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The Mining and Exploration News in Mexico: Highlights on the First Week of July, 2025

By Miguel A Heredia

During the 27^th week of the year (June 30^th to July 06^th 2025), at least 16 press releases were announced by companies working in Mexico, and 3 news published by the media, with ten disclosing deals and corporate issues, five announcing financing rounds, three commenting on Mexican issues, and one communicating production results. ON MEXICO ISSUES, Fresnillo Plc announced that it plans to invest USD $750M for the development of four mining projects. Peñoles gained 5.24% on the Mexican Stock Exchange (BMV) due to the Tizapa mine re-opening in the Estado de Mexico. 33 tonnes of gold and silver concentrate belonging to Grupo Minero Bacis were stolen by an armed group on the highway near Guadalajara city, Jalisco.  ON EXPLORATION, no relevant news. ON MINING, Aura Minerals reported preliminary Q2, 2025 production results from its Aranzazu mine in Zacatecas. ON FINANCING, Silver Viper upsized its previously announced non-brokered private placement for gross proceeds of up to CAD $3.6M (La Virginia project, Sonora).  Silver Storm closed a first tranche of a non-brokered private placement of 29,802, 692 units at a price of CAD $0.13 per unit for gross proceeds of CAD $3,874,349.96 (La Parrilla mine, Durango). Minaurum closed its previously announced best efforts private placement for gross proceeds of CAD $9.2m (Alamos Silver project, Sonora). Oroco announced that it cancelled the CAD $1.5M non-brokered private placement previously announced on June 17, 2025 (Santo Tomas project, Sinaloa). Inomin closed a brokered private placement for gross proceeds of CAD $229,775 (La Gitana project, Oaxaca).  ON RESOURCES AND DEVELOPMENT, no relevant news.  ON DEALS AND CORPORATE ISSUES, Roberto Resources signed a binding letter agreement to acquire 100% of the Claudia project in Durango. GR Silver announced appointments to strengthen its management structure and provided a corporate update (Plomosas project, Sinaloa). Roberto Resources appointed a new member to its Board of Directors (Claudia project, Durango). Questcorp entered into a marketing consulting services agreement with Spark Newswire (La Union project, Sonora). US Antimony announces its official listing on the NYSE Texas Exchange (Los Juarez project, Queretaro). Oroco retained Whittle Consulting to conduct a strategic option study for its Santo Tomas project in Sinaloa. GR Silver announced an incentive plan granting Deferred Share Units (DSUs) to non-executive directors as part of their long-term compensation (Plomosas project, Sinaloa). Sonoro Gold secured all of the surface rights necessary for its Cerro Caliche project in Sonora. Goldgroup Mining completed the acquisition of a 100% interest in the Pinos project in Zacatecas. Candelaria announced completion of disposition of Minera Apolo (Pinos project, Zacatecas).   ON SOCIAL RESPONSIBILITY, no relevant news.

ON MEXICO ISSUES

• Fresnillo Plc announced that it plans to invest USD $750M for the development of four mining projects, which are contemplated in Plan Mexico. These projects are in the exploration stage and are located in Durango, Chihuahua, Sonora, and Guanajuato. The investment could range from USD $300M to USD $750M, and the investment period will be between three and five years. The company added that the projects are primarily gold and silver, but also base metal such as copper. In 2025, Fresnillo Plc expects attributable silver production between 49.0 and 56.0M Oz, with attributable gold production expected between 525K and 580K Oz. This would be lower than the 2024 silver production of 56.3M Oz and gold production of 631.6K Oz.
• Industrias Peñoles S.A.B. de C.V., the world´s leading silver producer, announced the end of the work stoppage at its Tizapa mine in the Estado de Mexico. The company said that the Federal Labor Court for Collective Affairs ordered the resumption of work and the payment of wages for the days the strike lasted, after finding two violations of the collective bargaining agreement and rejecting seven others demanded by the National Union of Mining, Metallurgical, Steel and Similar Workers of the Mexican Republic (SNTMMSRM). After resuming operations, the Peñoles shares gained 5.24% on the Mexican Stock Exchange (BMV) to trade at MXP $521.75, reaching their highest level since June 13.
• 33 tonnes of gold and silver concentrate belonging to Grupo Minero Bacis S.A. de C.V. were stolen by an armed group on the highway near Guadalajara city, Jalisco, bound to the Manzanillo´s port. According to preliminary information, the tractor-trailer, with registration number 104, was intercepted by two white vehicles with tinted windows. Their crews neutralized the security guards and subdued the tractor-trailer driver, who was detained for at least an hour and a half. After their release, the affected personnel reported the incident to the National Guard at the Chapala toll booth, where it was confirmed that the personnel were not injured and the tractor-trailer had been recovered, although there is no information regarding the whereabouts of the cargo. The company is halting operations until the safety of its personnel is safeguarded. “Grupo Bacis regrets this incident, which harms our mining business and our revenues into the country”.

ON EXPLORATION

• No relevant news.

ON MINING

• Aura Minerals Inc., reported preliminary Q2, 2025 production results from its Aranzazu mine in Zacatecas. The company produced 22,281 Gold Equivalent Ounces (GEO), representing a 9% increase compared to previous quarter, resulting from higher grades and better recoveries.

ON FINANCING

• Silver Viper Minerals Corp., upsized its previously announced non-brokered private placement of up to 12M units at a price of CAD $0.30 per unit for gross proceeds of up to CAD $3.6M (La Virginia project, Sonora).
• Silver Storm Mining Ltd., closed a first tranche of a non-brokered private placement of 29,802, 692 units at a price of CAD $0.13 per unit for gross proceeds of CAD $3,874,349.96. “The company intends to use the net proceeds from the offering for: (i) the procurement of mine processing flotation cells; (ii) to commence rehabilitation work of the La Parrilla mine, Durango processing facility including equipment purchase and refurbishment, labour and supplies; (iii) to order long lead items including deposits on mining equipment and ventilation fans; (iv) to fund ongoing operations for the next twelve months; and (v) for general corporate and working capital purposes.
• Minaurum Gold Inc., closed its previously announced best efforts private placement of 36,800,000 units at a price of CAD $0.25 per unit for gross proceeds of CAD $9.2m. The company plans to use the gross proceeds for exploration expenditures of its Alamo Silver project in Sonora, property maintenance and permitting costs and for general working capital purposes.
• Oroco Resource Corp., announced that it cancelled the CAD $1.5M non-brokered private placement previously announced on June 17, 2025 (Santo Tomas project, Sinaloa).
• Inomin Mines Inc., closed a brokered private placement of 6,565,000 units at a price of CAD $0.05 per unit for gross proceeds of CAD $229,775. According to the company, net proceeds will be used as follow: 50% for general working capital, 25% to pay non-arm´s length management services, 10% for marketing services, and 5% for property evaluations. Inomin paid a total of CAD $15,349.25 in cash commission and issued a total of 438,550 broker warrants as finder´s fee. Each Broker Warrant is exercisable for one Share at a price of CAD $0.05 per share for a period of 24 months (La Gitana project, Oaxaca).

ON RESOURCES AND DEVELOPMENT

• No relevant news.

ON DEALS AND CORPORATE ISSUES

• Roberto Resources Inc., signed a binding letter agreement with Durango Gold Corp., a private company, to acquire 100% of the Claudia project in Durango. The company will acquire all the issued and outstanding shares of Cielo Azul Resources S.A. de C.V., a subsidiary of Durango Gold. Roberto Resources will pay Durango Gold USD $25K in cash at closing and issue 10M shares subject to a 12-month resale restriction. The company also will assume USD $651,453 in accounts payables and potential bonus payments to Silverstone based on gold and gold equivalent resources discovered. “If a Measured and Indicated Resource is disclosed ranging from 1 to 500K Oz Au or Oz AuEq (payment of USD $7M), 500,001 to 1M Oz Au or Oz AuEq (payment of an additional USD $10M), and 1,000,001 to 1.5M Oz Au or Oz AuEq (payment of an additional USD $2M). The agreement allows for the gold discovery payments to be paid 50% in company shares and 50% in cash. If the company is unable to publish a Technical Report disclosing Measured or Indicated Resources by December 31, 2029, the Project must be returned to Silverstone”. Roberto Resources must complete 50,000m of drilling by December 31, 2029, and Silverstone can explore and mine up to 130K tonnes at the Aguilarena shaft.
• GR Silver Mining ltd., announced appointments effective immediately to strengthen its management structure by recognizing the contribution of the company´s team in recent success, and provided a corporate update. The former COO will assume the role of President and CEO; the former CEO will assume the role of Executive Chair of the Board of Directors; the General Manager has been promoted to Vice President of Operations; the Exploration Manager has been promoted to Vice President Exploration; and other member has been promoted to Controller. With this management restructuration, GR Silver is advancing its Plomosas project in Sinaloa, based on the upside resource potential at the San Marcial Area, and the recognition of synergies and opportunities available at the permitted historical Plomosas mine site. The company is continuing a 3,000m drill program at San Marcial Area, and the management continues third-party discussions to advance the commencement of a Bulk sampling Test Mining program at the Plomosas mine. Finally, GR Silver granted incentive stock options to purchase up to 750,000 common shares to officers of the company on joining senior management. The options will vest on the date of grant. The options are exercisable at CAD $0.175 per share for a period of five years from the date of grant and are subject to the policies of the TSX Venture Exchange.
• Roberto Resources Inc., appointed a new member to its Board of Directors, effective immediately (Claudia project, Durango).
• Questcorp Mining Inc., entered into a marketing consulting services agreement with Spark Newswire Inc., to provide certain promotional services to the company (La Union project, Sonora).
• US Antimony Corporation announces its official listing on the NYSE Texas Exchange while keeping its NYSE American Spot, making it a dual-listed company. Their move to Dallas aligns with their push into regional visibility and tapping into a strategic investor base, while also benefiting from Texas’ business-friendly atmosphere (Los Juarez project, Queretaro).
• Oroco Resource Corp., retained Whittle Consulting to conduct a strategic option study for its Santo Tomas project in Sinaloa. The study aims to optimize the project's operations by exploring innovative strategies such as alternative power sources, electrification of mining fleets, and processing technologies. Utilizing advanced software and existing resource data, the collaboration seeks to enhance project economics and guide future development phases.
• GR Silver Mining Ltd., announced an incentive plan granting Deferred Share Units (DSUs) to non-executive directors as part of their long-term compensation. These DSUs vest after one year and can be settled in shares or cash, aligning directors’ interests with the company’s success. The plan aims to retain and motivate board members while supporting the company's ongoing silver-gold resource expansion in Mexico Plomosas project, Sinaloa).
• Sonoro Gold Corp., secured through its wholly owned Mexican subsidiary Minera Mar de Plata S.A. de C.V., all of the surface rights necessary for its Cerro Caliche project in Sonora through a lease agreement, granting the company exclusive access for the exploration, development, and extraction of mineral deposits, as well as the construction of related mining infrastructure. Sonoro signed a lease for 12.5 years, renewable for another 12.5 years for exclusive access to over 3,900 hectares, which will expand to 5,007 hectares on September 1, 2028 to covers their mining concessions and nearby areas. Initial lease payments include USD $3,125,000 plus a one-time issuance of 5,000,000 Sonoro common shares in the first year, with subsequent payments of USD $6,250,000 for the next two years. An initial payment of USD $1M has been already made. Renewal terms will involve similar payments at specified intervals.
• Goldgroup Mining Inc., completed the acquisition of a 100% interest in the Pinos project in Zacatecas, which is fully permitted for construction. The project includes 30 mining concessions covering 3,816 hectares, featuring low-sulphidation epithermal gold and silver vein systems, along with a larger mineralized stockwork target suitable for open-pit mining, with historical production records indicating high-grade ore. The company plans to update the 2018 Preliminary Economic Assessment to evaluate the project's potential in the current market to advance towards production and to conduct a near-mine drill campaign to explore resource expansion.
• Candelaria Mining Corp., announced completion of disposition of its subsidiary Minera Apolo S.A. de C.V., which holds interest in the Pinos project in Zacatecas, under an agreement dated March 6, 2025. This follows the resolution of enforcement proceedings with Goldgroup Mining Inc. related to a default under a loan facility. As part of the agreement, Candelaria transferred all outstanding shares of Apolo to Goldgroup, satisfying the loan and releasing all related claims against Candelaria. Goldgroup issued 716,667 shares and a cash payment of USD $8K, with an additional USD $89K due within six months post-approval from the TSX Venture Exchange.

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 above, quartz stockwork veining hosted in sediments in an intermediate sulphidation epithermal vein system in a project in Chihuahua, Mexico. Photo taken by Miguel A Heredia.