Mineral Resource Estimate

The Mining and Exploration News in Mexico: Highlights on the First Week of November, 2025

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Quartz Vein hosted in volcanic rocks

By Miguel A Heredia

During the 45th week of the year (November 3rd to November 9th 2025), at least 33 press releases were announced by companies working in Mexico, with thirteen disclosing deals and corporate issues, eight communicating mining and production issues, five announcing financial rounds, four informing on exploration results, and three reporting resources and developments of their properties. ON MEXICO ISSUES, No relevant news. ON EXPLORATION, In Sonora, Colibri retained CANMEX to conduct its next phase of drilling at the EP project, and Kenadyr provided an update on its Adelita copper-gold-silver project. In Chihuahua, Advance Metals confirmed high grade silver-gold in previously unsampled core at its Yoquivo project. In Sinaloa, Mithril provided exploration results and an update for multiple targets at its Copalquin project. ON MINING, Santacruz Silver reported consolidated production results for the period Q3, 2025 and year to date (Zimapan mine, Hidalgo). First Majestic reported Q3, 2025 production and financial results from its Mexican mine operations. Aura Minerals presented Q3, 2025 consolidated production and financial results, including figures from its Aranzazu mine in Zacatecas. Gold Resource released Q3, 2025 production and financial results from its Don David Gold mine in Oaxaca. Torex Gold announced Q3, 2025 production and financial results from its Morelos complex in Guerrero. Gold Royalty released Q3, 2025 consolidated financial results (royalty on Cozamin mine, Zacatecas). Avino Silver & Gold presented Q3, 2025 production and financial results from its Avino mine in Durango. Endeavour Silver announced Q3, 2025 consolidated production and financial results, including its Guanacevi and Bolañitos mines in Durango and Guanajuato respectively.  ON FINANCING, Colibri closed a first tranche of its previously announced non-brokered private placement for gross proceeds of CAD $1,350,722, and a second tranche for gross proceeds of CAD $140,980 (EP project, Sonora). Kingsmen announced a non-brokered private placement for gross proceeds of up to CAD $3,003,750 (Las Coloradas project, Chihuahua). Silver Storm declared that it has fully drawn USD $7.0M under the previously announced Prepaid Offtake Financing Facility with Samsung (La Parrilla mine, Durango). Oroco closed a first tranche of its non-brokered private placement announced on September 24, 2025 for gross proceeds of USD $1,530,999 (Santo Tomas project, Sinaloa).  ON RESOURCES AND DEVELOPMENT, Goldgroup filed an updated NI43-101 technical report on its Cerro Prieto gold mine in Sonora. Silver Tiger announced the receipt of all required approvals and permits to construct the El Tigre Stockwork Silver-Gold project in Sonora. Heliostar released a Preliminary Economic Assessment (PEA) for its Ana Paula underground gold project in Guerrero. ON DEALS AND CORPORATE ISSUES, Osisko Development announced the appointment of Scott Smith as Vice President, Exploration (San Antonio Gold project, Sonora). Mithril reported voting results of its annual general meeting of shareholders (Copalquin project, Durango). Elemental Altus announced that shareholders have overwhelmingly approved all resolutions at its special meeting (Royalty on Mercedes mine, Sonora). Aura Minerals declared dividend based on Q3, 2025 results (Aranzazu mine, Zacatecas).  Orogen granted stock options to directors, officers, employees, and consultants (Ermitaño mine, Sonora). Torex announced its initial return of capital program, which includes a quarterly dividend of CAD $0.15 per share and discretionary share repurchases through its normal course issuer bid (El Limon Guajes and Media Luna properties, Guerrero). Almadex provided an overview of its diversified portfolio of royalties on precious and base metal projects throughout North America. Silver Viper entered into two independent agreements to support ongoing digital marketing and trading-liquidity efforts (La Virginia project, Sonora). Mammoth announced the appointment of three new directors to strengthen its leadership team (Tenoriba project, Chihuahua). Royalties Inc reported that it won a major court battle in the Civil Chamber of the Superior Tribunal of Justice of Zacatecas against Capstone. Apollo Silver announced that the US Department of Interior added silver to the 2025 list of critical minerals. Inomin granted stock options to directors and two advisers of the company. Silver Viper entered into a capital market consulting agreement with Insight Capital Partners (La Virginia project, Sonora).  ON SOCIAL RESPONSIBILITY, No relevant news.

ON MEXICO ISSUES

  • No relevant news.

ON EXPLORATION

  • Colibri Resource Corporation retained CANMEX Perforaciones y Servicios SA de CV to conduct its next phase of drilling at the EP project in Sonora. The program will be focused on the undrilled San Perfecto and Banco de Oro target areas.
  • Kenadyr Metals Corp., provided an update on its Adelita copper-gold-silver project in Sonora. The company is preparing to commence Phase 1 exploration activities, including drilling and detailed geophysical surveys at the Cerro Grande skarn zone, following receipt of all necessary permits, including a 20-year mining license. The deal with Infinitum Copper (80%) and Minaurum Gold (20%) is basically done; just waiting on final TSXV approval, and financing is almost wrapped up with a last tranche expected soon. Overall, the project is positioned for active exploration with long-term development potential.
  • Advance Metals Limited confirmed high grade silver-gold in previously unsampled core at its Yoquivo project. More than 6,300m of unsampled core in the Pertenencia Zone has been identified, representing greater than 50% of the historic drilling completed. First batch of sample results comprising 222.7m of core across 11 holes in the southern portion of Pertenencia Zone has confirmed the untested potential, returning grades of up to 370g/t Ag & 6.2g/t Au. Sampling from holes drilled in 2022 include holes YQ-022-025 with 480 g/t AgEq over 2.05m, including 848 g/t AgEq over 1.1m, and hole YQ-022-002 with 115 g/t AgEq over 4.45m, including 249 g/t AgEq over 0.95m. Multiple additional batches of previously untested core are currently awaiting assay results.
  • Mithril Silver and Gold Limited provided exploration results and an update for multiple targets at its Copalquin project. Target 5 in the southwest area of Copalquin, which is still in the early stages of exploration but showing great promise that could significantly impact the district´s resource potential, returned impressive silver-gold drill intercepts, including a standout hit of 1,714 g/t AgEq over 1m. Drilling highlights include hole AP25-003 with 2.28 g/t Au and 500 g/t Ag (660 g/t AgEq) over 2.75m, including 5.8 g/t Au and 1,308 g/t Ag (1,714 g/t AgEq) over 1m; hole AP25-005 with 1.71 g/t Au and 246 g/t Ag (366 g/t AgEq) over 3.35m, including 5.35 g/t Au and 771 g/t Ag (1,146 g/t AgEq) over 1.05m; and hole AP25-006 with 4.55 g/t Au and 409 g/t Ag (728 g/t AgEq) over 1,25m, plus 2.41 g/t Au and 447 g/t Ag (616 g/t AgEq) over 0.90m, plus 1.51 g/t Au and 321 g/T AgEq) over 0.80m. To date, 13 drilled holes have been completed at Target 5 with assay results received for the first eight holes. On the other hand, channel sampling at Tasolera mine returned high grade results, including 2 g/t Au and 3,300 g/t Ag (3,440 g/t AgEq) over 1.4m. This target is

rapidly emerging as a major silver zone. Only around 5% of the related vein system has been tested so far, meaning there´s plenty more ground to cover. Ongoing exploration mapping and channel sampling is on progress to expand its footprint. At Target 3, preparations are underway for drilling, supported by ongoing mapping and sampling efforts. This target is a large, highly prospective gold-silver zone with multiple high-grade surface samples and extensive mapped veins. At Target 1 (El Refugio-La Soledad), which hosts the maiden JORC mineral resource estimate,  an ongoing drilling program is underway aiming to expand this existing resources by testing its western extensions and deep zones. At Target 6, new targets, including old workings have been identified with some recent sampling and mapping, indicating potential for future exploration. In general, drilling keeps revealing solid gold-silver mineralization, and the company is moving fast with more holes planned in multiple areas of the district.

ON MINING

  • Santacruz Silver Mining Ltd., reported its consolidated production results for the period Q3, 2025 and year to date (Zimapan mine, Hidalgo). The table below shows figures for the Zimapan mine in Hidalgo:

First Majestic Silver Corp., reported Q3, 2025 production and financial results from its Mexican mine operations. The first table below shows consolidated financial results, and  the second production figures by mine operation:

Aura Minerals Inc., presented Q3, 2025 consolidated production and financial results from its mine operations. The table below shows production and financial results from its Aranzazu mine in Zacatecas:

  • Gold Resource Corporation released Q3, 2025 production and financial results from its Don David Gold mine in Oaxaca. The company milled 65,131 tonnes with grades of 1.11 g/t Au, 250 g/t Ag, 0.16% Cu, 0.6% Pb, and 1.6% Zn to produce 1,646 Oz Au, 453.05K Oz Ag, 73 tonnes Cu, 241 tonnes Pb, and 784 tonnes Zn. Gold Resource sold 1,422 Oz Au, 417.7K Oz Ag (6,298 Oz AuEq), 67 tonnes Cu, 212 tonnes Pb, and 645 tonnes Zn at averages realized prices of USD $3,546/Oz Au, USD $41.39/Oz Ag, USD $9,690/tonne Cu, USD $1,937/tonne Pb, and USD $2,841/tonne Zn. Total cash and all in sustaining cost (AISC) after co-product credits were $2,166 and USD $2,983 per Oz AuEq respectively. It also reported a net loss of USD $4.7M; a working capital of USD $12.8M and cash and cash equivalent of USD $9.8 as of September 30, 2025.
  • Torex Gold Resources Inc., announced Q3, 2025 production and financial results from its Morelos complex in Guerrero (all amounts are expressed in US dollars). The company produced 95,058 Oz Au, 485.2K Oz Ag and 14M Lb Cu or 119,034 payable Oz AuEq  and sold 118,082 oz AuEq at average realized prices of $3,548 Oz Au or $3,536 Oz AuEq. Total cash and all in sustaining costs (AISC) were $1,297 and $1,658 per Oz AuEq respectively. Torex also reported revenue of $416.4M; cost of sales of $207.3M; earnings from mine operations of $209.1M; net income of $114.4M; adjusted net earnings of $103.4M; EBITDA of $235.3M; adjusted EBITDA of $239.3M; net cash generated from operating activities of $186.8M; net cash generated from operating activities before changes in non-cash operating working capital of $204M; free cash flow of $112.5M; cash and cash equivalents of $107.1M; and an available liquidity of  $289M.
  • Gold Royalty Corp., released Q3, 2025 consolidated financial results, including its 1% NSR royalty in Cozamin mine in Zacatecas. “On October 30, 2025, Capstone Copper Corp. reported copper production of 6,145 thousand tonnes of copper at Cozamin in the third quarter 2025, 2% higher than the same period of 2024 as mine sequencing resulted in higher grades. It stated that Cozamin’s copper production is trending towards the upper end of its previously disclosed 2025 production guidance of 23,000 to 26,000 tonnes as well as the lower end of costs. Production is expected by Capstone to be consistently weighted through the year”.
  • Avino Silver & Gold Mines Ltd., presented Q3, 2025 production and financial results from its Avino mine in Durango (All amounts are expressed in US dollars).  The company milled 188,757 tonnes to produce 263.2K Oz Ag, 1,935 Oz Au and 1.31M Lb Cu or 580.8K Oz AgEq and sold 562.6K Oz AgEq at cash and all in sustaining cost (AISC) of $17.09 and $24.06 per Oz AgEq respectively. Avino also reported revenue of $21.04M; mine operating income of $9.9M; net income of $7.7M; EBITDA of $11.46M; adjusted earnings of $11.64M; cash provided by operation activities of $8.33M; mine operating cash flow before taxes of $11.05M; cash of $57.3M; and a working capital of $50.8M.
  • Endeavour Silver Corp., announced Q3, 2025 consolidated production and financial results, including its Guanacevi and Bolañitos mines in Durango and Guanajuato respectively (all currency is expressed in US dollars).  At Guanacevi, Durango, the company processed 99,340 tonnes to produce 1.02M Oz Ag at cash cost of $22.98 per Oz Ag and an AISC of $31.09 per Oz Ag. The company sold 1.28M Oz AgEq. At Bolañitos, Guanajuato, it processed 105,153 tonnes to produce 137K Oz Ag at cash cost of $(11.47) per Oz Ag and AISC of $27.22 per Oz Ag. The company sold 471.2K Oz AgEq.

ON FINANCING

  • Colibri Resource Corporation closed a first tranche of its previously announced non-brokered private placement of 9,004,816 units at a price of CAD $0.15 per unit for gross proceeds of CAD $1,350,722. A second tranche was closed through the sale of 939,867 units at a price of CADS $0.15 per unit for gross proceeds of CAD $140,980. Combined with tranche 1 the company has raised gross proceeds of CAD $1,491,702. Net proceeds will be used to advance exploration at Colibri´s flagship Mexican gold projects, including Pilar and EP projects in Sonora as well as for general working capital.
  • Kingsmen Resources Ltd., announced a non-brokered private placement of up to 2,225,000 units at a price of CAD $1.35 per unit for gross proceeds of up to CAD $3,003,750. The company plans to use the gross proceeds to advance its Las Colorada project in Chihuahua and for working capital.
  • Silver Storm Mining ltd., declared that it has fully drawn USD $7.0M under the previously announced Prepaid Offtake Financing Facility with Samsung C&T Hongkong Ltd. and QSSC, S.A. de C.V.  Silver Storm will use the proceeds for rehabilitation and preparation at its la Parrilla mine in Durango, including mill rehabilitation and upgrading, underground development, and for general corporate and working capital purposes.
  • Oroco Resource Corp., closed a first tranche of its non-brokered private placement announced on September 24, 2025 through the sale of 7,654,995 units at a price of USD $0.2 per unit for gross proceeds of USD $1,530,999. Net proceeds will be used to advance the Santo Tomas project in Sinaloa toward its plan Pre-Feasibility study, and for general corporate purposes. 

ON RESOURCES AND DEVELOPMENT

  • Goldgroup Mining Inc., filed an updated NI43-101 technical report on its Cerro Prieto gold mine in Sonora. The technical report provides independent assessment of the Mineral Resources Estimates at a cut-off grade of 0.2 g/t Au of the Esperanzas Deposit within the Cerro Prieto mine, which includes the La Esperanza and Nueva Esperanza contiguous zones. Measured and indicated resources as of April 4, 2025 are 3.13M tonnes of 0.37 g/t Au for a total of 37.21K Oz Au, while inferred resources are 131.5K tonnes of 0.36 for a total of 1,504 Oz Au.
  • Silver Tiger Metals Inc., announced the receipt of all required approvals and permits from the Mexican Federal Environmental Department (SEMARNAT) to construct the El Tigre Stockwork Silver-Gold project in Sonora. Now, the company is ready to advance the project toward construction.
  • Heliostar Metals Ltd., released a Preliminary Economic Assessment (PEA) for its Ana Paula underground gold project in Guerrero (all amounts are expressed in US dollars). The PEA for Ana Paula outlines a nine-year underground gold mine with an expectation to produce approximately 875K Oz Au over nine years, averaging about 101K Oz Au per year. The project demonstrates strong economics, with a base case post-tax NPV of $426M, and IRR of 28%, and a payback period of about 2.9 years at a gold price of $2,400/Oz. Upside case is $1B and IRR over 50% with quicker payback if gold hits $3,800/Oz. Heliostar is boosting some of the lowest AIUSC (around $1,011/Oz), ranking in the bottom 13% globally. Initial capital costs are estimated at $300M. Heliostar plans to fast-track development, including accelerating completion of the underground decline, ongoing exploration drilling, engineering, permit amendments, and feasibility study, with plans to bring Ana Paula into production in 2028.

ON DEALS AND CORPORATE ISSUES

  • Osisko Development Corp., announced the appointment of Scott Smith as Vice President, Exploration, effective November 1, 2025 (San Antonio Gold project, Sonora).
  • Mithril Silver and Gold Limited reported voting results of its annual general meeting of shareholders (Copalquin project, Durango).
  • Elemental Altus Royalties Corp., announced that shareholders have overwhelmingly approved all resolutions at its special meeting (Royalty on Mercedes mine, Sonora).
  • Aura Minerals Inc., declared dividend of USD $0.48 per common share and USD $0.16 per Brazilian Depositary Receipts based on Q3, 2025 results. The dividend will be paid to shareholders on November 21, 2025 (Aranzazu mine, Zacatecas). 
  • Orogen Royalties Inc., granted 2,000,000 incentive stock options to directors, officers, employees, and consultants. The stock options have a life of five years, an exercise price of CAD $2.2, and will be vest over three years (Ermitaño mine, Sonora).
  • Torex Gold Resources Inc., announced its initial return of capital program, which includes a quarterly dividend of CAD $0.15 per share and have repurchased CAD $7.2M in shares through its normal course issuer bid. The company is prioritizing returning value to shareholders while maintaining investments in growth projects across Mexico and Nevada   (El Limon Guajes and Media Luna properties, Guerrero).
  • Almadex Minerals Ltd., provided an overview of its diversified portfolio of royalties on precious and base metal projects throughout North America. Almadex’s Mexican properties include several royalties across different states, notably in Chihuahua, Veracruz, Oaxaca, and Sinaloa. These assets primarily consist of NSR royalties ranging from 1.5% to 2.0%, covering a mix of gold-silver, copper-gold, and epithermal systems. Royalty interests in Mexico include  La Bufa in Chihuahua (2% NSR / operator: Endeavour Silver Corp), which covers gold-silver mineralization in a prolific silver belt; Caballo Blanco in Veracruz (1.5% NSR operator: Candelaria Mining), a near surface oxide gold-silver deposit with significant exploration potential; El Cobre in Veracruz (1.75% NSR operator: Azucar Minerals Ltd), a large copper-gold porphyry alteration system with multiple mineralized centers; Cerro Colorado in Oaxaca (2% NSR operator: Gold Resource Corp), a near surface oxide gold-silver project close to existing operations; El Encuentro in Sinaloa (2% NSR operator: Mc Ewing Mining Inc), located in a productive gold-silver belt, offering potential for resource expansion; El Fuego in Oaxaca(2% NSR operator: Gold Resource Corp), similar structural setting as other deposits, indicating future development prospects; and Los Venados in Sonora (2% NSR operator: Alamos Mining Inc), prospective for epithermal and porphyry mineralization, acquired recently, and located near operating mines. Overall, these properties give Almadex exposure to a diverse range of mineral systems and districts in Mexico, with several in significant, potentially high-growth areas for precious and base metals.
  • Silver Viper Minerals Corp., entered into two independent agreements to support ongoing digital marketing and trading-liquidity efforts. Nordcore Media LLC will provide digital advertising and online marketing services will receive only cash, while Red Cloud Securities Inc., will use its best efforts to maintain reasonable trading liquidity in Silver Viper´s common shares on the TSX will receive a fixed monthly cash fee (La Virginia project, Sonora).
  • Mammoth Resources Corp., announced the appointment of three new directors: Jose Antonio Berlanga Balderas, Jose Antonio Berlanga Lopez, and Edgardo Espinoza Velasco, and a new CEO, Paul Rozek, to strengthen its leadership team. Mammoth also granted incentive stock options to directors, officers, and contractors to boost ongoing development efforts at its Tenoriba gold-silver project in Chihuahua and other nearby metal production plans.
  • Royalties Inc., reported that it won a major court battle in the Civil Chamber of the Superior Tribunal of Justice of Zacatecas against Capstone, confirming their rights to royalties from a mining contract dating back to 2002. The appellate court in Zacatecas, Mexico upheld the initial ruling that said Capstone and others improperly sold royalties without proper authorization, and now they have to pay legal costs too. The case is officially closed, and the company expects Capstone to cooperate in sorting out the payments owed.
  • Apollo Silver Corp., announced that the US Department of Interior added silver to the 2025 list of critical minerals. This is the first time that silver is recognized as having growing importance to US economic and national security.
  • Inomin Mines Inc., granted 830,000 stock options to directors and two advisers of the company. The options are exercisable until November 7, 2030, at a price of CADS $0.09 per common share and vest immediately.
  • Silver Viper Minerals Corp., entered into a capital market consulting agreement with Insight Capital Partners Inc., to support the company´s capital markets visibility and investor communication efforts. Insight will receive a monthly cash fee of CAD $17,500 plus applicable Harmonized Sales Tax (HST), payable in advance (La Virginia project, Sonora).

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 below, quartz vein hosted in volcanic rocks from an intermediate sulphidation epithermal vein system in Chihuahua, Mexico. Photo taken by Miguel A Heredia.

The Mining and Exploration News in Mexico: Highlights on the Fifth Week of July, 2025

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sigmoidal en-echelon quartz vein

By Miguel A Heredia

During the 31st week of the year (July 28th to August 03rd 2025), at least 36 press releases were announced by companies working in Mexico, with sixteen disclosing deals and corporate issues, nine reporting resources and developments of their properties, five communicating production results, four announcing financing rounds, and two commenting on Mexican issues.  ON MEXICO ISSUES, Almaden provided an update on its arbitration with Mexico under the Comprehensive Progressive Agreement for Trans-Pacific Partnership (CPTPP) because of actions that led to the loss of their Ixtaca project investment in Puebla. Impact Silver, Guanajuato Silver and Gold Resource reported the best drilling intercepts in Mexico on the fifth week of July, 2025.  ON EXPLORATION, no relevant news.  ON MINING, Americas Gold and Silver reported Q2, 2025 consolidated results (Cosala min, Sinaloa). Santacruz Silver Mining announced Q2, 2025 production results from its Zimapan mine in Hidalgo. Alamos Gold presented Q2, 2025 production and financial results from its Mulatos mine in Sonora. Starcore reported year end 2025 results from its San Martin mine in Queretaro. Agnico presented Q2, 2025 production results from its Pinos Altos mine in Chihuahua). ON FINANCING, GR Silver announced a CAD $12M bought deal LIFE offering of units (Plomosas project, Sinaloa).  Masivo declared that is expects to close a CAD $1.2M funded round by Mid-August, 2025 (Cerro Colorado project, Sonora). Southern Silver closed its previously announced bought deal LIFE private placement for gross proceeds of CAD $15M (Cerro Las Minitas project, Durango). Sierra Madre closed the second and final tranche of its previously announced non-brokered private placement for gross proceeds of USD $1,750,000 (Guitarra mine, Estado de Mexico). ON RESOURCES AND DEVELOPMENT, Impact Silver released underground drill results from the Santo Domingo Zone at its Plomosas mine in Chihuahua. Guanajuato Silver announced high-grade gold intercepts at its Valenciana mine complex in Guanajuato. Agnico advanced in Q2, 2025 its Feasibility Study on San Nicolas project, Zacatecas, which remains in schedule to be completed by year-end. Tocvan received permit for all drilling and extraction to advance pilot mine development at its Gran Pilar project in Sonora. Kootenay finalized its first mineral resource estimate for the Columba Project in Chihuahua. Mithril Silver and Gold reported significant high-grade results from channel sampling at its Copalquin property in Durango. Vizsla Silver and Vizsla Royalties completed a regional HLEM geophysical survey and initial fieldwork across its Panuco district and newly acquired Santa Fe property in Sinaloa to identify new high-grade mineralization targets. Gold Resource released H1, 2025 drill results from its Don David gold mine in Oaxaca and reported operational improvements. ON DEALS AND CORPORATE ISSUES, Goldgroup announced that its common shares will commence trading on OTCQX under the symbol “GGAZF” (Cerro Prieto mine, Sonora). Silver Viper granted incentive stock options to directors, officers, and consultants (La Virginia project, Sonora). Sierra Madre announced that it has granted stock options to employees of La Guitarra Compañia Minera, certain directors, management, and consultants (La Guitarra mine, Estado de Mexico).Xali Gold provided an update on their Mexican projects (Sarape project, Sonora and El Oro, Estado de México).  Guanajuato Silver announced the appointment of Rick Trotman as its Senior Vice President and granted stock options to officers and employees of the company (El Cubo mine, Valenciana mine complex, and San Ignacio mine, all located in Guanajuato). Sierra Metals presented voting results of its annual general and meeting of shareholders (Bolivar mine, Chihuahua). Royalties Inc., entered into an agreement to acquire USD $500K in shares of Music Royalties (Bilbao project, Zacatecas). Sonora Desert announced that TSX Venture Exchange has approved to change its name to Brasnova Energy Material Inc., (Cuatro Hermanos project, Sonora).  Torex entered into a definitive agreement to acquire all the issued and outstanding common shares of Prime Mining (El Limon Guajes Mine Complex, Guerrero).  Discovery Silver appointed its CFO (Cordero project, Chihuahua). Elemental Altus reported voting results from its annual general and special meeting and granted restricted share units stock options to directors (royalty on Mercedes mine, Sonora). Goldgroup retained Venture Liquidity to initiate its market-making service to provide assistance in maintaining an orderly trading market for the common shares of the company (Cerro Prieto mine, Sonora). Regency Silver reported voting results of its annual general and special meeting of shareholders (Dios Padre project, Sonora).  Royalties Inc., provided an update on its dispute with Capstone over a 2% Net Smelter Royalty (NSR) on five mining concessions known as the “Portree claims” at the Cozamin mine in Zacatecas. Alpayana completed the privatization of Sierra Metals (Bolivar mine, Chihuahua). ON SOCIAL RESPONSIBILITY, no relevant news.

ON MEXICO ISSUES

  • Almaden Minerals Ltd., provided an update on its arbitration with Mexico under the Comprehensive Progressive Agreement for Trans-Pacific Partnership (CPTPP) because of actions that led to the loss of their Ixtaca project investment in Puebla. Mexico’s attempt to bifurcate (separate) the proceedings to delay the case was rejected by the arbitration panel. The company emphasized that the procedural delay was motivated by Mexico’s desire to postpone responses and prolong the process. Almaden, which formerly held 100% of the Ixtaca project, aims to resolve the dispute with an update expected in Q4, and remains cautious about risks related to Mexico’s rule of law and political environment.

Impact Silver Corp., Guanajuato Silver Company Ltd., and Gold Resource Corporation reported the best drilling intercepts in Mexico on the fifth week of July, 2025. in Mexico on the third week of July, 2025. Details are shown in the table below:

ON EXPLORATION

  • No relevant news.

ON MINING

  • Americas Gold and Silver Corporation announced Q2, 2025 consolidated results. It reported consolidated silver production of 689K Oz and unaudited consolidated cash balance as at June 30, 2025 of USD $61.7M without disclosing figures per mine operation (Cosala mine, Sinaloa).
  • Santacruz Silver Mining Ltd., announced Q2, 2025 production results from its Zimapan mine in Hidalgo. The company processed 224,162 tonnes of 77 g/t Ag, 2.6% Zn, 0.8% Pb, and 0.22% Cu with metallurgical recoveries of 7!%, 77%, 76%, and 45% respectively, to produce 398.3K Oz Ag,  10.13M Lb Zn, 2.81M Lb Pb, and 0.51M Lb Cu.
  • Alamos Gold Inc., presented Q2, 2025 production and financial results from its Mulatos mine in Sonora. The company produced 34.1K Oz Au and sold 32.85K Oz Au at total cash cost and AISC of USD $1,017 and USD $1,084 per Oz Au sold respectively. Cost of sales per Oz Au sold (included amortization) was USD $1,437. Alamos also reported revenue of USD $110.6M and adjusted EBITDA of USD $260.2M. The company also announced its production guidance for 2025 and expects to produce between 130K-150K Oz Au at total cash and AISC of USD $925-975 and USD $1,025-$1,075 per Oz Au sold respectively.
  • Starcore International Mines Ltd., reported year end 2025 results from its San Martin mine in Queretaro. The company milled 197.9K tonnes with averages grades of 1.58 g/t Au and 14 g/t Ag with metallurgical recoveries of 81.7% and 56.7% respectively to produce 8.3K Oz Au and 49.3K Oz Ag (8.9K Oz AuEq) at cash  and AISC of USD $ 1,888 and USD $2,662 per Oz AuEq respectively. Starcore reported revenues of CAD $9.4M; income from mining operations of CAD $6.3M; income for the year of CAD $0.2M; and EBITDA of CAD $2.8M.
  • Agnico Eagle Mines Limited presented Q2, 2025 production results from its Pinos Altos mine in Chihuahua). The company milled 441K tonnes of 1.58 g/t Au to produce 21,363 Oz Au at a production cost of USD $2,367 per Oz Au; a total cash cost (co-product basis) of USD $2,440 per Oz Au; and  a total cash cost (by-product basis) of USD $2,002 per Oz Au.

ON FINANCING

  • GR Silver Mining Ltd., announced a bought deal LIFE offering of 60,000,000 units at a price of CAD $0.20 per unit for gross proceeds of CAD $12M. Gross proceeds will be used to advance its Plomosas project in Sinaloa, working capital, and general corporate purposes.
  • Masivo Silver Corporation declared that is expects to close a CAD $1.2M funded round by Mid-August, 2025. With a drill credit of CAD $75K and part of the equity raised in the financial round, Masivo plans to start drilling at Cerro Colorado project in Sonora in Q4 2025 after finalizing agreements with Minera Goldzone and partners.
  • Southern Silver Exploration Corp., closed its previously announced bought deal LIFE private placement of 55,555,557 units at a price of CAD $0.27 per unit for gross proceeds of CAD $15M. Net proceeds will be used for the advancement of the Cerro Las Minitas project in Durango, as well as for working capital and general corporate purposes.
  • Sierra Madre Gold and Silver closed the second and final tranche of its previously announced non-brokered private placement, which consisted of 2,500,000 units at a price of USD $0.70 per unit for gross proceeds of USD $1,750,000. Funds raised in first and second tranches totalled USD $19, 500,600.  The company intends to use the gross proceeds to expand the capacity of the Guitarra mine in Estado de Mexico, conduct a detailed exploration program, including drilling, at the East District, and for working capital and general corporate purposes.

ON RESOURCES AND DEVELOPMENT

  • Impact Silver Corp., released underground drill results from the Santo Domingo Zone at its Plomosas mine in Chihuahua. Assays results are shown in the table below.

Guanajuato Silver Company Ltd., announced high-grade gold intercepts at its Valenciana mine complex in Guanajuato. Drilling results are presented in the table below:

  • Agnico Eagle Mines Limited advanced in Q2, 2025 its Feasibility Study on San Nicolas project, Zacatecas, which remains in schedule to be completed by year-end. San Nicolas is 50/50 joint venture with Teck Resources Limited. The company also announced that it received an exploration permit authorizing additional drill pads across the property, and reported that Minas San Nicolas approved an USD $8.8M budget to conduct drilling activities focused on geotechnical, hydrological, and geological evaluation in proximity to the projected mine area.
  • Tocvan Ventures Corp., received permit for all drilling, trenching and extraction at Gran Pilar project, Sonora. The permits allow for 45 new drill pads enabling over 30,000m to expand resources and enhance the geological model as well as to explore high-grade target zones. It also includes 67 trenches across Gran Pilar for exploring and extraction of material for pilot mine. It pushes the company closer to running a 50,000 tonnes pilot mine development, refining their resource estimates, and to support its goal of advancing towards production.
  • Kootenay Silver Inc., finalized its first mineral resource estimate for the Columba Project in Chihuahua. A total of 17 epithermal veins that comprise the Columba vein system were included in the Mineral Resource Estimate (MRE). They’ve identified, at a base-case cut-off grade of 150 g/t Ag, inferred mineral resources of 5.92M tonnes grading 284 g/t Ag, 0.2% Pb, and 0.50% Zn. The MRE includes inferred mineral resources of 54.1M Oz Ag, 25.2 M Lb Pb, and 65.6M Lb Zn. The MRE is exclusive of mined out material (F Vein). Kootenay also mentioned that they´ve started a new phase of drilling to expand these mineralized zones even further.
  • Mithril Silver and Gold Limited reported significant high-grade results from channel sampling at its Copalquin property in Durango. Highlights include Target 6 with high-grade assays from channel sampling at the historical Santa Cruz underground mine, with notable results including 0.70m of 57.8 g/t Au and 2,120 g/t Ag; 0.80m of 17.4 g/t Au and 603 g/t Ag; 0.50m of 8.42 g/t Au and 188 g/t Ag; and 0.70m of 23.2 g/t Au and 755 g/t Ag; and Target 5  with surface channel sampling returning 0.5m of 27.9 g/t Au and 14 g/t Ag; 0.30m of 9.6 g/t Au and 608 g/t Ag. The mineralized corridors now cover an area of 2 km x 8 km with an elevation profile of 1,200 m within the 70 km² mining concession area. Mithril is fully funded to complete 45,000 meters of drilling over the next 12 months, with plans to commence drilling at Target 5 in mid-August 2025. 5. The results from both Targets 5 and 6 indicate a significant high-grade potential in the Copalquin District, which is developing into a notable gold-silver district in Mexico’s Sierra Madre trend. These highlights reflect the ongoing exploration success and the promising future of the Copalquin property.
  • Vizsla Silver Copor., and Vizsla Royalties Corp., announced preliminary results from a regional HLEM geophysical survey and initial fieldwork across its Panuco mining district and newly acquired Santa Fe property in Sinaloa. The HLEM survey at Panuco identified new near-surface anomalies including Santa Fe property, and supports resource expansion on known structures and proximal targets in Panuco West. Resource extension targets include Copala, Napoleon, HW4, La Luisa, and La Cruz Negra, each with potential for expansion through further drilling. Key exploration objectives for 2025 include completing +25,000 meters of drilling by the end of 2025, a TEM survey, district mapping, and generating near-mine drilling targets at Santa Fe. They’re focused on expanding their current Project #1 resource and hunting for a new major target, Project #2, using a range of techniques including drilling, mapping, and electromagnetic surveys. The work aims to better understand the structures controlling mineralization and identify fresh high-grade zones, especially around the Copala and Napoleon vein corridors. Their exploration focuses on structural controls such as NW-trending faults and vein corridors like Copala and Napoleon, which influence mineralization. The Santa Fe property’s infrastructure and prospective geology are expected to complement their ongoing district-wide exploration efforts. The Colorada-Napoleon intersection is a conceptual target supported by AI analysis and HLEM anomalies. 4 de Mayo shows high-grade silver intercepts, with HLEM geophysics identifying anomalies for follow-up drilling. San Jack and San Peter are parallel structures with quartz veining and hydrothermal alteration, with HLEM anomalies defining conductor anomalies over these targets. La Pipa is a high-grade shoot along the Animas vein system, with plans to drill +8,000 meters to follow up on the discovery. Camelia-San Dimas, San Fernando-Nacaral, El Roble, Oregano and La Wicha, and Jesusita-Palos Verdes are notable targets for testing. The San Enrique prospect comprises titled mining claims between Panuco and Santa Fe. LiDAR and airborne magnetic surveys show strong NW-trending lineaments, indicative of regional faults. Multispectral satellite imagery and a LiDAR survey will assist during target generation, with regional mapping and stream-sediment geochemistry planned. The La Garra-Metates District constrains silver-gold-rich epithermal veins. Rock chip samples returned silver equivalent grades greater than 200 g/t. The district holds strong potential for discovering high grade mineralization.
  • Gold Resource Corporation released H1, 2025 drill results from its Don David gold mine in Oaxaca, and reported operational improvements. Drilling highlights are shown in the table below:

In addition, Gold Resource has implemented several operational improvements at Don David Gold mine to enhance efficiency and productivity. The Company engaged Cominvi Servicios S.A. de C.V. for accelerated development, completing over 1,350m of underground work. New cut-and-fill mining methods were introduced to enhance grade and returns, alongside the ordering of a third dry stack filter press to boost processing throughput. A comprehensive review of the process plant is underway to optimize reagent use, which is expected to improve recoveries and increase the amount of payable metals. Initial trials have already shown promising results. These improvements are aimed at increasing operational efficiency, reducing costs, and maximizing shareholder value while integrating the newly defined vein systems into the mine’s short-term production plans.

ON DEALS AND CORPORATE ISSUES

  • Goldgroup Mining Inc., announced that its common shares will commence trading on OTCQX Best Market under the symbol “GGAZF”. The company maintains its primary listing on the TSX Venture Exchange under the symbol “GGA” (Cerro Prieto mine, Sonora). 
  • Silver Viper Minerals Corp., granted 1,375,000 incentive stock options to directors, officers, and consultants to purchase up to 1,375,000 common shares. The incentive stock options have an exercise price of CAD $0.58 per share, expire five years from the date of grant, and vest immediately (La Virginia project, Sonora).
  • Sierra Madre Gold and Silver Ltd., announced that it has granted stock options to employees of La Guitarra Compañia Minera S.A. de C.V., certain directors, management, and consultants to purchase an aggregate of 2,750,000 common shares at a price of $0.73 per share for a period of years from the grant date (La Guitarra mine, Estado de Mexico).
  • Xali Gold Corp., declared that is pivoting their exploration efforts in South America, focusing on acquiring advanced-stage gold projects, while it continues moving forward with its Sarape project in Sonora where drilling is planned for Q4, 2025/Q1, 2026. The company also announced that they´ve run into issues at the El Oro project in Estado de Mexico, with nine concessions being declared cancelled. It could significantly impact Xali Gold´s operation by halting exploration and development activities on approximately 35% of the land package within the project area. Xali believes that these cancellations are unlawful because proper legal procedures were not followed; including failure to receive formal notices and the absence of a 60-day cure period as required by Mexican law. Xali Gold is actively reviewing legal options to contest or revoke the cancellations, which could mitigate potential operational disruptions if successful.
  • Masivo Silver Corp., provided an update on its Mexican projects. It announced that it is experiencing difficulties in obtaining financial information from its Mexican operations which has delayed the preparation of its annual financial statements and related filings (annual MD&A, CEO and CFO certifications, etc). The company has now completed the necessary financial and is in the process of completing the audit, which is expected to be finalized by August 31, 2025. Masivo has requested a voluntary management cease trade order (MCTO) to restrict trading in the company´s securities by insiders.
  • Guanajuato Silver Company Ltd., expanded its senior management team with the appointment of Rick Trotman as its Senior Vice President. The company also granted 2,200,000 stock options to officers and employees of the company at an exercise price of CAD $0.32. The stock options will expire on July 29, 2030 (El Cubo mine, Valenciana mine complex, and San Ignacio mine, all located in Guanajuato).
  • Sierra Metals Inc., presented voting results of its annual general and meeting of shareholders At the Meeting, Sierra Shareholders approved the amalgamation of Sierra Metals and a new wholly-owned subsidiary of the company, which will be incorporated shortly. The amalgamation constitutes the “subsequent acquisition transaction” contemplated by the offer of Alpayana Canada Ltd., to acquire all of the issued and outstanding common shares at an offer price of CAD $1.15 per common share that expired at 5:00 p.m. (Toronto time) on May 23, 2025 (Bolivar mine, Chihuahua).
  • Royalties Inc., entered into an agreement to acquire 8,333,333 shares of Music Royalties Inc., at a price of USD $0.50 per share for a value of USD $500K, (Bilbao project, Zacatecas).
  • Sonora Desert Copper Corporation announced that TSX Venture Exchange has approved to change its name to Brasnova Energy Material Inc., and will commence trading under the symbol “BEM” (Cuatro Hermanos project, Sonora). 
  • Torex Gold Resources Inc., entered into a definitive agreement to acquire all the issued and outstanding common shares of Prime Mining Corporation. Prime shareholders will receive 0.060 of a Torex share for each Prime Mining share, representing an 18.5% premium. Upon completion, Prime shareholders will own approximately 10.7% of Torex.  The deal enhances Torex’s asset portfolio in Mexico, notably adding Prime’s Los Reyes project, which has significant gold and silver resources. The transaction requires approval of at least 66⅔% of the votes cast by Prime Mining shareholders and securityholders, and a simple majority excluding votes from certain shareholders under MI 61-101. The transaction is subject to regulatory approvals, including TSX approval and Mexican antitrust clearance, and is expected to close in the second half of 2025. A termination fee of USD $12.5M is payable to Torex by Prime under certain circumstances if the transaction is not completed (El Limon Guajes Mine Complex, Guerrero).
  • Discovery Silver Corp., appointed its CFO effective immediately (Cordero project, Chihuahua).
  • Elemental Altus Royalties Corp., reported voting results from its annual general and special meeting and granted 360,000 restricted share units and 782,850 stock options to directors who join the company in 2025 (royalty on Mercedes mine, Sonora).
  • Goldgroup Mining Inc., retained Venture Liquidity Providers Inc., (VLP) to initiate its market-making service to provide assistance in maintaining an orderly trading market for the common shares of the company. Goldgroup has agreed to pay VLP CAD $5,000 per month for a period of 3 months. Following the initial term of 3 months, the agreement will automatically renew for successive additional 1-month terms and the agreement may be terminated at any time by the Goldgroup or VLP (Cerro Prieto mine, Sonora).
  • Regency Silver Corp., reported voting results of its annual general and special meeting of shareholders (Dios Padre project, Sonora).
  • Royalties Inc., provided an update on its dispute with Capstone over a 2% Net Smelter Royalty (NSR) on five mining concessions known as the “Portree claims” at the Cozamin mine in Zacatecas. The Third Commercial Court of Zacatecas ruled in favor of Minera Portree, affirming their ownership of a 2% NSR and ordering Capstone to pay royalties. Capstone has filed an appeal against the judgement, but Royalties Inc. believes the court’s decision is strong and that its claim to the royalty is legitimate. The judgment and ongoing legal process reinforce Royalties Inc.’s position in the dispute, emphasizing the asset’s significance and potential increase in value due to rising copper and silver prices. The 2% NSR on the Portree 1 claim, which represents up to 30% of the 1.5 km strike length of the Mala Noche Footwall Zone, could generate up to USD $2.5M annual cash flow, plus an estimated USD $9M in retroactive payments for production since 2019.
  • Alpayana S.A.C., completed the privatization of Sierra Metals Inc., through an amalgamation with its subsidiary, Amalco, resulting in Sierra Metals being a wholly owned private company. Shareholders exchanged their Sierra shares for Amalco shares, and Alpayana acquired all preferred shares, making Amalco fully owned by Alpayana. Consequently, Sierra Madre will be delisted from the Toronto Stock Exchange (Bolivar mine, Chihuahua).

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 below, sigmoidal en-echelon hydrothermal quartz vein in a shear zone in an intermediate sulphidation epithermal vein system in a project in Chihuahua, Mexico. Photo taken by Miguel A Heredia.

The Mining and Exploration News in Mexico: Highlights on the Third Week of July, 2025

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Barite crystals

By Miguel A Heredia

During the 29th week of the year (July 13th to July 20th 2025), at least 38 press releases were announced by companies working in Mexico, with fifteen disclosing deals and corporate issues, fifteen announcing financing rounds, three reporting resources and developments of their properties, two communicating production results, two informing on exploration results, and one commenting on Mexican issues.  ON MEXICO ISSUES, Torex Gold and Minaurum Gold reported the best drilling intercepts in Mexico on the third week of July, 2025.  ON EXPLORATION, In Sonora, Minaurum Gold reported drill results from a new vein zone target at the Promontorio Sur within its Alamos project. In Zacatecas and San Luis Potosi, Silver Valley Metals re-initiated exploration at the Mexi-Can Potash-Lithium project.  ON MINING, Altius reported Q2, 2025 expected attributable royalty revenue of CAD $12M (Llano de Nogal project, Sonora). Bear Creek reported Q2, 2025 production results from its Mercedes mine in Sonora. ON FINANCING, Vizsla Silver announced that after it completed bought deal offering of 33,334,000 common shares at a price of USD $3 per share, the underwriters have purchased an additional 5,000,100 common shares for gross proceeds of USD $15,000,300 (Panuco project, Sinaloa).  Pinnacle arranged a non-brokered private placement for gross proceeds of USD $1.2M (El Potrero project, Durango). Sierra Madre entered into a best offer private placement for gross proceeds of up to USD $10M, which later on it upsized of up to USD $16.5M (La Guitarra mine, Estado de Mexico).  Southern Silver announced bought deal LIFE private placement for gross proceeds of CAD $8M, the same that later on it upsized to CAD $13M (Cerro Las Minitas project, Durango). Mammoth upsized its previously announced non-brokered private placement to up to CAD $980K (Tenoriba project, Chihuahua). Roberto Resources announced a non-brokered private placement for gross proceeds of CAD $1M (Claudia project, Durango).  Aura Minerals published that it priced and closed its US initial public offering of 8,100,510 common shares at a price of USD $24.25 per share (Aranzazu mine, Zacatecas). Colibri announced that it intends to amend terms of outstanding debentures, warrants, and finder’s options issued in 2023 (Gran Pilar project, Sonora). Capitan Silver generated CAD $6.6M through the accelerated exercise of warrants (Cruz de Plata project, Durango). Garibaldi closed a non-brokered private placement for gross proceeds of CAD $1M (Tonichi project, Sonora). Goldgroup announced a non-brokered private placement for gross proceeds of up to 15,000,000 units at a price of CAD $0.80 per unit for gross proceeds of up to CAD $12M (Pinos project, Zacatecas). Prismo Metals upsized and closed its previously announced private placement for gross proceeds of CAD $575K (Palos Verdes project, Sinaloa).  ON RESOURCES AND DEVELOPMENT, Starcore shared an update on its San Juan Nepomuceno or Tortilla project in Queretaro. Orla filed an updated NI 43-101 technical report on Camino Rojo mine in Zacatecas. Torex Gold reported drill results from its EPO deposit within the El Limon Guajes and Media Luna mine complex in Guerrero. ON DEALS AND CORPORATE ISSUES, Apollo Silver entered into an investor relations agreement with Matthews Investments (Cinco de Mayo project, Chihuahua). Vizsla Royalties announced its participation at the Emerging Growth Conference (Panuco project, Sinaloa). US Antimony provided an update on its antimony supply effort for its Madero smelter in Coahuila. GR Silver announced incentive plan grants to eligible persons in accordance with the Omnibus Long-Term Incentive Plan (Plomosas project, Sinaloa). Defiance Silver signed a definitive agreement to acquire all issued and outstanding common shares of Green Earth Metals (San Acacio project, Zacatecas). Almaden announces intention to migrate Canadian stock exchange listing from TSX to TSX Venture Exchange (Ixtaca project, Puebla).  Candelaria Mining reported voting results from its annual general meeting of shareholders. Roberto Resources completed the acquisition of the Claudia project in Durango and announced change of its name to Pacific Silver.  Pinnacle declared that it has engaged the services of an independent trading group to provide market-making services (Potrero project, Durango). Oroco entered into an option agreement to acquire a 100% interest in the Vainilla mineral concession located in the Choix mining district in Sinaloa. Starcore announced significant corporate developments (San Martin mine, Queretaro).  Minera Alamos reported voting results from its annual general meeting of shareholders (Santana mine, Sonora). Almadex announced completion of gold loan repayment by Almaden (El Cobre project, Veracruz).  ( ON SOCIAL RESPONSIBILITY, no relevant news.

ON MEXICO ISSUES

  • Torex Gold Resources Inc., and Minaurum Gold Inc., reported the best drilling intercepts in Mexico on the third week of July, 2025. Details are shown in the table below:

ON EXPLORATION

  • Silver Valley Metals Corp., re-initiated exploration at the Mexi-Can Potash-Lithium project in Zacatecas and San Luis Potosi. The company will be conducting metallurgical studies on potash extraction, focusing on the extraction of sulphate of potash from surface sediments across all salars within the project area; will undertake auger drilling to assess the depth and extents of sedimentary basins across the project´s salars; will initiate hydrological testing to gain a clear understanding of the geochemical and physical properties of near-surface brines across all salars; and will carry out a geophysical program to map subsurface structures and identify high-potential zones for deeper brine targets.
  • Minaurum Gold Inc., reported drill results from a new vein zone target at the Promontorio Sur within its Alamos project in Sonora. The 1.5 km-long vein zone is an unmined extension of a 3.5km long Promontorio-Quintera structural-grade vein system trend, with significant historical silver production nearby, which has produced over 70M Oz Ag at Promontorio mine and over 100M Oz Ag at La Quintera mine. Promontorio and Promontorio Sur also indicate a significant skarn/carbonate replacement (CRD) mineralization hosted by limestone in the footwall of the vein zones. The lead-zinc (gold) skarn/CRD event appears to have occurred later than the epithermal silver-copper mineralization and represents a large target. Drilling results are shown in the table below:

ON MINING

  • Altius Minerals Corporation reported Q2, 2025 expected attributable royalty revenue of CAD $12M (Llano de Nogal project, Sonora).
  • Bear Creek Mining Corporation reported Q2, 2025 production results from its Mercedes mine in Sonora. The company mined 91.945 tonnes and processed 89,488 tonnes of 2.88 g/t Au with a metallurgical recovery of 96% to produce 7,973 Oz Au and 33,932 Oz Ag.

ON FINANCING

  • Vizsla Silver Corp., announced that after it completed bought deal offering of 33,334,000 common shares at a price of USD $3 per share, the underwriters have purchased an additional 5,000,100 common shares for gross proceeds of USD $15,000,300. Gross proceeds will be used to advance the exploration and development of the Panuco project in Sinaloa, exploration of the Santa Fe project, which is adjacent to Panuco project, potential future acquisitions, as well as for working capital and general corporate purposes.
  • Pinnacle Silver and Gold Corp., arranged a non-brokered private placement of up to 20,000,000 units at a price of USD $0.06 per unit for gross proceeds of USD $1.2M. Net proceeds will be used to advance El Potrero project in Durango, and for general working capital.
  • Sierra Madre Gold and Silver Ltd., entered into a best offer private placement of up to 14,290,000 units at a price of USD $0.70 per unit for gross proceeds of up to USD $10M. Later on, the company upsized the previously announced private placement to up to 23,572,000 units at a price of usd $0.70 for gross proceeds of up to USD $16,500,400 Gross proceeds will be used to expand the capacity of the La Guitarra mine, Estado de Mexico, and for working capital and general corporate purposes. 
  • Southern Silver Exploration Corp., announced bought deal LIFE private placement with a sole underwriter and bookrunner which has agreed to purchase for resale 29,629,630 units at a price of CAD $0.27 for gross proceeds of CAD $8M. Later on, Southern Silver upsized the previously announced bought deal private placement to 48,148,149 units at a price of CAD $0.27 for gross proceeds of CAD $13M.  The company plans to use the net proceeds for the advancement of the Cerro Las Minitas project in Durango, as well as for working capital and general corporate purposes.
  • Mammoth Resources Corp., upsized its previously announced non-brokered private placement of up to 30,000,000 units at an offering price of CAD $0.025 per unit for gross proceeds of up to CAD $750K to up to  39,000,000 units for gross proceeds of up to CAD $980K. Gross proceeds will be used to advance the Tenoriba project in Chihuahua, to evaluate potential project acquisitions and support working capital needs.
  • Roberto Resources Inc., announced a non-brokered private placement of 2,500,000 units at a price of CAD $0.40 per unit for gross proceeds of CAD $1M. Gross proceeds will be used for general working capital and future payables related to the acquisition of the Claudia project in Durango.
  • Aura Minerals Inc., published that it priced and closed its US initial public offering of 8,100,510 common shares at a price of USD $24.25 per share.  The principal purposes of this offering are to transfer Aura’s principal listing venue to a stock exchange in the US equity market, which the Company believes will increase the liquidity of its common shares, as well as strengthen and diversify its shareholder base through broader access to global capital markets. Aura plans to use the gross proceeds to continue strengthening its business, to provide incremental liquidity and financial flexibility to support the execution of its current strategic growth initiatives, to provide exploration initiatives to expand mineral reserves and resources of its portfolio, and for general corporate purposes (Aranzazu mine, Zacatecas).
  • Colibri Resource Corporation announced that it intends to amend terms of outstanding debentures, warrants, and finder’s options issued in 2023. The amendments include extending maturity dates for two years and reducing conversion/exercise prices from CAD $0.50 to CAD $0.25, with an alternative option to convert at CAD $0.15.  The amendments include an accelerated expiry clause if the company’s stock price exceeds CAD $0.30 for ten consecutive days, and insider holdings are exempt from certain regulatory requirements. These changes aim to strengthen Colibri’s balance sheet and support its Pilar project development in Sonora.
  • Capitan Silver Corp., generated CAD $6.6M through the accelerated exercise of 13,250,000 warrants, with an exercise price of CAD $0.50 (Cruz de Plata project, Durango).
  • Garibaldi Resources Corp., closed a non-brokered private placement of 14,401,988 units at a price of CAD $0.07 per unit for gross proceeds of CAD $1M. Gross proceeds will be used for exploration and working capital purposes.
  • Goldgroup Mining Inc., announced a non-brokered private placement for gross proceeds of up to 15,000,000 units at a price of CAD $0.80 per unit for gross proceeds of up to CAD $12M. Net proceeds will be primarily dedicated to the diligent assessment and strategic pursuit of acquisition opportunities (Pinos project, Zacatecas).
  • Prismo Metals Inc., upsized and closed its previously announced private placement of 5,000,000 to 11,500,000 units at an issue price of CAD $0.05 per unit for gross proceeds of CAD $575K. Prismo intends to use the gross proceeds for general corporate purposes  (Palos Verdes project, Sinaloa).

ON RESOURCES AND DEVELOPMENT

  • Starcore International Mines Ltd., shared an update on its San Juan Nepomuceno or Tortilla project in Queretaro. The project comprises six mineral claims covering a historical mine with exploration potential. During  the due diligence process, Starcore conducted cyanidation tests on samples that averaged 2.15 g/t Au, 968 g/t Ag, 0.01% Cu, 0.4% Pb, and 0.1% Zn, showing gold and silver metallurgical recoveries of 79.85% and 84.75% respectively using the carbon-in-leach (CIL) process, demonstrating  effective processing of the mineralized ore. The project with historical mining activity remains open at-depth with substantial lateral extension potential.
  • Orla Mining Ltd., filed an updated NI 43-101 technical report on Camino Rojo mine in Zacatecas to include the initial Underground Mineral Resource Estimate.
  • Torex Gold Resources Inc., reported drill results from its EPO deposit within the El Limon Guajes and Media Luna mine complex in Guerrero. “Drilling in the northern area of EPO to date in 2025 has been focused on the northern block of the west-northwest La Avispa fault, which controls a dike swarm of an estimated width of 150 to 200 m that represents a discontinuity between the main EPO mineralized zone to the south and its northern extension within the hanging wall of the fault. The current mineralization footprint in the north extends approximately 500 x 200 m with a west-northwest strike that has a significant vertical continuity ranging between 15 m to over 100 m between the interpreted boundaries of the favourable alteration zone that vertically extends for ~200 m. The lateral continuity of the mineralization is defined by the spacing between the dikes that varies from approximately 5 to 35 m, defining several mineralized blocks. Mineralization remains open to the north following the favourable alteration zone “. Drilling highlight are shown in the table below:

ON DEALS AND CORPORATE ISSUES

  • Apollo Silver Corp., entered into an investor relations agreement with Matthews Investments to provide Investor Relations services to the company. In consideration, Matthews will receive CAD $7K per month, payable monthly in arrears, for an initial term of three months, with the option for the Company to renew on a quarterly basis thereafter (Cinco de Mayo project, Chihuahua)
  • Vizsla Royalties Corp., announced its participation at the Emerging Growth Conference on July 16, 2025, a live interactive online event which will give existing shareholders and the investment community the opportunity to interact with the company´s President and CEO (Panuco project, Sinaloa).
  • US Antimony Corporation (USAC) provided an update on its antimony supply effort for its Madero smelter in Coahuila. Last March, 2024, USAC decided to stop their own mining operations in Mexico due to economic and regulatory challenges but continues to build strategic relationships with other companies seeking access to Mexican antimony deposits. Recently, USAC restarted the Madero Smelter in April 2025, following a substantial increase in antimony prices (over 500%). The company is actively negotiating new supplies and contracts, including a definitive agreement with Bolivian suppliers for initial shipments of approximately 10 tonnes, ramping up to 150 tonnes per month by early 2026. Additionally, USAC is exploring other potential sources in Mexico and attracting foreign interest, particularly from Chinese entities, amid limited new concessions from the Mexican government. USAC owns significant assets, including a flotation facility and the only operating smelter in Mexico, which provide strong negotiating leverage.
  • GR Silver Mining Ltd., announced incentive plan grants to eligible persons in accordance with the Omnibus Long-Term Incentive Plan. GR Silver granted an aggregate 3,837,205 Performance Share Units (PSU) to certain executive officers of the company (Plomosas project, Sinaloa).
  • Defiance Silver Corp., signed a definitive agreement to acquire all issued and outstanding common shares of Green Earth Metals Inc (GEMS).  GEMS is a privately held company based on British Columbia with a portfolio of three copper-silver projects in Sonora. Defiance issued an aggregate of 4,954,613 common shares to the shareholders of GEMS at a deemed price of CAD $0.255 per Defiance share in exchange for all issued and outstanding GEMS shares, based on an exchange ratio of one Defiance share for every 4.52 GEMS shares, for a total consideration of CAD $1,263,426 (San Acacio project, Zacatecas).
  • Almaden Minerals Ltd., announces intention to migrate Canadian stock exchange listing from TSX to TSX Venture Exchange. In order to complete this migration, the company has applied to voluntarily delist its shares from the TSX, and has received conditional approval from the TSXV to list its shares as a Tier 2 Mining Issuer. Almaden expects the delisting from the TSX to occur at the close of business on August 12, and the listing on the TSXV to commence at the open of business on August 13, 2025 (Ixtaca project, Puebla).
  • Candelaria Mining Corp., reported voting results from its annual general meeting of shareholders. 
  • Roberto Resources Inc., completed the acquisition of the Claudia project in Durango, pursuant to the binding letter agreement previously announced on June 30, 2025. Roberto Resources also announced that it changed its name to Pacifica Silver Corp., “to better reflect its overall business strategy to acquire and advance highly prospective precious metals projects in the Americas”. It also plans to change the symbol of its common shares to “PSIL”.
  • Pinnacle Silver and Gold Corp., declared that it has engaged the services of an independent trading group (ITG) to provide market-making services. Under the agreement, ITG will receive compensation of CAD $5K per month, payable monthly in advance. The agreement is for an initial term of one month and will renew for additional one-month terms unless terminated (Potrero project, Durango).
  • Oroco Resources Corp., entered into an option agreement through its wholly-owned Mexican subsidiary Minera Xochipala S.A. de C.V., to acquire a 100% interest in the Vainilla mineral concession which surrounds their Santo Tomas Project in Sinaloa by paying an initial USD $75K and 100,000 common shares to Aztec Zinc de Mexico S.A. de C.V., with semi-annual payments of USD $25K and 100,000 common shares thereafter.  To exercise the option, Oroco must pay USD $500K and issue 2,000,000 shares. Upon completion, a 1.5% Net Smelter Returns royalty will be granted to third parties, and Xochipala will be responsible for concession duties during the option period.  Vainilla covers about 2,974 hectares and hosts multiple mineralized zones, including skarns and breccia pipes, situated along a promising porphyry copper belt. The acquisition enhances Oroco’s control over the region, offering immediate exploration opportunities for copper and related metals, and complements their existing Santo Tomás project both geologically and strategically, supported by local government initiatives.
  • Starcore International Mines Ltd., announced significant corporate developments. On July 8, 2025, shareholders will receive one share of EU Gold Mining Inc. for every two shares of Starcore upon approval of the spin-out of exploration interests in Côte d’Ivoire. On July 10, 2025, Starcore secured a ten-year lease for San Juan Nepomuceno, a historical silver mine in Queretaro, gaining access to minerals and surrounding claims in a promising area. On July 14, 2025, the company confirmed its use of carbon-in-leach (CIL) processing technology at the San Martin mine in Queretaro, enhancing mineral recovery, aiming to increase shareholders value, as shown by recent metallurgical tests.
  • Silver Storm Mining Ltd., completed its acquisition of Till Capital through a court-approved plan of arrangement, resulting in Till shareholders receiving 16.36 Silver Storm units, with each unit comprising a common share, a warrant, and a contingent value rights (CVRs) tied to a potential sale of a stake in IG Far East LLC (the CVR contingent event). Silver Storm issued 52,211,558 unit shares, 13,052,890 warrants, and 52,211,558 CVRs to former Till shareholders, resulting in a new total of outstanding shares and warrants for Silver Storm.  Following the deal, Silver Storm now holds a significantly expanded share structure, and Till’s previous directors and officers have resigned. This arrangement positions Silver Storm to potentially benefit from future asset sales and operational developments.
  • Minera Alamos Inc., reported voting results from its annual general meeting of shareholders (Santana mine, Sonora).
  • Almadex Minerals Ltd., announced completion of gold loan repayment by Almaden Minerals Ltd. The repayment involves the return to Almadex of 397 Oz Au plus the payment of USD $5,194,354 (El Cobre project, Veracruz).

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 below, large barite crystals in an intermediate sulphidation epithermal vein system in a project in Chihuahua, Mexico. Photo taken by Miguel A Heredia.

The Mining and Exploration News in Mexico: Highlights on the Third Week of June, 2025

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The Sierra Madre Occidental, Chihuahua, Mexico.

By Miguel A Heredia

During the 25th week of the year (June 16th to June 22th 2025), at least 38 press releases were announced by companies working in Mexico, and 2 news published by the media, with twenty one disclosing deals and corporate issues, eight announcing financing rounds, three reporting resources and development of their properties, three commenting on Mexican issues, three discussing social issues, two informing on exploration results, and none communicating production results.  ON MEXICO ISSUES, The Secretary of Economy, Marcelo Ebrard stated that the Mexican mining states are the new focus to strengthen the sector and ensure that extracted metals and minerals are transformed into value-added products. Marcelo Ebrard, Secretary of Economy declared that mining has become fashionable due to global geopolitical changes, marking a shift from the previous administration’s policies. Axo Copper reported the best drilling intercepts in Mexico on the third week of June, 2025. ON EXPLORATION, In Jalisco, Axo Copper initiated a 15,000m phase II drilling program at its la Huerta Copper project, as well as reported high grade assay results on surface sampling.    ON MINING, No relevant news. ON FINANCING, Guanajuato Silver updated their gold loan terms with Ocean Partners UK Ltd, (Cubo, Valenciana, and San Ignacio mines, Guanajuato). Pinnacle announced a shares-for-debt transaction to conserve capital and improve its balance sheet (Potrero project, Durango). Southern Empire announced a fully subscribed non-brokered private placement for gross proceeds of $100K (Pedro Gold project, Durango). Prime reported that 97% of its CAD $1.15 warrants due June 12, 2025 have been exercised, increasing its cash balance to approximately CAD $33M (Los Reyes project, Sinaloa). Kootenay announced a CAD $12M bought deal public offering to support the advancement of its Columba project in Chihuahua, the same that later on was upsized to CAD $17, 400,600. Silver Viper informed that it plans a concurrent non-brokered private placement of up to 6,666,667 units at a price of CAD $0.30 per unit, following a strong investor interest. Defiance Silver closed its LIFE offering and concurrent non-brokered private placement for gross proceeds of CAD $16.5M (San Acacio project, Zacatecas).  ON RESOURCES AND DEVELOPMENT, Kootenay delivered maiden mineral resource estimate at its 100% owned Columba project in Chihuahua. Tocvan reported that it is advancing its Gran Pilar project in Sonora, with a pilot mine facility designed to process 50,000 tonnes of material. Vizsla provided an update on the Copala test mine at its Panuco project in Sinaloa. ON DEALS AND CORPORATE ISSUES, Santacruz Silver announces the appointment of its CFO (Zimapán mine, Hidalgo). Discovery Silver made management changes (Cordero project, Chihuahua). Aura presented voting results of its annual general meeting of shareholders (Aranzazu mine, Zacatecas). Guanajuato Silver confirmed that the expiry date for the 4,550,000 warrants issued to Ocean Partners UK Ltd., is March, 2028 (Cubo, Valenciana, and San Ignacio mines, Guanajuato). Osisko Development appointed a new member to its Board of Directors (San Antonio Gold project, Sonora). Mithril announced the retirement of two Non-Executive Directors (Copalquin project, Durango).  Minaurum appointed Ruben Molina as Senior Project Manager for the Alamos Silver project, Sonora and three additional seasoned geologists. Equinox and Calibre completed its previously announced business combination (Los Filos mine, Guerrero). Colibri reported voting results of its annual general meeting of shareholders (Pilar project, Sonora). Elemental Altus announced changes to its Board of Directors (Mercedes mine, Sonora). MAG Silver presented voting results of its annual general meeting of shareholders (Juanicipio mine, Zacatecas). Torex announced results of its annual general and special meeting of shareholders (El Limon Guajes mine complex, Guerrero).  Gold Resource appointed a new member to its Board of Directors (Don David Gold mine, Oaxaca). Sierra Madre announced voting results of its annual general meeting of shareholders (La Guitarra mine, Estado de Mexico). Royalties Inc., achieved a significant legal victory through its subsidiary, Minera Portree in a commercial lawsuit against Capstone Copper (Cozamine mine, Zacatecas). Aloro announced voting results of its annual general and special meeting of shareholders (Los Venados project, Sonora). MAG Silver reported that their shareholders received a recommendation to vote for the plan of arrangement with Pan American Silver (Juanicipio mine, Zacatecas). Prime announced voting results of its annual general and special meeting of shareholders (Los Reyes project, Sinaloa). Silver Viper completed the acquisition of the Cimarron project in Sinaloa. Infinitum Copper signed a definitive agreement to sell its interest on Adelita project in Sonora. ON SOCIAL RESPONSIBILITY, Guanajuato Silver reported that it has been recognized as a Mexico´s Socially responsible Enterprise in 2024 (Cubo, Valenciana, and San Ignacio mines, Guanajuato). MAG Silver published its fourth annual sustainability report (Juanicipio mine, Zacatecas).

ON MEXICO ISSUES

  • The Secretary of Economy, Marcelo Ebrard, stated that the Mexican mining states are the new focus to strengthen the sector and ensure that extracted metals and minerals are transformed into value-added products. The event held in Mexico City was attended by the governors of Sonora, Alfonso Durazo, and Zacatecas, David Monreal, two states with a mining vocation, as well as representatives from academia and the sector, who highlighted the importance of a coordinated strategy between the federal government, universities, and the private sector. The government aims to retain economic and technological benefits domestically through initiatives like the Mexico 2025 Mining Education Committee, which fosters industry-academia collaboration. Specifically, efforts are underway to advance lithium production, particularly in Sonora, with support from federal and state authorities, though some projects such as the Sonora Sustainable Energy Plan are still in exploration phases.
  • Marcelo Ebrard, Secretary of Economy declared that mining has become fashionable due to global geopolitical changes, marking a shift from the previous administration’s policies.   Ebrard highlighted the need for Mexico to scale up its capabilities in the mining industry, particularly in refining minerals like copper, to support industries like automotive. He emphasized the importance of implementing a policy of will to address challenges in obtaining critical minerals in a world with geopolitical tensions, citing silicon for semiconductors as an example.
  • Axo Copper Corp., reported the best drilling intercepts in Mexico on the third week of June 2025. Details are shown in the table below:

ON EXPLORATION

  • Axo Copper Corp., initiated a 15,000m phase II drilling program at its la Huerta Copper project in Jalisco. One drill is currently on site and initiating the first drillholes targeting the main La Huerta Trend in an area with a NE-SW strike length of approximately 1km, starting at Las Marias Zone and stepping out to the north along strike towards the Cornelio target. The first hole is expected to be finished in approximately two weeks, with assays being released in the first half of July. In addition, Axo reported that recent exploration efforts, including mapping and sampling, have identified a new area at La Huerta South, approximately 3km from the main Huerta Trend where surface sampling yielded high-grade assay results, with multiple samples returning > 10% Cu, particularly within N-S and E-W fault structures in andesitic volcanic rocks.  Sampling along the 1km long N-S structure has returned results such as 7% Cu, 10.8% Cu, and 10.5% Cu, with numerous other showings above 2% Cu, while the approximately 500m long E-W structure returned highlighted values of 3.6% and 2.6%. In both structures Cu mineralization consists of chalcopyrite and bornite hosted in andesites.

ON MINING

  • No relevant news.

ON FINANCING

  • Guanajuato Silver Company Ltd., updated their gold loan terms with Ocean Partners UK Ltd, with more manageable monthly repayments tied to their gold production, plus some stock warrants involved. “The new Gold Credit Facility, as of today’s date, has an outstanding balance of 7,182 Oz Au bullion, with two-thirds since April 2025 to be repaid over 36 months through fixed monthly installments of 131.7 Oz Au bullion, representing approximately 10% of Guanajuato Silver’s modelled monthly gold production. In addition, the company will issue to Ocean Partners 4,550,000 non-transferable warrants exercisable into one common share of the Company with an exercise price of CAD $0.24. Each warrant has a 36-month term that expires on June 16, 2028. The warrants, and the common shares issuable upon exercise, are subject to a statutory hold period that ends on October 17, 2025 (Cubo, Valenciana, and San Ignacio mines, Guanajuato).
  • Pinnacle Silver and Gold Corp., announced a shares-for-debt transaction to conserve capital and improve its balance sheet. The company will issue 2,491,667 shares at a price of CAD $0.06 per share to settle a debt of CAD $149,500, pending approval from the TSX Venture Exchange. This issuance includes shares to directors and officers, which qualifies as a related party transaction, with the company relying on exemptions due to the transaction’s value being under 25% of its market capitalization (Potrero project, Durango).
  • Southern Empire Resources Corp., announced a fully subscribed non-brokered private placement of 2M units at a price of CAD $0.05 per unit for gross proceeds of CAD $100K. Net proceeds will be used for administrative costs associated with Southern Empire´s mineral properties in Mexico as well as working capital purposes (Pedro Gold project, Durango).
  • Prime Mining Corp., reported that 97% of its CAD $1.15 warrants due June 12, 2025 have been exercised, increasing its cash balance to approximately CAD $33M. This funding will support the advancement of the Los Reyes gold-silver project in Sinaloa, Mexico. The company plans to complete a Preliminary Economic Assessment (PEA) by Q3 2025 and continue exploration activities, including drilling and geological mapping, despite a temporary pause due to security concerns in the area.
  • Kootenay Silver Inc., announced a CAD $12M bought deal public offering by the sale of 11,430,000 units at a price of CAD $1.05 per unit, which was upsized later on to CAD $17,400,600 by the sale of 16,572,000 units at a price of CAD $1.05 per unit. Net proceeds will be used for advancement of its Columba project in Chihuahua, working capital and general corporate purposes.
  • Silver Viper Minerals Corp., informed that it plans a concurrent non-brokered private placement of up to 6,666,667 units at a price of CAD $0.30 per unit, following a strong investor interest.  The gross proceeds, expected to reach up to CAD $6M combined with a previous offering, will fund drilling and exploration at La Virginia project in Sonora, working capital, and general corporate needs.
  • Defiance Silver Corp., closed a financing round, raising about CAD $16.5M through both brokered and non-brokered offerings. The company sold units combining shares and warrants, with plans to use the money mainly to complete a mineral resource estimate at its San Acacio project in Zacatecas, to make periodic cash option payments on its Tepal project in Michoacán, and to provide general working capital to support general operations.

ON RESOURCES AND DEVELOPMENT

  • Kootenay Silver Inc., delivered maiden mineral resource estimate (MRE) at its 100% owned Columba project in Chihuahua.  A total of 17 epithermal veins that comprise the Columba vein system were included in the MRE. The company reported inferred resources of 5.92M tonnes of 284 g/t Ag, 0.2% Pb, and 0.5% Zn for a total of 54.1M Oz Ag, 25.2M Lb Pb, and 65.6M Lb Zn. Kootenay stated that all the mineralized veins which are 5-6m width have an excellent continuity and remain open to expansion along strike, to depth or both.
  • Tocvan Ventures Corp., reported that it is advancing its Gran Pilar project in Sonora, with a pilot mine facility designed to process 50,000 tonnes of material. The pilot leaching pad will utilize a hydrometallurgical process with sodium cyanide to extract gold and silver, supported by robust environmental monitoring systems. The project has expanded to over 21 km², enhancing operational flexibility. Tocvan is finalizing budgets and timelines for the facility, targeting development in 2025, while permitting and additional drilling are ongoing. The company is positioned to leverage record-high gold prices and is in the process of securing project financing for the pilot facility.
  • Vizsla Silver Corp., provided an update on the Copala test mine at its Panuco project in Sinaloa. As of June 2025, mining progress includes advancing about 125 meters down a decline at a steady rate, with favorable ground conditions. “This portal will ultimately become the main access for future mining. Every meter brings us closer to the 10,000-tonne bulk sample location and positions us for efficient resource conversion/expansion drilling from underground, and for the ultimate mine development and ramp-up”. Additionally, Vizsla aims to enhance resource evaluation and optimize mining design through ongoing development. A focus on local hiring has expanded the workforce, and infrastructure improvements have been initiated for better operational and safety management. Overall, the company is on track to complete its test mine phase by year-end.

ON DEALS AND CORPORATE ISSUES

  • Santacruz Silver Mining Ltd., announces the appointment of its new CFO, been effective immediately (Zimapan mine, Hidalgo).
  • Discovery Silver Corp., made management changes announcing the appointment of a Senior Vice Presidents, Legal, and Sustainability, and a Senior Vice President, Corporate Development. The company also announced the promotions of its Executive Vice President, Business Development & Growth, a Senior Vice President, Investor Relations, and a Vice President, Mineral Processing  (Cordero project, Chihuahua).
  • Defiance Silver Corp., finalized a six-year agreement that granted the company the rights to conduct surface exploration, drilling, and engineering studies at its Tepal project in Michoacan. The agreement also enables the company to collect essential data required for the submission of permit applications to advance the development of the project. Defiance will make annual cash payments indexed to the annual inflation in Mexico, and issue common shares with a total annual value of USD $40K/year to the surface rights holder. For the upcoming year, the company will issue 201,452 common shares at a deemed price of CAD $0.27per share to the counterparty. Over the six-year terms, the total number of shares issued will not exceed 1.4M.
  • Aura Minerals Inc., presented voting results of its annual general meeting of shareholders (Aranzazu mine, Zacatecas).
  • Guanajuato Silver Company Ltd., confirmed that the expiry date for the 4,550,000 warrants issued to Ocean Partners UK Ltd., is March, 2028 (Cubo, Valenciana, and San Ignacio mines, Guanajuato).
  • Osisko Development Corp., appointed an independent Director to its Board of Directors effective immediately (San Antonio Gold project, Sonora).
  • Mithril Silver and Gold Limited announced the retirement of two Non-Executive Directors with effect from 30 June 2025 (Copalquin project, Durango).
  • Minaurum Gold Inc., appointed Ruben Molina as Senior Project Manager for the Alamos Silver project, Sonora and three additional seasoned geologists will be joining who previously worked alongside him, including in the capacities as Chief Geologist, Senior Geologist-Prospecting, and Resource Modeling Geologist.
  • Equinox Gold Corp., and Calibre Mining Corp., completed its previously announced business combination pursuant to which Equinox has acquired all of the issued and outstanding common shares of Calibre (Los Filos mine, Guerrero).
  • Colibri Resource Corporation reported voting results of its annual general meeting of shareholders (Pilar project, Sonora).
  • Elemental Altus Royalties Corp., announced changes to its Board of Directors effective immediately, reflecting the acquisition of a 37.8% stake in the company by Tether Investments S.A. de C.V. , and the right to acquire a total of 51.8% of the company’s issued and outstanding common shares (Mercedes mine, Sonora).
  • MAG Silver Corp., presented voting results of its annual general and special meeting of shareholders (Juanicipio mine, Zacatecas).
  • Torex Gold Resources Inc., announced results of its annual general and special meeting of shareholders (El Limon Guajes mine complex, Guerrero).
  • Gold Resource Corporation appointed a new member to its Board of Directors (Don David Gold mine, Oaxaca).
  • Sierra Madre Gold and Silver Ltd., announced voting results of its annual general meeting of shareholders (La Guitarra mine, Estado de Mexico).
  • Royalties Inc., achieved a significant legal victory through its subsidiary, Minera Portree de Zacatecas S.A. de C.V. (MPZ), in a commercial lawsuit against Capstone Copper Corp. The Third Commercial Court of Zacatecas ruled in favor of MPZ, declaring a 2019 rights assignment contract invalid and reaffirming MPZ’s entitlement to a 2% net smelter royalty from mining concessions at the Cozamin mine in Zacatecas. The court ordered Capstone and its subsidiary to pay royalties for various concessions, with amounts to be determined later, while a claim for damages was dismissed due to insufficient evidence.
  • Aloro Mining Corp., announced voting results of its annual general and special meeting in which the approval of the sale of its Los Venados property in Sonora, was approved by the shareholders of the company.
  • MAG Silver Corp., reported that Institutional Shareholders Services Inc., recommended that MAG shareholders vote for the special resolution approving the previously announced plan of arrangement with Pan American Silver Corp (Juanicipio mine, Zacatecas).
  • Prime Mining Corp., announced voting results of its annual general and special meeting of shareholders. “The company is targeting the delivery of a Preliminary Economic Assessment reflecting a high return, high margin, low capital and long-life project at Los Reyes project in Sinaloa, based on drilling to the end of 2024 and extensive technical work completed to-date. The PEA is targeted for completion in Q3, 2025”.
  • Silver Viper Minerals Corp., completed the acquisition of the Cimarron project in Sinaloa from CSCA Holdings Inc., by issuing 9,000,000 of common shares at a price of CAD $0.20 per share.
  • Infinitum Copper Corp., signed a definitive agreement to sell its interest on Adelita project, Sonora. The company sold its Mexican subsidiary, Exploraciones Margarita S.A. de C.V., which holds an 80% interest in the Cerro Grande property in Sonora to Kenadyr Metals Corp. The transaction involves Kenadyr acquiring 100% of the subsidiary for CAD $100K in cash and 1,842,719 common shares. Additionally, if Kenadyr raises up to CAD $3.5M in equity financing within 12 months post-closing, Infinitum will receive additional shares to maintain a 9.0% ownership in Kenadyr. The deal is subject to TSX Venture Exchange and shareholder approvals.

ON SOCIAL RESPONSIBILITY

  • Guanajuato Silver Company Ltd., reported that it has been recognized as a Mexico´s Socially responsible Enterprise in 2024, reflecting its strong community engagement and environmental efforts. The company met high standards in environment, social responsibility, and governance (Cubo, Valenciana, and San Ignacio mines, Guanajuato).
  • MAG Silver Corp., published its fourth annual sustainability report. MAG Silver’s 2024 sustainability efforts are focused on safety, environmental protection, and social responsibility. The company reported a decline in safety incidents, invested over 102,000 hours in safety training, and achieved zero significant environmental incidents. They developed human rights due diligence tool and have a positive social license at the Larder Project. Additionally, their board now includes 38% women directors, surpassing their diversity targets. Overall, MAG emphasizes safety, environmental stewardship, social engagement, and diversity to support its long-term sustainability goals(Juanicipio mine, Zacatecas).

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, the imposing panoramic view of the Sierra Madre Occidental in Chihuahua, Mexico. Photo taken by Miguel A Heredia.

The Mining and Exploration News in Mexico: Highlights on the First Week of June, 2025

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Low-angle quartz veins hosted in Mn-rich volcanic rocks

By Miguel A Heredia

During the 23th week of the year (June 02nd to June 08th 2025), at least 26 press releases were announced by companies working in Mexico, with twelve disclosing deals and corporate issues, seven announcing financing rounds, two reporting resources and development of their properties, two informing on exploration results, one communicating production results, one discussing social issues, and one commenting on Mexican issues.  ON MEXICO ISSUES, Endeavour reported the best drilling intercepts in Mexico on the first week of June, 2025. ON EXPLORATION, In Durango, Pinnacle presented underground sampling results from its Potrero project, and Mithril released high-grade surface and underground sampling results from its Copalquin project.  ON MINING, Orogen reported Q1, 2025 production and financial results (Ermitaño mine, Sonora). ON FINANCING, Defiance Silver announced brokered  Listed Issuer Financing Exemption (LIFE) offering for gross proceeds of up to CAD $8M, the same that later on was upsized to CAD $13M (San Acacio project, Zacatecas).  Vizsla Royalties entered into a bought deal agreement with CIBS Capital Market to sell 27,400,000 common shares for gross proceeds of CAD $54.8M (Panuco project, Sinaloa). Silver Viper announced a non-brokered private placement for gross proceeds of up to USD $3.5M (La Virginia project, Sonora). Mammoth announced a non-brokered private placement of up to 30,000,000 units for gross proceeds of up to CAD $750K (Tenoriba project, Chihuahua). Impact Silver closed a final tranche of its previously announced non-brokered private placement for gross proceeds of CAD $1,275,320 (Plomosas mine, Chihuahua). Silver Storm announced that it closed the first tranche of its previously announced brokered LIFE financing for gross proceeds of CAD $10,541,050, including a CAD $1M investment by Eric Sprott (La Parrilla mine, Durango). ON RESOURCES AND DEVELOPMENT, Endeavour Silver reported positive results from its drilling exploration program at Pitarrilla project, Durango. Orla Mining delivered initial underground mineral resource estimate for its Camino Rojo property in Zacatecas.  ON DEALS AND CORPORATE ISSUES, Endeavour reported voting results of its annual general meeting of shareholders (Guanacevi mine, Durango). Orogen announced its notice of annual general and special meeting of shareholders (Ermitaño mine, Sonora). Prismo Metals appointed its President, effective immediately (Palos Verdes project, Sinaloa). Reyna Silver announced the resignation of one of its Directors (Batopilas project, Chihuahua). Santacruz declared that it has applied to, and received from the British Columba Securities Commission, a temporary Management Cease Trade Order (Zimapan mine, Hidalgo). Sierra Metals announced that it called an annual general and special meeting of shareholders (Bolivar mine, Chihuahua). Sierra Madre extended a USD $5M loan with First Majestic by a year, pushing the due date to May 2027 (La Guitarra mine, Estado de Mexico).  Vizsla Royalties entered into a royalty purchase agreement with Grupo Minero Bacis to acquire an additional 3% NSR on certain concessions comprising the Panuco-Copala project in Sinaloa. Silver Viper announced the resignation of its CFO and announced the engagement of ICP Securities Inc., to provide automated market making services (La Virginia project, Sonora).   Defiance Silver signed a long-term surface agreement for its Tepal project in Michoacan; restructured its option agreement to acquire a 2.5% NSR from Minera Tepal, and extended the final payment on the San Acacio project in Zacatecas to June 20, 2026, with no changes to economic terms. Mammoth entered into a strategic alliance with RM Minerias, a private company focused on acquiring, developing and restarting to commercial production, mineral extraction and processing facilities in Mexico (Tenoriba project, Chihuahua). Bear Creek presented voting results from its annual general meeting of shareholders and announced the appointment of officers (Mercedes mine, Sonora). ON SOCIAL RESPONSIBILITY, Aura released its 2024 sustainability report (Aranzazu mine, Zacatecas).  

ON MEXICO ISSUES

  • Endeavour Silver Corp., reported the best drilling intercepts in Mexico on the first week of June 2025. Details are shown in the table below:

ON EXPLORATION

  • Pinnacle Silver and Gold Corp., presented underground sampling results from the Pinos Cuates mine at its Potrero project in Durango. The systematic channel sampling of the underground workings has defined lens of high-grade gold and silver mineralization, with individual samples returning up to 37.3 g/t Au and 346 g/t Ag. Composite channel sampling at Pinos Cuates mine returned assays up to 19.4 g/t Au and 266 g/T Ag over 4.1m, including 37.3 g/t Au and 346 g/t Ag over 0.6m, and 31.2 g/t Au and 395 g/t Ag over 0.5m. Underground mapping on the Dos de mayo vein revealed that the vein-breccia system is wide and strong with exposed widths of 10.46m and 8.5m on the upper and lower level respectively, but it still needs to drill to find the full extent. Surface mapping on the Dos de mayo vein system extended the mineralized zone over 1.6km, with grab samples strikingly high gold and silver results like one spot with 13.2 g/t Au and 2,280 g/t Ag, and 5.2 g/t Au and 745 g/t Ag. Visible gold and ginguro textures were observed during the mapping field work. These results demonstrate strong exploration potential and the possibility for near-term development of the high-grade mineralization.
  • Mithril Silver and Gold Limited released high-grade mineralization surface and underground sampling results from target 5 along a 1.6km vein corridor within its Copalquin project in Durango, with grades exceeding 1% copper, lead, and zinc, along with significant Au and Ag in a large area. Highlights channel samples results include 2.84 g/t Au and 777 g/t Ag over 0.8m (Mina Apomal); 5.36 g/t Au and 706 g/t Ag over 0.5m (Apomal Norte); 2.58 g/t Au and 716 g/t Ag over 0.8m (Dulces Nombres); 1.48 g/t Au, 236 g/t Ag, 0.17% Cu, 1.7% Pb, and 0.06% Zn over 1m (Veta Azul); 0.04 g/t Au, 8 g/t Ag, 0.03% Cu, 0.1% Pb, and 1.3% Zn over 1m (Veta Azul); 0.07 g/t Au, 41 g/t Ag, 1.6% Cu, 19 ppm Pb, and 61 ppm Zn over 1m (Apomal); and 0.06 g/t Au, 145 g/t Ag, 0.1% Cu, 1.1% Pb, and 0.05% Zn over 0.85m (Duraznito). These findings reinforce the district’s potential for multiple high-grade deposits and support ongoing resource development efforts Drilling at this target area is set for next quarter after finishing up work in the main resource zone and updating their geological model.

ON MINING

  • Orogen Royalties Inc., presented Q1, 2025 production and financial results. A total of 270,203 tonnes were processed at Ermitaño Mine by First Majestic Silver Corp., with grades of 58 g/t Ag and 2.59 g/t Au and metallurgical recoveries of 68% and 95% respectively. The company reported a net income from operations of CAD $1.8M; royalty revenue of CAD $2.1M from 497 Gold Equivalent Ounces (GEO´s) on average price of USD $2,820 per ounce as a result of the 2% NSR that Orogen holds at Ermitaño; revenue from prospect generation activities of CAD $0.5M; G&A expenses of CAD $1-7M; cash flow of CAD $1.2M; and working capital of CAD $28M at March 31, 2025.

ON FINANCING

  • Defiance Silver Corp., announces brokered  Listed Issuer Financing Exemption (LIFE) offering for gross proceeds of up to CAD $8M for the sale of up to 32,000,000 units at a price of CAD $0.25 per unit. The company also grants the agent an option, exercisable in full or in part up to 48 hours prior to the closing of the Marketed Offering, to sell up to an additional 8,000,000 units at the offering price for additional gross proceeds of up to CAD $2M. Later on, the company upsized the offering to 52,000,000 units at a price of CAD $0.25 per unit for gross proceeds of up to CAD $13M. Concurrent with the brokered offering, the company plans to complete a non-brokered private placement of up to 6,000,000 units of the Company (the “NB Units”, and collectively with the Units, the “Offered Securities”) at a price of CAD $0.25 per NB Unit for additional gross proceeds of up to CAD $1.5M. Defiance plans to use the gross proceeds to complete a Mineral Resource Estimate at its San Acacio project in Zacatecas, to make periodic cash option payments on its Tepal project in Michoacan, and to provide general working capital to support operations.
  • Vizsla Royalties Corp., entered into a bought deal agreement with CIBS Capital Market to sell 27,400,000 common shares at a price of CAD $2 per common share for gross proceeds of CAD $54.8M. Gross proceeds will be used to repurchase 50% of the 3.0% NSR for USD $1.95M and will purchase the remaining 50% of the 3.0% NSR for USD $38.05M, for a total cash consideration of USD $40M subject to potential adjustment in customary circumstances (Panuco project, Sinaloa).
  • Silver Viper Minerals Corp. announced a non-brokered private placement for gross proceeds of up to USD $3.5M from the sale of 23,333,334 units at a price of USD $0.15 per unit. Net proceeds will be used for drilling and other exploration activities at La Virginia project in Sonora, and for working capital and other general corporate purposes.
  • Mammoth Resources Corp., announced a non-brokered private placement of up to 30,000,000 units at a price of CAD $0.025 per unit for gross proceeds of up to CAD $750K. Net proceeds will be used to advance its Tenoriba project in Chihuahua, evaluate potential acquisitions, and support working capital needs.
  • Impact Silver Corp., closed a final tranche of its previously announced non-brokered private placement for gross proceeds of CAD $1,275,320 from the issuance of 460K LIFE units at a price of CAD $0.20 per unit, and from the issuance of 6,574,000 units at a price of CAD $0.18 per unit. With the first tranche closing of CAD $3,930,711, this brings the total oversubscribed financing to CAD $5,206,031. Impact Silver plans to use the net proceeds to accelerate exploration activity at its Plomosas high-grade zinc-lead-silver property in Chihuahua, further develop its prolific silver assets at its legacy Royal Mines of Zacualpan district in Estado de Mexico, as well as invest in operational improvements to improve productivity and throughput. Exploration activities include sampling, target definition, and drilling with the intention of expanding the existing JORC mineral resource at Plomosas mine where exploration potential is exceptional along a 6 km-long structure.  
  • Silver Storm Mining Ltd., announced that it closed the first tranche of its previously announced brokered LIFE financing for gross proceeds of CAD $10,541,050 from the sale of 81,085,000 units at a price of CAD $0.13 per unit, including a CAD $1M investment by Eric Sprott. Net proceeds will be used for the procurement of La Parrilla mine processing flotation cells; to commence rehabilitation work of the La Parrilla processing facility including equipment purchase and refurbishment, labour, and supplies; to order long lead items including deposits on mining equipment and ventilation fans; to fund ongoing operations for the next twelve months; and for general corporate and working capital purposes.

ON RESOURCES AND DEVELOPMENT

  • Endeavour Silver Corp., reported positive results from its drilling exploration program at Pitarrilla project, Durango. Drilling from surface and underground has been successful in intersecting high-grade silver, zinc and lead mineralization and provides additional confidence required to upgrade existing mineral resources. Drilling highlights are shown in the table below:
  • Orla Mining Ltd., delivered initial underground Mineral Resource Estimate (MRE) for its Camino Rojo property in Zacatecas. Measured and indicated mineral resources are 50.1M tonnes of 2.45 g/t Au, 10.6 g/t Ag, and 0.25% Zn (2.58 g/t AuEq), totaling 3.95M Oz Au, 17.05M Oz Ag, and 278M Lb Zn (4.16M Oz AuEq). Inferred mineral resources are 5.6M tonnes of 2.21 g/t Au, 10.9 g/t Ag, and 0.21% Zn (2.33 g/t AuEq), totaling 0.4M Oz Au, 1.95M Oz Ag, and 26M Lb Zn (0.42M Oz AuEq). Orla´s strategy is “to advance the initial underground MRE towards possible future construction decision. This include additional exploration, development planning for an exploration drift to allow for tighter spaced underground drilling, flowsheet design, further metallurgical testing, engineering studies, and permitting activities”.

ON DEALS AND CORPORATE ISSUES

  • Endeavour Silver Corp., reported voting results of its annual general meeting of shareholders and reported the retirement of one of its directors (Guanacevi mine, Durango).
  • Orogen Royalties Inc., announced its notice of annual general and special meeting of shareholders. Orogen will hold its Meeting on June 27, 2025, at 10:00 a.m. (Pacific time)  (Ermitaño mine, Sonora).
  • Prismo Metals Inc., appointed its President, effective immediately (Palos Verdes project, Sinaloa).
  • Reyna Silver Corp., announced the resignation of one of its Directors (Batopilas project, Chihuahua).
  • Santacruz Silver Mining Ltd., declared that it has applied to, and received from the British Columba Securities Commission, a temporary Management Cease Trade Order on the basis that it was unable to file its interim financial statements, accompanying management’s discussion and analysis and required certifications for the interim period ended March 31, 2025 (Zimapan mine, Hidalgo).
  • Sierra Metals Inc., announced that it called an annual general and special meeting of shareholders to be held on July 29, 2025 (Bolivar mine, Chihuahua).
  • Sierra Madre Gold and Silver Ltd., extended a USD $5M loan with First Majestic Silver Corp., by a year, pushing the due date to May 2027. They’re paying 15% interest annually but only interest monthly, with the first six months’ interest deferred in the amount of USD $365K.  This extra time might help them boost capacity at their Guitarra silver-gold mine in Estado de Mexico and speed up exploration efforts. They also granted stock options to new employees and consultants, to purchase an aggregate of 950,000 common shares at a price of USD $0.69 per share for a period of 5 years from the grant date.
  • Vizsla Royalties Corp., entered into a royalty purchase agreement with Grupo Minero Bacis S.A. de C.V., to acquire an additional 3% NSR on certain concessions comprising the Panuco-Copala project in Sinaloa, for a total cash consideration of USD $40M. With this the company increased its total NSR to 3.5%.
  • Silver Viper Minerals Corp., announced the resignation of its CFO and declared that it has initiated a search for a permanent replacement. In the interim, Steve Cope, CEO, will assume the responsibilities of the CFO on a temporary basis until a successor is appointed. The company also announced the engagement of ICP Securities Inc., to provide automated market making services (La Virginia project, Sonora).
  • Defiance Silver Corp., signed a long-term surface agreement for its 100% owned Tepal project in Michoacan, allowing exploration and drilling, and engineering studies over the next six years. This agreement marks a key milestone for Defiance, providing the necessary certainty to advance their work in the project area.  The company also has restructured its option agreement to acquire a 2.5% SR from Minera Tepal S.A. de C.V., with a revised payment schedule starting July 2025. Additionally, an extension for the final payment on the San Acacio land package in Zacatecas has been secured, moving the due date to June 30, 2026, with no changes to economic terms.
  • Mammoth Resources Corp., entered into a strategic alliance with RM Minerias, a private company focused on acquiring, developing and restarting to commercial production, mineral extraction and processing facilities in Mexico (Tenoriba project, Chihuahua). 
  • Bear Creek Mining Corporation presented voting results from its annual general meeting of shareholders and announced the appointment of officers (Mercedes mine, Sonora).

ON SOCIAL RESPONSIBILITY

  • Aura Minerals Inc., released its 2024 sustainability report, in which the company highlighted the progress in promoting safety, responsibility, sustainability, and innovation. The sustainability report disclosures the financial, environmental, and social performance during 2024. Highlights include a strengthened data and cyber security infrastructure for AI integration, R $6.1M investment in community development, reassessment of emissions inventories per Green House Gas (GHG) Protocol, compliance with Responsible Gold Mining Principles, and sourcing 40% of purchases from local suppliers. The company was recognized for gender equity efforts and earned Great Place to Work certification with a 78% favorability score (Aranzazu mine, Zacatecas). 

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, low-angle veins hosted in Mn-rich volcanic rocks in a project in the Sonoran Desert. Photo taken by Miguel A Heredia.