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

By Jorge Cirett

During the 40^th week of the year (September 28^th to October 4^th, 2026), 16 companies working in Mexico released press releases. Four companies reported on activities at early-stage projects. Two companies reported on quarterly results and one announced an expansion plant update. One company changed trading symbol, and one more closed a financing round. One company reported on metallurgical results and one more on an advanced property drilling results. Four companies reported on deals and corporate issues. ON MEXICO ISSUES, no relevant news. ON EXPLORATION, in Sonora, Tocvan presented drilling results from Gran Pilar, Algo Grande Copper secured a surface agreement for Adelita and Masivo Silver reported on drilling at Cerro Colorado. In Chihuahua, Centenario Gold begins drilling at Los Reyes. ON MINING, Sierra Madre Gold and Silver updated on the plant expansion at La Guitarra, in Estado de México. Agnico Eagle and Alamos Gold informed on Q3 Results. ON FINANCING. Platauro Metals announced a new OTCQB symbol. Pinnacle Gold and Silver closed a financing round for C$1.65 M. ON RESOURCES AND DEVELOPMENT, Tocvan Ventures reported on metallurgical results at Gran Pilar, in Sonora. Sonoro Gold presented results from drilling at Cerro Caliche, in Sonora. ON DEALS AND CORPORATE ISSUES, Goldgroup Mining announced a US$75 M strategic investment in Luca Mining, to support the acquisition of Cozamin, in Zacatecas. Silver Hammer and Stroud Resources shareholders approved of its merge. Madoro Metals updated on the proposed takeover with Narrow River Resources. ON SOCIAL RESPONSIBILITY, no relevant news.

 ON MEXICO ISSUES

•  No Relevant News.

 ON EXPLORATION

• Tocvan Expands El Mezquite; Drilling Returns 106.8 m of 0.5 g/t Au: Tocvan Ventures (Gran Pilar, Sonora)
• Algo Grande Copper Secures Five-Year Surface Access Agreement with Ejido Palos Chinos at the Adelita Project: Algo Grande Copper (Adelita, Sonora)
• Masivo Silver Reports Broad Polymetallic Mineralization from Initial 2026 Drilling Program at Cerro Colorado Project, Sonora, Mexico: Masivo Silver (Cerro Colorado, Sonora)
• Centenario Gold Announces the Start up of it's Maiden Drill Program at the Los Reyes Copper, Moly, Gold Skarn System: Centenario Gold (Los Reyes, Chihuahua)

  ON MINING

•  Sierra Madre Announces Guitarra Processing Plant Achieves Throughputs of up to 720 Tonnes per Day as Development at Nazareno and Guitarra Mines Accelerates: Sierra Madre Gold and Silver (La Guitarra, Estado de México
• Agnico Eagle Provides Notice of Release of Third Quarter 2026 Results and Conference Call: Agnico Eagle (San Nicolás, Zacatecas)
• Alamos Gold Provides Notice of Third Quarter 2026 Results and Conference Call: Alamos Gold (Mulatos, Sonora)

 ON FINANCING AND SHARES

•  Elemental Royalty to Participate in Renmark’s Virtual Non-Deal Roadshow Series on Wednesday, October 7, 2026: Elemental Royalty (Mercedes, Sonora)
• Platauro Metals Announces New OTCQB Trading Symbol: Platauro Metals (Las Minas, Veracruz)
• Pinnacle Closes Second and Final Tranche of Private Placement: Pinnacle Silver and Gold (Potrero, Durango)

 ON RESOURCES AND DEVELOPMENT

•  Tocvan Reports Positive Closed-Circuit Column Leach Test Results at Gran Pilar: Tocvan Ventures (Gran Pilar, Sonora)
• Sonoro Gold Announces Continued Expansion of Higher-Grade Mineralization at Cerro Caliche: Sonoro Gold (Cerro Caliche, Sonora)

 ON DEALS AND CORPORATE ISSUES

•  Goldgroup Announces Commitment for Strategic Investment in Luca Mining: Goldgroup Mining (San Francisco, Sonora)
• Luca Mining Announces Binding Equity Commitment from Goldgroup Mining Inc.: Luca Mining (Campo Morado, Guerrero)
• Silver Hammer and Stroud Shareholders Overwhelmingly Approve the Amalgamation of Silver Hammer, Stroud and SilverMark, and Announce Results of Annual and Special Meetings: Silver Hammer Mining (Santo Domingo, Jalisco)
• Madoro Metals Corp. Provides Update on Proposed Reverse Takeover with Narrow River Resources: Madoro Metals (Cerro Minas, Oaxaca)

 ON SOCIAL RESPONSIBILITY

• No Relevant News

 On the image below: Monzonite porphyry in northern Sonora. Picture by Jorge Cirett