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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 May, 2026

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By Miguel A Heredia

During the 19th week of the year (May 4 to May 10, 2026), at least 27 press releases were issued by companies operating in Mexico. Of these, twelve related to deals and corporate matters, eight reported production results, three presented exploration results, two covered resource and development updates, one addressed Mexico-related issues, and one announced financing activities.  ON MEXICO ISSUES, Orla Mining announced steps it has taken to protect labour rights at its Camino Rojo mine in Zacatecas. ON EXPLORATION, In Sonora, Riverside reported high-grade gold, silver, and base metals assays from Phase 2 Field Work at La Union Project. In Durango, Pinnacle commenced an underground delineation drilling program at its El Potrero project, and Capitan Silver received final interpretative products and reports from its property-wide Airborne Magnetotelluric geophysical survey conducted at its Cruz de Plata project.  ON MINING, Aura, Endeavour, GoGold, Pan American Silver, Torex Gold, Gold Resource, and Gold Royalty reported Q1, 2026 financial and operational results. Discovery Silver announced that it will release its Q1, 2026 financial and operational results on May 14, 2026. ON FINANCING,  Silver Spruce announced extension of non-brokered private placement.  ON RESOURCES AND DEVELOPMENT, Luca Mining released assay results from its ongoing 2026 drilling program at the Tahuehueto mine in Durango. Sonoro announced that it will be completing a two-phased exploration campaign at its flagship Cerro Caliche project in Sonora, including 50,000m of RC drilling, as well as soil and rock sampling programs. ON DEALS AND CORPORATE ISSUES, Angel Wings has undertaken a strategic review of all of its properties, to identify a suitable joint venture partner for its prospective La Reyna project. Aura declared dividend of USD $0.78 per common share based on Q1, 2026 results. Heliostar announced the appointment of Dennis Wilson as Vice President, Health, Safety, Environment, and Sustainability, and Hernan Dorado as Vice President of Operations.  Orogen announced the appointment of Chad Wells to the Board of Directors. Silver Viper completed acquisition of Coneto project, Durango. Orex completed sale of Coneto project, Durango to Silver Viper. Silver Spruce announced Change to Director Slate for its annual general and special meeting of shareholders and reported voting results. Pan America Silver and Torex Gold announced an enhanced shareholder return in 2026 through a combination of dividends and common share repurchases, including capital return. Capitan Silver reported voting results from its annual general and special meeting of shareholders, and adopted a shareholder rights plan and a 10% fixed omnibus equity incentive plan.  Radius Gold announced the adoption of semi-annual financial reporting. ON SOCIAL RESPONSIBILITY, No relevant news.

ON MEXICO ISSUES

  • Orla Mining Takes Action to Protect Labour Rights at Camino Rojo: Orla Mining Ltd

ON EXPLORATION

  • Riverside Resources Reports High-Grade Gold, Silver and Base Metal Assays from Phase 2 Field Work at La Union Project: Riverside Resources Inc
  • Pinnacle Commences Underground Delineation Drilling Program at El Potrero: Pinnacle Silver And Gold Corp
  • Capitan Silver Receives Final Results from Airborne Geophysics Program for the Cruz De Plata Project: Capitan Silver Corp.

ON MINING

ON FINANCING

ON RESOURCES AND DEVELOPMENT

  • Luca Intersects 6.8 Metres of 5.5 g/t Gold Equivalent at Tahuehueto Mine – Further Expanding High-Grade Mineralization Proximal to Existing Workings: Luca Mining Corp
  • Sonoro Gold Commences 50,000 meter Drilling Program: Sonoro Gold Corp

ON DEALS AND CORPORATE ISSUES

  • Angel Wing Sells Ontario Quartz Lake Claims to Kenorland, Advances Corporate Strategy: Angel Wing Metals Inc
  • Aura Declares Dividend of US$0.78 Per Share and US$0.26 Per BDR Based on Q1 2026 Results, Resulting in a Dividend Yield of 4.5% in the LTM: Aura Minerals Inc
  • Heliostar Announces Addition to Management Team and Ana Paula Focused Reorganization: Heliostar Metals Ltd
  • Orogen Royalties Appoints Mr. Chad Wells to the Board of Directors: Orogen Royalties Inc
  • Silver Viper Minerals Completes Sale of the Coneto Silver-Gold Project: Silver Viper Minerals Corp
  • Orex Minerals Inc. Completes Sale of Coneto Silver-Gold Project to Silver Viper Minerals: Orex Minerals Inc
  • Silver Spruce Resources Inc. Announces  Change to Director Slate for Annual General and Special Meeting of Shareholders: Silver Spruce Resources Inc
  • Silver Spruce Resources Inc. Announces Results of Annual and Special Meeting of Shareholders: Silver Spruce Resources Inc
  • Pan American Silver Targets Up to $1 Billion in Shareholder Returns in 2026 Through Enhanced Shareholder Return Framework: Pan American Silver Corp
  • Torex Gold Reports Enhanced Return of Capital Program: Torex Gold Resources Inc
  • Capitan Silver Announces Annual General and Special Meeting and Adoption of Omnibus Equity Incentive Plan and Shareholder Rights Plan: Capitan Silver Corp
  • Radius Gold Adopts Semi-Annual Financial Reporting: Radius Gold Inc

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, a rhyolite flow of the Upper Volcanic Supergroup of the Sierra Madre Occidental in Chihuahua, Mexico.  Photo taken by Miguel A Heredia.