Ignimbrite

By Miguel A Heredia

During the 23th week of the year (June 1 to June 7, 2026), at least 22 press releases were issued by companies operating in Mexico, Of these, twelve related to deals and corporate matters, five presented exploration results, four addressed Mexican-related issues, and one covered resource and development updates.  ON MEXICO ISSUES, Silver Bull announced dismissal of its NAFTA claim against Mexico, and the company has been ordered to pay a portion of Mexico´s legal costs totalling approximately USD $998K. Orla Mining reported the illegal work stoppage and blockade at its Camino Rojo mine in Zacatecas, and days after it informed the end of the blockade and resumption of operations.  Americas Gold and Silver, Tocvan, and Advance Metals reported the best drilling intercepts in Mexico on the first week of June, 2026. ON EXPLORATION, In Sonora, the JV Questcorp/Riverside provided an update on ongoing exploration activities at La Union project, and expanded an IP Geophysical survey designed to further refine drill targets ahead of the fully funded Phase 2 drill program, and Tocvan provided an update on its fully funded 20,000m drill program and ongoing exploration activities at its flagship Gran Pilar project. In Chihuahua, Centenario Gold completed the first phase exploration program at Los Reyes project, and informed it encountered high-grade copper in underground workings developed along the intrusive-limestone contact. In Durango, Pinnacle received more positive results from second round of scoping metallurgical test at El Potrero project. In Guerrero, J2 announced the mobilization of its field team to start detailed property mapping at Sierra Plata Silver-Gold-Antimony project. ON MINING, ON FINANCING, No relevant news. ON RESOURCES AND DEVELOPMENT, Advance Metals intersected broad high-grade in first hole drilled at Gavilanes project, Durango, consisting of 220 g/t Ag over 33.9m, including 718 g/t Ag over 6.2m.   ON DEALS AND CORPORATE ISSUES, Algo Grande appointed Monica Ospina as ESG Advisor to the company. GR Silver announced the resignation of Daniel Schieber from the position of Vice President of Corporate Development and Corporate Relations for personal reasons.  Canadian Silver Hunter entered into binding stockpile access agreement on the EC1 and ES1 properties in Michoacan, and reported grab sample results from EC2, a separate ground stockpile location. Colibri announced the resignation of Mark Smethurst as a   Director of the company, effective immediately. Discovery Silver announced the appointments of Dawid Myburgh as Senior Vice President, Timmins Operations, Harold Bird as Vice President, Mineral Processing; and Gertjan Bekkers as Vice President, Technical Services. Silver Spruce provided an update on the acquisition of Jackie project in Sonora. Endeavour reported voting results from its annual general meeting of shareholders. Fuerte Metals informed that it has changed its name to Talamore Mining Corp. Gold Resource announced special shareholder meeting to vote on the strategic merger with Goldgroup Mining. Impact Silver announced the appointments of Victor Jaramillo and Hector Gonzalez as Technical Consultants to the company to work on the expanding exploration program at its flagship Royal Mines of Zacualpan Silver-Gold Mining Project in State of Mexico. Mercado Minerals signed two letters of intent to acquire two adjacent Ag-Au epithermal projects in the San Dimas mining district in Durango. Vizsla provided an update on a communications service agreement with SRC Swiss Resource Capital AG. ON SOCIAL RESPONSIBILITY, No relevant news.

ON MEXICO ISSUES

• Silver Bull Resources Announces Dismissal of its NAFTA Claim Against Mexico on Jurisdictional and Time Limitations: Silver Bull Resources Inc
• Orla Mining Provides Update on Illegal Work Stoppage and Blockade at Camino Rojo: Orla Mining Ltd
• Orla Mining Reports Resumption of Operations at Camino Rojo: Orla Mining Ltd1
• Americas Gold and Silver Corporation, Tocvan Ventures Corp., and Advance Metals Limited reported the best drilling intercepts in Mexico on the first week of June, 2026. Details are shown in the table below:

• Mexico´s Best Drilling Intercepts, First Week of June, 2026: Gambusino Prospector de Mexico

ON EXPLORATION  

• Questcorp Mining and Riverside Resources Advance Toward Drilling with Expanded IP Survey at La Union Project, Sonora, Mexico: Questcorp Mining Inc / Riverside Resources Inc
• Tocvan Intersects Three New Gold-Silver Zones at Gran Pilar Project Exploration Drilling; Provides Pilot Mine Development Update: Tocvan Ventures Corp
• Centenario Gold – High Grade Copper Mineralization Encountered in Underground Sampling at The Los Reyes Project, Chihuahua, Mexico: Centenario Gold Corp
• Pinnacle Receives More Positive Results from Second Round of Scoping Metallurgical Tests at El Potrero with Average Gold Recovery of 97.8% for the Main Dos de Mayo Vein: Pinnacle Silver and Gold Corp
• J2 Metals Inc.: Field Team Mobilized at Sierra Plata Silver-Gold-Antimony Project in Zacualpan to Map Historical Mines, Workings, Veins: J2 Metals Inc

ON MINING

• No relevant news.

ON FINANCING

• No relevant news.

ON RESOURCES AND DEVELOPMENT

• Advance Metals – First Gavilanes Drill Hole Intersects Broad  High Grade Silver Zone: Advance Metals Limited

ON DEALS AND CORPORATE ISSUES

• Algo Grande Appoints Monica Ospina as ESG Advisor and Advances Digbee ESG Disclosure Submission: Algo Grande Copper Corp
• GR Silver Announces Executive Departure: GR Silver Mining Ltd
• Canadian Silver Hunter Secures Property Access and Rights, Provides Sample Results: Canadian Silver Hunter Inc
• Colibri Resource Corporation Announces Director Resignation: Colibri Resources Corporation
• Discovery Announces Management Changes: Discovery Silver Corp
• Silver Spruce Resources Inc. Provides an Update on the Jackie Project Acquisition: Silver Spruce Resources Inc
• Endeavour Silver Announces 2026 Annual General Meeting Voting Results: Endeavour Silver Corp
• Fuerte Announces Name Change To Talamore Mining Corp. and Provides AGM Results: Fuerte Metals Corporation
• Gold Resource Corporation Announces Special Shareholder Meeting to Vote on Strategic Merger With Goldgroup Mining: Gold Resource Corporation
• IMPACT Silver Adds Technical Expertise: IMPACT Silver Corp
• Mercado Minerals Signs Multiple LOI’s to Acquire District Scale Land Holdings in the Prolific San Dimas Mining District of Durango, Mexico: Mercado Minerals Ltd
• Vizsla Royalties Provides an Update on Communications Agreement: Vizsla Royalties Corp

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, an outcrop of a rhyolite ignimbrite of the Upper Volcanic Supergroup of the Sierra Madre Occidental province in an epithermal Ag-Au-(Pb-Zn) project in Chihuahua, Mexico.  Photo taken by Miguel A Heredia.