepts of the Switchback vein system at its Arista mine in Oaxaca. The two drill results released include 5.01 m @ 4 g/t Au, 66 g/t Ag, 0.5% Cu, 4.3% Pb, 5.9% Zn; 1.88 m @ 5.88 g/t Au, 63 g/t Ag, 0.9% Cu, 2.5% Pb, 7.9% Zn. The Switchback system now extends for 575 m along strike, 275 m more than at January 1st , 2017.
ON FINANCING
- Alix Resources Corp. arranged a non-brokered private placement for aggregate gross proceeds of $250 (Elektra, Sonora).
- Aura Silver Resources Inc. closed the second and final tranche of its non-brokered private placement for gross proceeds of $500 K in both tranches (Taviche, Oaxaca).
- Almadex Minerals Ltd. announced a proposed non-brokered private placement to raise approximately $2 M (El Cobre, Veracruz).
ON RESOURCES AND DEVELOPMENT.
- Excellon Resources Inc. released results from its surface and underground exploration program at its Platosa mine in Durango. To date 5,400 m have been completed from the 26,000 m program initiated on Q3 2016, focused on defining additional shallow mineralization near existing infrastructure. Intercepts include 2.4 m @ 686 g/t Ag, 4.7% Pb, 6.2 % Zn; 2.0 m @ 504 g/t Ag, 4.3% Pb, 7.1% Zn; 1.2 m @ 843 g/t Ag, 0.4% Pb; 3.0 m @ 795 g/t Ag, 9.2% Pb, 25.8% Zn.
ON DEALS AND CORPORATE ISSUES
- Riverside Resources Inc. signed two agreements, consolidating the La Cecilia (formerly Cerro Magallanes) project in Sonora. Riverside signed an option to purchase agreement to acquire 100% interest in the three Cecilia-Margarita concessions from Gunpoint Exploration Ltd., with the following payment schedule: $10 K on signature, $15 K and 100 K Riverside shares on the filing of the agreement, $25 K and 200 K on the first anniversary, $75 K and 300 K shares on the third anniversary and $125 K and 400 K shares on the third anniversary. Additionally, Riverside purchased the Violeta concession from Millrock Resources Inc. for C$10 K and 100 K Riverside shares and a 0.5% NSR. The La Cecilia project comprises a felsic volcanic edifice/dome and numerous felsic dikes cutting through a Mesozoic sedimentary sequence. A low sulfidation epithermal system developed on the complex volcanic center, with gold related to structures and breccias and strong alteration. There are several target areas in the project, some of which have seen drilling by past operators with intercepts of up to 1.4 g/t Au over 30 m.
- Arian Silver Corp. announced the sale of the Calicanto property in Zacatecas is now complete, having received the final US$400 K + IVA (VAT).
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 below, quartz vein float in central Chihuahua, displaying lattice calcite replaced by silica, evidence for boiling in a low sulfidation epithermal system.

Highlights on the Third Week of January, 2017. Mineral Exploration in Mexico
During the 3rd week of the year (16th to 22nd January, 2017) at least 28 press releases were announced by companies working in Mexico, including six preliminary production reports for 2016. ON EXPLORATION, five companies presented exploration updates. In Sonora exciting high grade gold results from a drilling campaign were announced, also in Sonora another company is defining a zoned porphyry copper alteration center. In Durango the results for the first holes of a large campaign are being received, with some mineralization to show. In Zacatecas a more than 50 m long interval of core shows brecciation, quartz veining and presence of sulfides, in a step-out hole targeting a Ag-Pb-Zn vein, results are pending. In Coahuila work was done during 2016 to define steep structures that could define high grade orebodies. ON MINING, McEwen Mining, Argonaut Gold, Avino Silver, First Majestic, Sierra Metals and Primero Mining presented preliminary fourth quarter and full-year 2016 production figures, and Capstone presented its operational and capital guidance for 2017. ON FINANCING, One company reported the closing of the first tranche of a non-brokered private financing for $209 K. ON RESOURCES AND DEVELOPMENT, one company reported updated resource estimates for its three mines in Mexico. Another company presented infill and exploration drilling results on its advanced project in Puebla, while one other company presented a PEA on a copper-gold property. A Mexican company boasts the largest manganese reserves in North America. ON DEALS AND CORPORATE ISSUES, a JV has been formed in a silver discovery in Durango; a company with a project in Sinaloa has been approved to list on the NYSE and a property in Sonora has been acquired to bring it into production by a JV.
ON EXPLORATION
- Evrim Resources Corp. announced initial drill results from its Ermitaño project in Sonora provided by its exploration partner First Majestic Silver Corp. Results for four holes have been received, of a 947 meters drill program, including 18 m @ 11.4 g/t Au, 86 g/t Ag (including 3.3 m @ 34.6 g/t Au, 242 g/t Ag); 9.6 m @ 1.8 g/t Au, 24 g/t Ag; 13.2 m @ 1.1 g/t Au, 29 g/t Ag; 8.8 m @ 0.8 g/t Au. “The Ermitaño West zone …. consists of a network of low to intermediate sulphidation east-west trending epithermal veins and stockwork. The veining covers an area 1,200 metres long by 600 metres wide”.
- Silver Bull Resources Inc. presented a review of work done in 2016 at its Sierra Mojada property in Coahuila. The company completed a 590 line kilometer airborne magnetic geophysical survey, defining several deep structures coincident with old high grade silver and zinc mines, and some high grade intercepts on drilling. Drilling of 1,400 m on the fourth quarter, 2016, is to be followed by 1,400 m of drilling in the first quarter, 2017. Besides the silver mineralization, Silver Bull previously defined a measured and indicated resource of zinc oxide mineralization of 10 M tonnes @ 11% Zn. During 2017 the plan is to refine the metallurgy, needed for a preliminary economic assessment.
- Canasil Resources Inc. has completed the first hole of its current drilling campaign at its La Esperanza project in Zacatecas. This hole intersected an extended interval from 345 to 391 meters downhole, carrying banded quartz vein, veinlets and breccias hosted within volcanic rocks. Core is being logged and prepared for assaying; sphalerite, galena and chalcopyrite have been noted. The drill program is planned for 1,500 – 2,000 m of core drilling in four or five holes.
- San Marco Resources Inc. announced that geologic traverses, prospecting and rock chip sampling identified porphyritic intrusions along the NE contact of a batholith in target #1068 of its partnership with Globetrotters. Preliminary geologic mapping indicates a large zoned alteration system with a potassic (biotite-magnetite) core and a large phyllic (quartz-sericite) envelope.
- Southern Silver Exploration Corp. reported results from two holes of its 10,000 m drilling campaign at Cerro Las Minitas, Durango. The best intercept was 14.8 true width @ 39 g/t Ag, 0.1% Pb, 10.2% Zn. A second rig is being mobilized to the site to speed-up the program.
ON MINING
- McEwen Mining Inc. presented production results for 2016, which includes 55,266 AuEq Oz produced at its El Gallo mine in Sinaloa. At the end of the year the company has no debts and $36 M in cash, $21 M in precious metals and $7 M in marketable securities.
- Capstone Mining Corp. presented its operational and capital guidance for 2017. At Cozamin in Zacatecas, milled tonnes are expected to be lower, but at higher grade than in 2016, with 80% of ore coming from the narrow veined Mala Noche Footwall zone. “All-in cost includes the development costs reflective of the move from the main zone to the footwall zone.” During the year the potential to bring the existing zinc resource into the mine plan will be evaluated. The exploration budget for Cozamin is $5 M, which includes 30,000 m of primarily underground infill drilling aimed at increasing reserves.
- Argonaut Gold Inc. presented production figures for the fourth quarter and full year 2016. In the fourth quarter, at El Castillo in Durango 16,747 AuEq Oz were produced, and 17,637 AuEq Oz at La Colorada in Sonora. During 2016 El Castillo and La Colorada produced 62,766 and 59,331 AuEq Oz respectively, for a total of 122,097 AuEq Oz. At year end the company had $42 M in cash and $30 M available on an undrawn corporate revolver. For 2017 the company aims to produce 70-80 K AuEq Oz and 45-50 K AuEq Oz at El Castillo/San Agustin Complex and La Colorada respectively, at consolidated cash cost $675-$725 and AISC $910-$960.
- Avino Silver & Gold Mines Ltd. reported fourth quarter and full year 2016 production results from its Avino property in Durango. The consolidated production for the year was 1.612 M Oz Ag, 7,119 Oz Au and 4.2 M Lb Cu, for a total of 2.679 M Oz AgEq. During the fourth quarter 2016, at the Avino mine 101.6 K tonnes were milled @ 65 g/t Ag, 0.69 g/t Au, 0.37% Cu, with recoveries of 85% Ag, 69% Au and 91% Cu, producing 179.5 K Oz Ag, 1,540 Oz Au, 755,645 Lb Cu; while at the San Gonzalo mine 33.5 K tonnes were milled @ 262 g/t Ag, 1.16 g/t Au with recoveries of 85% Ag, 83% Au, producing 239.8 K Oz Ag, 1,041 Oz Au.
- First Majestic Silver Corp. presented production results for the full year and the fourth quarter 2016. During the period a total of 11.9 M Oz Ag, 62,436 Oz Au, 33.2 M Lb Pb and 10.6 M Lb Zn were produced. During the fourth quarter production in First Majestic’s five mines was as follows: At Santa Elena in Sonora, 257.8 K tonnes were processed (2,802 tpd) @ 89 g/t Ag (89% recovery) to produce 660.2 K Oz Ag, 11,430 Oz Au. At La Encantada in Coahuila, 235 K tonnes were processed (2,555 tpd) @ 132 g/t Ag (57% recovery) to produce 567.9 K Oz Ag, 22 Oz Au. At La Parrilla, Durango, 153.3 K tonnes were processed (1,666 tpd) @ 130 g/t Ag (78% recovery) to produce 497.4 K Oz Ag, 260 Oz Au, 1.85 M Lb Pb, 1.19 M Lb Zn. At Del Toro in Zacatecas, 82.7 K tonnes were processed (900 tpd) @ 157 g/t Ag (82% recovery) to produce 343.9 K Oz Ag, 70 Oz Au, 5.83 M Lb Pb. At San Martin, in Jalisco, 76.8 K tonnes were processed (835 tpd) @ 254 g/t Ag (81% recovery) to produce 510.4 K Oz Ag, 888 Oz Au. At La Guitarra in Mexico State, 38.4 k tonnes were processed (418 tpd) @ 246 g/t Ag (79% recovery) to produce 239.8 K Oz Ag, 2,073 Oz Au. The company aims to have an AISC $11.96 to $12.88 per silver ounce in 2017.
- Sierra Metals Inc. reported fourth quarter and full year 2016 production results, which includes figures on its Mexican operations. At Bolivar, in Chihuahua, 950.4 K tonnes were processed (2,715 tpd) @ 1.0% Cu, 16.7 g/t Ag, 0.19 g/t Au (recoveries of 81.7% Cu, 77.8% Ag, 50.5% Au) to produce 17.1 M Lb Cu, 440 K Oz Ag, 2,986 Oz Au. At Cusi, in Chihuahua, 186.9 K tonnes were processed (534 tpd) @ 171.8 g/t Ag, 0.26 g/t Au, 1.2% Pb, 1.1% Zn (recoveries of 71.7% Ag, 61.8% Au, 82.2% Pb, 37.7% Zn) to produce 740 K Oz Ag, 954 Oz Au, 4.1 M Lb Pb, 1.8 M Lb Zn. For 2017 Sierra Metals is aiming to produce with cash cost $1.08 and AISC $1.74 per copper equivalent pound at Bolivar, and cash cost $10.9, AISC $19.66 per silver equivalent ounce at Cusi.
- Primero Mining Corp. released preliminary fourth quarter and full year 2016 results, which includes figures on its Mexican operations. At San Dimas, in Durango, 28,282 Oz Au were produced in the fourth quarter; to achieve 113,968 Oz Au on the full year, at cash cost $856 and AISC $1,117 per gold equivalent ounce.
ON FINANCING
- Aura Silver Resources Inc. has closed the first tranche of its non-brokered private placement, for gross proceeds of $209 K (Taviche, Oaxaca).
ON RESOURCES AND DEVELOPMENT
- Endeavour Silver Corp. reported updated NI-43-101 gold and silver resource estimates for its three operating mines in Mexico, and restated the resource estimates for its exploration properties. On its Guanceví (Durango), Bolañitos (Guanajuato), El Cubo (Guanajuato), Terronera (Jalisco) and Guadalupe y Calvo (Chihuahua) properties, consolidated silver-gold proven and probable reserves amount to 10.55 M Oz Ag, 91,100 Oz Au; measured and Indicated resources to 59.14 M Oz Ag, 483,400 Oz Au and inferred resources to 32.41 M Oz Ag, 296,600 Oz Au. On its Guanaceví (Durango) and Parral (Chihuahua) properties, consolidated silver-gold-lead-zinc indicated resources amount to 5.01 M Oz Ag, 50,300 Oz Au and inferred resources to 4.73 M Oz Ag, 39,400 Oz Au.
- Almaden Minerals Ltd. released assay results from its exploration and development program at its Tuligtic project in Puebla. Results include intercepts like 8 .8 m @ 1.1 g/t Au, 51 g/t Ag; 34.2 m @ 1.1 g/t Au, 72 g/t Ag; 96 m @ 0.3 g/t Au, 41 g/t Ag; 38.6 m @ 1.1 g/t Au, 106 g/t Ag; 32.6 m @ 1.4 g/t Au, 44 g/t Ag; 105 m @ 1.2 g/t Au, 87 g/t Ag. Those intercepts confirm the existence of additional zones of veining immediately adjacent to the Ixtaca zone.
- Geologix Explorations Inc. announced the results of a preliminary economic assessment (PEA) report on its Tepal gold/copper project in Michoacan. According to the report (using prices of $1,250/Oz Au, $2.50/Lb Cu and $18 Oz Ag), with a strip ratio of 0.6 : 1 and a mine life of 9.8 years to process 142.9 M tonnes @ 0.33 g/t Au for oxide ore and 0.45 g/t Au, 0.21% Cu for sulfide ore, the mine would produce 766 K Oz Au and 308 M Lb Cu at a rate of 78,572 Oz Au and 31.6 M Lb Cu per year, life of mine average (LOM). Capital requirements are $214 M for pre-production, $86.7 M for LOM sustaining and closure; LOM cash cost calculated at $313 and AISC $ 396 per gold equivalent ounce.
- Mexus Gold US informed that ore is currently being loaded on the heap leach pad at its Santa Elena mine in Sonora. A larger crusher is being moved to the site to speed up the operation. Setup and install of the Merril Crowe recovery plant is now complete.
- Compañía Minera Autlán S.A.B. d C.V. has the largest ore reserves of metallurgical grade manganese in North America, amounting to 250 M tonnes of ore (no grade specified). The Molango district in Hidalgo covers 1,250 square kilometers, and according to the USGS de most important deposits of metallurgical grade manganese in North America are in this area.
ON DEALS AND CORPORATE ISSUES
- Orex Minerals Inc. has earned 55% ownership interest in the Sandra Escobar project in Durango, by paying Canasil Resources Inc. CAD $500 K and spending more than USD $2 M in exploration at the 6,976 has project. A joint venture has been formed; same that will be managed by a joint committee. Orex had the option to earn an additional 10% by paying $500 K to Canasil, and spending further $2 M on the project, Orex has notified Canasil that it will not proceed with the second option.
- Americas Silver Corp. has been approved to list on the NYSE MKT stock exchange (Cosalá, Sinaloa).
- Mexus Gold US. acquired the mining concessions comprising the San Felix property in Sonora, for undisclosed payments and terms. The Company also announces the execution of an agreement with MarMar Holdings Inc. whereby each company owns a 50% share of the San Felix Project and designates MarMar as the operator.
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 below, orogenic gold quartz vein fragment recovered by a gambusino from a placer in the Ojos Negros district, Baja California. The fragment is about two centimeters long.

Highlights on the Second Week of November 2016, Mineral Exploration in Mexico
During the second week of November, at least 27 press releases were published by companies working in Mexico, including several quarterly financial reports. ON EXPLORATION, a new round of drilling started in two Durango projects, while another company published high-grade drilling results and the exploration for extensions to defined orebodies, also in Durango. In Sonora one company is exploring a new porphyry copper target and also a new high sulfidation epithermal target. Assay results were disclosed for a drill hole in Veracruz, with continuous low-grade Cu-Au mineralization for hundreds of meters. In Sonora, step-out drilling exploration is finding extensions and peripheral mineralization in two high sulfidation epithermal projects. Also in Sonora, the resource conversion in a lithium property has been completed, and work focus in the Feasibility Study. A drill program is to start on another lithium property in Sonora. ON MINING, ten companies reported third quarter results, with operations in Baja California, Sonora, Sinaloa, Coahuila, Durango, Jalisco, San Luis Potosi, Mexico State, Oaxaca and Zacatecas. Pilot scale mining continues on a Sinaloa project, and a mine commenced commercial production in Zacatecas. ON FINANCING, one company issued shares for $150 K to settle debt; another closed a non-brokered private placement for $400 K; and one other received $642 K from the exercise of warrants. One company entered into an agreement with a syndicate of underwriters for $20 M. ON DEALS AND CORPORATE ISSUES, two companies entered into an option agreement for 50% of a property in Durango, while two other companies agreed an option and JV agreement for 49% of a lithium property in Sonora.
ON EXPLORATION
- Orex Minerals Inc. has started a new round of diamond drilling on the Sandra Escobar project in Durango; two rigs will drill 4,000 m in 10 to 15 holes. Results from the last holes of the past campaign were released, and include 10.89 m true width (TW) @ 55 g/t Ag, on the Puma ridge zone, 250 m southwest from the Main Zone.
- HECLA Mining Corp. updated exploration work at its San Sebastian mine in Durango, where focus was in defining extensions to the current Middle and North veins pits. Drilling of the West Middle vein, 350 m form the Middle vein pit has defined a high grade zone of mineralization more than 375 m in length, between 100 and 240 m below the surface. Intercepts include 2.6 m @ 7.4 g/t Au, 1,558 g/t Ag and 0.8 m @ 18.6 g/t Au, 4,643 g/t Ag. Drilling continues at extensions of the East Francine vein over 240 m of length at 1.2 – 4.5 m widths and the West Francine vein over 480 m of length and 0.6 – 4.8 m widths.
- Orex Minerals Inc. announced that its project partner Fresnillo PLC has commenced a 5,000 m Phase-V diamond drill program in 11 holes at its Coneto property in Durango. The new drilling will cover La Bufa, Santo Niño, Reliz, Loma Verde, Descubridora, Durazno, Impulsora and Promontorio veins.
- Minaurum Gold Inc. identified a new bulk-tonnage target at La Quintera silver property in Sonora. “The Minas Nuevas bulk-tonnage target has a strike length of 700 meters and is 25 meters wide…….. Mineralized stockwork quartz veining surrounding the old workings exhibits the potential for bulk-tonnage silver mineralization”.
- San Marco Resources Inc. has found typical porphyry copper zoned alteration of a quartz diorite porphyry with copper and molybdenite mineralization in Sonora. Another target hosts a high sulfidation epithermal system in volcanic and volcanoclastic rocks with advanced argillic alteration. Dacite breccias and pyroclastics show quartz/alunite alteration and vuggy silica areas.
- Almadex Minerals Ltd. disclosed results from its last hole on the Norte Zone at its El Cobre project in Veracruz, with 414 m @ 0.11% Cu and 0.16 g/t Au, including 74.5 m @ 0.19% Cu and 0.38 g/t Au. The company will now test a new zone interpreted as the intrusive core of the porphyry system, supported by a chargeability anomaly. The four copper-gold porphyry targets currently known are: Encinal, El Porvenir, Norte and Villa Rica. The largest target area is the Villa Rica zone which has not been drill tested.
- Alamos Gold Inc. released results from its exploration in Sonora. At La Yaqui 9,055 m of drilling have been completed since the October interim resource update and additional 5,000 to 6,000 m is planned for the current quarter. New infill drilling intercepts include 76 m @ 4.37 g/t Au, 76.8 m @ 3.17 g/t Au and 61.8 m @ 1.1 g/t Au. At Cerro Pelon exploration now includes a much larger area to be systematically explored. Twenty holes were completed for 5,692 m of drilling, with structures, vuggy silica and advanced argillic alteration intersected over a broad area.
- Bacanora Minerals Ltd. is realizing multiple activities with the aim to complete the definitive Feasibility Study (“FS”) on its Sonora lithium project. The infill drilling program to upgrade the resource classification has been completed. The average thickness for the Upper Clay Unit is 30.7 m @ 1,791 ppm Li, and for the Lower Clay Unit 20.7 m @ 4,345 ppm Li.
- Alix Resources Corp. is to initiate a drill program with JV partner Lithium Australia NL in the Agua Fria site, at its Elektra project in Sonora (adjacent to Bacanora’s property).
ON MINING
- Unitated States Antimony Corp. produced 274.5 K pounds of antimony during October. “Testing of the Los Juarez caustic leach circuit in Coahuila that is designed to recover contaminants from the floatation concentrates has proven successful and is ready for Los Juarez concentrates when the cyanide leach circuit has been approved at Puerto Blanco, Guanajuato”.
- Fortuna Silver Mines Ltd. reported financial results for the third quarter of 2016, during which 1.78 M Oz Ag and 13,951 Oz Au were produced at its San Jose mine in Oaxaca. During the period 268.2 K tonnes of ore were milled at a 3,056 tpd rate, and average grade of 224 g/t Ag and 1.76 g/t Au; obtaining recoveries of 92% for both. The all-in sustaining cost was $6.94 per silver ounce, net of by-product credits from gold, lead and zinc. Cash and cash equivalents stood at $103.2 M.
- HECLA Mining Co. released third quarter 2016 results, which include 40 K tonnes of ore processed at a grade of 801 g/T Ag, 6.7 g/t Au, for a total production of 975.6 K Oz Ag and 8,189 Oz Au at its San Sebastian mine in Durango. Total cash cost, net of by-product credits was $(4.03) per silver ounce.
- First Majestic Silver Corp. released third quarter 2016 results from its six mines in Mexico: Santa Elena in Sonora, La Encantada in Coahuila, La Parrilla in Durango, Del Toro in Zacatecas, San Martin in Jalisco and La Guitarra in Mexico State. Over 838 K tonnes of ore were processed to produce 3.1 M Oz Ag , or 4.5 M Oz AgEq at cash cost of $5.84 per ounce and all-in sustaining cost of $10.52 per ounce.
- Primero Mining Corp. reported third quarter 2016 results, which include information on its Mexican operations. The San Dimas mine in Durango produced 28,454 Oz AuEq Oz (22,162 Oz Au, 1.37 M Oz Ag) during the period (almost half of Q3 2015) at a cash cost of $887 per AuEq Oz. Production was impacted by labor disruptions and lower than planned grades. Mine output was 2,012 tpd with grades averaging 3.69 g/t Au, 232 g/t Ag.
- Avino Silver & Gold Mines Ltd. announced third quarter 2016 financial results, which includes production numbers from its Avino mine, cash and cash equivalents stood at $15 M.
- Dyna Resource Inc. processed 4,550 tons at its San Jose de Gracia pilot mill in Sinaloa, at an average grade of 11.39 g/t Au, and a rate of 177 tonnes per day.
- Alamos Gold Inc. reported its financial results for the third quarter 2016, including numbers from its Mexican operations. At Mulatos and El Chanate mines in Sonora, 38,500 Oz Au and 16,942 Oz Au were produced respectively, with cash cost of $888 per Oz and AISC of $965 per Au Oz in Mulatos; and cash cost of $1,045 per Oz and AISC of $1,062 per Au Oz at El Chante. At Mulatos 2.05 M tonnes of ore were mined, and 2.04 M tonnes of waste moved (strip ratio 0.99), and 1.57 M tonnes were placed on the heap @ 0.82 g/t Au; 28 K tonnes were mined from underground, and 38.3 K tonnes milled @ 9.8 g/t Au, operating at 17,500 tpd, and overall recovery rates of 72%. At El Chanate 1.75 M tonnes of ore were mined, 5.75 M tonnes of waste moved (strip ratio 3.27), 1.7 M tonnes of ore @ 0.61 g/t Au staked on the heap, operating at 18,400 tpd and recovery rates of 51%. Cash and cash equivalents totaled $287 M at the end of the period.
- Sandstorm Gold Ltd. released results for the third quarter 2016. The streaming royalty company receives revenue from 21 producing assets, including from First Majestic’s Santa Elena mine in Sonora. Total revenue was $16.8 M, or 12,588 Oz AuEq.
- Santacruz Silver Mining Ltd. reported operating results from its Rosario mine in San Luis Potosi, and commencement of operations at its Veta Grande mine in Zacatecas. At the Rosario mine, 24.7 K tonnes of ore from several veins averaged 252 g/t AgEq (0.16 g/t Au, 101 g/t Ag, 0.5% Pb, 3.5% Zn), with recovery rates of 66.4%, 94.2%, 88.5% and 72.9% respectively for gold, silver, lead and zinc, to produce 164.9 K Oz AgEq. At Veta Grande mine, commercial production was declared after achieving 395 tpd in the mill, which is 80% of capacity, with 80% recoveries.
- Mag Silver Corp. announced third quarter 2016 financial results. At the end of the period the company had working capital of $140.9 M.
- Aura Minerals Inc. released financial and operational results (standstill Aranzazu mine in Zacatecas).
- Oddisey Marine ExplorationInc. reported third quarter 2016 results. The company is waiting the environmental permit to be approved, performing offshore services in the meantime to obtain total revenue of $2.9 M for the period.
ON FINANCING
- Alset Energy Corp. announced it will be settling up to $153.2 K of debt by issuing shares to a company’s creditor (various lithium properties, San Luis Potosi and Zacatecas).
- Colibri Resource Corp. closed a private non-brokered private placement for gross proceeds of $400 K (Evelyn property, Sonora).
- San Marco Resources Inc. received $642 K from the exercise of warrants.
- Timmins Gold Corp. entered into an agreement with a syndicate of underwriters for gross proceeds of approximately C$20 M (Ana Paula project, Guerrero).
ON DEALS AND CORPORATE ISSUES
- Firma Holdings Corp. announced that through its subsidiary GracePoint Mining Corp. it has entered into a binding option agreement with Hawkeye Gold and Diamond Inc. to acquire a 50% interest in its Cobriza Grouping project, in Durango. The terms include payments of US $4.5 M, with US$3.8 M going to the project and US $700 K going to GracePoint.
- Alix Resources Corp. and Lithium Australia NL (LIT). Entered into an option and JV agreement under which LIT can earn 49% interest in the Elektra project by issuing 500 K shares to Alix, issuing 500 K partly paid shares and expending further A$250 K within 12 months of signing.
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 below, advanced argillic alteration on a high sulfidation prospect in the Trans-Mexican Volcanic Belt. Geologist Ruben Padilla checking the outcrop.

