Blog posts

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:

• Mexico´s Best Drilling Intercepts. Third Week of May, 2026: Gambusino Prospector de Mexico SA de CV

ON EXPLORATION  

• Masivo Silver Completes Phase 1 Drill Program at Cerro Colorado and Appoints Chief Financial Officer: Masivo Silver Corp
• Questcorp Mining and Riverside Resources Complete Expanded Drone Aeromagnetic Survey at La Union Project; Questcorp Mining Inc Riverside Resources Inc  

ON MINING

• IMPACT Silver Announces Q1 2026 Financial Results with Revenue Nearly Tripling to $31.2Million and Record Net Income of $11.3 Million: IMPACT Silver Corp
• Sierra Madre Reports Strong Q1 2026 Financial Results, Record Quarterly Revenues: Sierra Madre Gold and Silver Ltd
• STARCORE Reports Fourth Quarter Production Results: Starcore International Mines Ltd

ON FINANCING

• Vortex Metals Announces Further Extension of Non-Brokered Private Placement: Vortex Metals Inc
• Sonoro Gold Announces $10 Million Private Placement: Sonoro Gold Corp
• Kootenay Resources Announces Non-Brokered Private Placement of up to $500,000: Kootenay Resources Inc

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

• Alamos Gold Announces Management Appointments: Alamos Gold Inc
• Torex Gold Announces Appointment of Chief Financial Officer: Torex Gold Resources Inc
• Minera Alamos Announces Partial Repurchase of a Royalty on Its Cerro de Oro Project: Minera Alamos Inc
• Vizsla Silver Appoints Senior Vice President, Technical Services: Vizsla Silver Corp
• Silver Spruce Resources Inc. Announces Grant of Options. Silver Spruce Resources Inc
• Silverco Mining Completes Acquisition of Nuevo Silver to Become the Newest Silver Producer: Silverco Mining Ltd
• Silver Tiger Metals Announces Graduation to the Toronto Stock Exchange: Silver Tiger Metals Inc
• Vizsla Silver Appoints Guillermo Hernandez as Vice President, Exploration & Promotes Jesus Velador to Chief Geologist: Vizsla Silver Corp
• GR Silver Announces a Celebration of Life for Founder Márcio Fonseca: GR Silver Mining Ltd
• Silver Wolf Adopts Semi Annual Financial Reporting: Silver Wolf Exploration Ltd
• Americas Gold and Silver Announces Agreement with Sprott Mining Inc., to Terminate Silver Delivery Agreement: Americas Gold and Silver Corporation
• GR Silver Provides a Corporate Update: GR Silver Mining Ltd

ON SOCIAL RESPONSIBILITY

• Aura Announces its 2025 Sustainability Report: Aura Minerals Inc
• Heliostar Publishes Inaugural Sustainability Report: Heliostar Metals Ltd

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