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

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 Second Week of April, 2026

Quartz blade texture

By Miguel A Heredia

During the 15th week of the year (April 6 to April 12, 2026), at least 21 press releases were issued by companies operating in Mexico, along with one news article published by the media. Of these, five related to deals and corporate matters, five reported production results, four presented exploration results, three addressed Mexico-related issues, three announced financing activities, and two covered resource and development updates. ON MEXICO ISSUES, Vizsla provided an update on the situation in Concordia, Sinaloa, confirming that nine colleagues have been found deceased and one remains still missed. Mithril reported an incident where their CEO and two employees experienced on-ground gunfire damage to their plane while flying near Chihuahua, about 30 km from their Copalquin project site in Durango. Rescue operations continue amidst extreme conditions at the Santa Fe mine located in the Municipality of El Rosario, Sinaloa. Last April 8th, authorities reported the successful rescue of a second miner found alive and confirmed the discovery of a third worker who had perished, while the search persists for the final miner who remains trapped. ON EXPLORATION, In Sonora, Tocvan mobilized a second RC drill rig to its flagship Gran Pilar Gold-Silver Project, to accelerate their fully funded 20,000m drilling program by enabling parallel testing of multiple high-priority targets, primarily in the South Block area, and Masivo Silver completed and extended its first diamond drill hole (CC-26-001) at its Cerro Colorado project, intersecting a significant 35.1m interval of visible mineralization characterized by quartz veinlets and sulphide minerals such as pyrite, sphalerite, freibergite, galena, and minor chalcopyrite, accompanied by a strong sericite -smectite alteration.  In Chihuahua, Kingsmen acquired 100% interest in the Claudia 2 mining concession, free of any royalty, at its Las Coloradas project.  In Durango, Mithril released drill results from its Copalquin project, confirming high grade and widespread silver and gold at Target 3. ON MINING, Endeavour Silver reported Q1, 2026 results from their Mexican operations. Aura announced preliminary Q1, 2026 production results from its Aranzazu mine in Zacatecas. First Majestic reported Q1, 2026 production results from their underground mines in Mexico.  Teck informed that it plans to release Q1, 2026 results on April 23, 2026. Torex Gold reported Q1, 2026 AuEq production of 100,874 Oz and AuEq sales of 109,222 Oz. ON FINANCING, Avino announced its intention to make a Normal Course Issuer Bid to repurchase, for cancellation up to an aggregate of 8,428,566 common shares. Sonoro Gold announced a private placement for gross proceeds of CAD $11M. Vortex Minerals closed the first tranche of its previously announced non-brokered private placement for gross proceeds of CAD $479,900. ON RESOURCES AND DEVELOPMENT, Heliostar drilled 101m of 5.34 g/t Au in the Ana Paula Expansion Zone in Guerrero; to date, it has completed 84 holes and 28,318m as part of its ongoing 2025-26 drill program at Ana Paula project. Orogen Royalties, which holds a cash-flowing 2% net smelter return royalty at Ermitaño—a property operated by First Majestic in Sonora—announced an updated Mineral Reserve and Resource Estimate.  ON DEALS AND CORPORATE ISSUES, Mexican Gold appointed Holgren Lai as Chief Financing Officer of the company. Torex Gold announced the appointment of Jacques Perron to its Board of Directors. Mexican Gold and Alcon entered into an arrangement agreement to create a diversified precious metals exploration company. Pacifica Silver informed that it has adopted a semi-annual financial reporting, effective immediately. Sonoro Gold acquired a 100%binterest in the Diana mining concession, located adjacent to the central-eastern boundary of its Cerro Caliche project in Sonora. ON SOCIAL RESPONSIBILITY, No relevant news.

ON MEXICO ISSUES

ON EXPLORATION

  • Tocvan Announces Addition of Second Drill Rig and Accelerates High Priority Drill targets at Flagship Gran Pilar Gold-Silver Project: Tocvan Ventures Corp
  • Masivo Silver Extends and Completes First Hole at Cerro Colorado Project: Masivo Silver Corp
  • Kingsmen Acquires 100% Ownership of the Claudia 2 Claim, Adding Never-Drilled Saddle target and District-Scale Extension to Las Coloradas Silver-Gold Project: Kingsmen Resources Ltd
  • Mithril Confirms High-Grade and Widespread Silver and Gold at target 3, Copalquin Project: Mithril Silver and Gold Limited

ON MINING

ON FINANCING

  • Avino Announces Normal Course Issuer Bid for common shares: Avino Silver & Gold Mines Ltd
  • Sonoro Gold Announces Fully-Committed $11 Million Private Placement & 50,000 METER Drilling Program: Sonoro Gold Corp
  • Vortex Metals Closes First Tranche of Non-Brokered Private Placement and Announces Warrant Extension: Vortex Metals Inc

ON RESOURCES AND DEVELOPMENT

  • Heliostar Drills 101 Metres Grading 5.34 g/t Gold in the Ana Paula Expansion Zone: Heliostar Metals Ltd
  • Orogen Royalties Announces Mineral Reserve and Resource Update on Producing Ermitaño Royalty: Orogen Royalties Inc
  • Sonoro Gold Announces Further Expansion of Cerro Caliche Gold Property: Sonoro Gold Corp

ON DEALS AND CORPORATE ISSUES

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 displaying boiling texture in a low-sulphidation epithermal vein system in Guanajuato, Mexico. Photo taken by Miguel A Heredia.