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The Mining and Exploration News in Mexico: Highlights on the Third Week of May, 2026

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Quartz Vein Displaying Boiling Texture

By Miguel A Heredia

During the 21st week of the year (May 18 to May 24, 2026), at least 31 press releases were issued by companies operating in Mexico, and 1 news published by the media. Of these, twelve related to deals and corporate matters, five addressed Mexican-related issues, four covered resource and development updates, three reported production results, three presented exploration results, three announced financing activities, and two discussing social issues.  ON MEXICO ISSUES, Almaden provided an update to the international arbitration proceedings under the Comprehensive and Progressive Agreement for Trans-Pacific Partnership with the United Mexican States. The Federal Mexican Government, through the Secretariat of Economy eliminates one procedure and simplifies 42 for mining investment. Sierra Madre received approval from the the Comisión Federal de Competencia Económica (COFECE) for the acquisition of the Del Toro Silver mine in Zacatecas. Mexican courts ruled that Capstone Copper owes unpaid royalties to Minera Portree de Zacatecas, S.A. de C.V (Royalties Inc) since 2019 on the Cozamin Mine, Zacatecas. Oroco and GR Silver reported the best drilling intercepts in Mexico on the third week of May, 2026. ON EXPLORATION, In Sonora, Masivo Silver informed that it completed its Phase 1 drill program at Cerro Colorado project, which consisted of seven holes totaling 1,601m, and JV Questcorp-Riverside reported that they have completed an expanded  aeromagnetic drone survey at the La Union project. ON MINING, IMPACT Silver and Sierra Madre reported Q1, 2026 operational and financial results. Starcore reported production and financial results for the four fiscal quarter ended April 2026. ON FINANCING, Vortex notified further extension of its previously announced non-brokered private placement. Sonoro Gold announced a non-brokered private placement for gross proceeds of CAD $10M. Kootenay informed that it intends to complete a non-brokered private placement for gross proceeds of up to CAD $500K. ON RESOURCES AND DEVELOPMENT, GR Silver released the best ever drill results at its San Marcial project in Sinaloa in hole SMS26-04, which intersected 45.1 m of 1,623 g/t Ag, Including 8.25 m of 8,579 g/t Ag,. Oroco reported drill results from its Santo Tomas project in Sinaloa. Silverco filed a NI 43-101 Technical Report for its Cusi mine, Chihuahua. Silver Storm released drill results from the C550 and C535 Zones within its Parrilla mine complex in Durango, and expands its 2026 drilling campaign by 9,000m.  ON DEALS AND CORPORATE ISSUES, Alamos Gold announced multiple management appointments, further strengthening its senior leadership team. Torex Gold announced the appointment of Dan Rollins as Chief Financial Officer. Minera Alamos has provided its notice of intent to exercise its option to repurchase a portion of the net smelter return royalty equal to 0.75% on the Cerro de Oro project located in northern Zacatecas. Vizsla appointed Dave D ´Antonio as Senior Vice President of Technical Services. Silver Spruce granted stock options to certain directors, officers, employees and consultants. Silverco completed its previously announced acquisition of Nuevo Silver Inc. Silver Tiger announced that the Toronto Stock Exchange has approved the listing of the Company’s common shares for trading on the TSX. Vizsla Silver appointed Guillermo Hernandez as Vice President Exploration and promotes Jesus Velador as Chief Geologist. GR Silver announced a celebration of Life for founder Márcio Fonseca. Silver Wolf announced adoption to semi-annual financial reporting. Americas Gold and Silver reached an agreement with Sprott Mining to terminate the remaining obligation under the existing Silver Delivering Agreement in exchange for shares of the company. GR Silver provided a corporate update following the exceptional drill results at San marcial within its Plomosas project, Sinaloa.  ON SOCIAL RESPONSIBILITY, Aura Minerals announced its 2025 Sustainability Report promoting safety, responsibility, sustainability, and innovation, prepared in with reference to Global Reporting Initiative standards. Heliostar published its inaugural Sustainability Report covering the 2025 fiscal year.

ON MEXICO ISSUES

  • Almaden Provides Update on Arbitration Process with Mexico Increased Damages Award Presented: Almaden Minerals Ltd
  • Federal Government Eliminates One Procedure and Simplifies 42 for Mining Investments:   Chihuahua al Día – Noticias
  • Mexican Courts Rule That Capstone Copper Owes Unpaid Royalties Since 2019 on the Cozamin Mine-Pending Amparo: Royalties Inc
  • Sierra Madre Receives Mexican Antitrust Approval for the Acquisition of the Del Toro Mine: Sierra Madre Gold and Silver Ltd
  • Oroco Resource Corp., and GR Silver Mining Ltd reported the best drilling intercepts in Mexico on the third week of May, 2026. Details are shown in the table below:

ON EXPLORATION  

ON MINING

ON FINANCING

ON RESOURCES AND DEVELOPMENT

  • GR Silver Reports Its Best Ever Drill Results at San Marcial: 45.1 m at 1,623 g/t Ag, Including 8.25 m at 8,579 g/t Ag, in Hole SMS26-04: GR Silver Mining Ltd
  • Oroco Intersects 228 m of 0.49% CuEq and 212 m of 0.44% CuEq at Santo Tomás: Oroco Resource Corp
  • Silverco Mining Files NI 43-101 Technical Report for the Cusi Project PEA: Silverco Mining Ltd
  • Silver Storm Demonstrates Resource Growth Potential at the C550 Zone, Expands the 2026 drilling campaign by 9,000m: Silver Storm Mining Ltd

ON DEALS AND CORPORATE ISSUES

ON SOCIAL RESPONSIBILITY

Content like what you have just read can be seen at https://gambusinoprospector.com/ and at LinkedIn’s Mexico Mineral Exploration Group.

On the picture below, a quartz vein displaying boiling texture in a project in Sonora, Mexico.  Photo taken by Miguel A Heredia.

The Mining and Exploration News in Mexico; Highlights on the First Week of April 2026

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By Jorge Cirett

During the 14th week of the year (March 30th to April March 5th, 2026), companies working in Mexico released 25 press releases. Five companies informed on early-stage property work on four properties, four companies presented quarterly and/or full-year 2025 reports one provided 2026 guidance and one more provided Q1 2026 results. One Company updated on a financing round, another one informed on a revolving credit facility and one more announced trading on a new market. Three companies presented drilling results on their advanced projects and one more initiated drilling, one more announced increased resources and two more reported updated MREs.  One company is to change name. ON MEXICO ISSUES, no relevant news. ON EXPLORATION, in Sonora, Tocvan Ventures encountered gold mineralization in RC drilling one km from the main zone at Gran Pilar; Questcorp Mining and Riverside Resources commenced phase II exploration at La Unión; Algo Grande Copper reported drilling results from Adelita. ON MINING, Americas Gold and Silver (Cosalá, Sinaloa), Golden Minerlas (sold Velardeña, Durango), Dyna Resource (San José de Gracia, Sinaloa) and Santacruz Silver presented full year 2025 results, while Alamos Gold (Santana, Sonora) provided Q1 2026 results. Royal Gold provided 2026 guidance. ON FINANCING, three companies informed on financing movements: Minera Alamos executed a term sheet for a US$75 M revolving credit facility. Silver Spruce Resources closed the C$739 K first tranche of a non-brokered private placement. Elemental Royalty is to commence trading on the Toronto Stock Exchange.  ON RESOURCES AND DEVELOPMENT, Americas Gold and Silver informed on drilling results at Cosalá, in Sinaloa. Minaurum Silver delivered drill results from the resource expansion drilling at Alamos Silver in Sonora. First Majestic Announced 2025 mineral resource estimates for Los Gatos (Chihuahua), Santa Elena (Sonora), San Dimas (Sinaloa) and La Encantada (Coahuila), for a consolidated 843 M Oz AgEq. Zacatecas Silver commenced drilling at its Zacatecas Silver project in Zacatecas. Southern Silver released drilling results from Cerro Las Minitas in Durango. Capitan Silver delivered results from RC drilling at Cruz de Plata in Durango. Aura Minerals Reported mineral resource estimates, with 246,400 Oz Au, 278.2 M Lb Cu, 7 M Oz Ag in reserves, 180,800 Oz Au, 185.3 M Lb Cu, 4.5 M Oz Ag in measured and indicated resources and 86,120 Oz Au, 104.9 M Lb Cu, 2,7 M Oz Ag in inferred resources. ON DEALS AND CORPORATE ISSUES, Axo Copper is to change name to Axo Metals. ON SOCIAL RESPONSIBILITY, no relevant news.

ON MEXICO ISSUES

No Relevant News

ON EXPLORATION

  • Tocvan Discovers New Gold-Silver Zone 1,600 Metres from Main Zone at South Block Gran Pilar; First Aggressive Step-Out Drilling Intersects Mineralization from Surface (Gran Pilar, Sonora): Tocvan Ventures
  • Questcorp Mining and Riverside Resources Commence Phase 2 Exploration Program at the La Union Project, Sonora, Mexico (La Unión, Sonora): Questcorp Mining
  • Riverside Resources and Questcorp Launch Phase 2 Exploration Program at La Union Project, Sonora, Mexico (La Unión, Sonora): Riverside Resources
  • Pacifica Silver Provides Exploration Update at Claudia Silver-Gold Project; Grants Incentive Stock Options (Claudia, Durango): Pacifica Silver
  • Algo Grande Reports Results from Completed Phase I Drill Program at Cerro Grande Skarn (Adelita, Sonora): Algo Grande Copper

ON MINING

  • Americas Gold and Silver Announces Strong Full-Year 2025 Results and 2026 Guidance with ~30% Annual Production Growth (Cosalá, Sinaloa): Americas Gold and Silver
  • Golden Minerals Reports Full Year 2025 Results (exited Mexico): Golden Minerals
  • DynaResource Reports Year End 2025 Results at the San Jose de Gracia Mine, Net Income for 2025 of $3.8 M, and Adjusted EBITDA for 2025 of $12.1 M (San José de Gracia, Sinaloa): DynaResource  
  • Royal Gold Provides 2026 Guidance and Five Year Outlook and Announces Further Debt Repayment and Publication of Asset Handbook (royalty on Cosalá, Sinaloa): Royal Gold
  • Santacruz Silver Reports Year End 2025 Financial Results (Zimapán, Hidalgo): Santacruz Silver Mining  
  • Alamos Gold Provides Notice of First Quarter 2026 Results and Conference Call, and Annual General Meeting of Shareholders (Santana, Sonora): Alamos Gold

ON FINANCING

  • Minera Alamos Moves to Strengthen Balance Sheet with Executed Term Sheet for US$75 Million Revolving Credit Facility from Scotiabank and National Bank (Cerro de Oro, Zacatecas): Minera Alamos
  • Silver Spruce Resources Inc. Announces Close of $739,250 First Tranche of Non-Brokered Private Placement and Extension (Pino de Plata, Chihuahua): Silver Spruce Resources
  • Elemental Royalty to Commence Trading on the Toronto Stock Exchange (Mercedes, Sonora): Elemental Royalty

ON RESOURCES AND DEVELOPMENT

  • Americas Gold and Silver Announces New Major Discoveries in Idaho and Mexico and a Strong 2025 Resource & Reserve Update including a 19% Year Over Year Increase in M&I Mineral Resources and 21% Increase in M&I Grades at Galena (Cosalá, Sinaloa): Americas Gold and Silver
  • Minaurum Drills High-Grade Silver on the Quintera Vein Zone at the Alamos Silver Project: 5.30 m of 570 g/t Ag, including 2.50 m of 1,024 g/t Ag and 5.80 m of 581 g/t Ag: Minaurum Silver
  • First Majestic Announces 2025 Mineral Reserve and Mineral Resource Estimates: First Majestic Silver
  • Zacatecas Silver Announces Drilling Commencement and Completion of First Hole at El Cristo: Zacatecas Silver
  • Southern Silver Intersects 4.6 metres Averaging 201g/t Ag, 4.5%Pb and 9.8%Zn (557g/t AgEq) at Cerro Las Minitas Project in Durango, México: Southern Silver Exploration
  • Capitan Silver Intersects 1,450.5 g/t Silver Equivalent over 1.5 Metres, Within a Wider Zone of 211.0 g/t Silver Equivalent over 41.1 Metres at the Cruz De Plata Project: Capitan Silver  
  • Aura Reports Updated Mineral Reserves and Mineral Resources For The YearEnded 2025, Highlighting year of Significant Growth in Mineral Reserve and Resource Portfolio: Aura Minerals

ON DEALS AND CORPORATE ISSUES

  • Axo Copper Announces Proposed Name Change to Axo Metals: Axo Copper  

ON SOCIAL RESPONSIBILITY

  • No Relevant News.

On the image below: Specularite, quartz-pyrite(-) and secondary hematite in chloritized volcanosedimentary rocks, HQ core. Picture by Jorge Cirett.