Investment
The Mining and Exploration News in Mexico: Highlights on the Third Week of September 2025

By Jorge Cirett
During the 38th week of the year (September 15th to September 21st, 2025), companies working in Mexico presented 29 press releases. Two companies presented exploration advances on early-stage properties. One company presented financial results. Fifteen companies presented news on financing rounds and share-related issues. One company is to commence drilling at its advanced property. twelve companies informed on deals and corporate issues. ON MEXICO ISSUES, no relevant news. ON EXPLORATION, in Sonora, Tocvan Ventures is to commence field work at Gran Pilar; Colibri Resource updated on project work at the EP project. ON MINING, Starcore International Mines filed quarterly results. ON FINANCING, five companies informed on financing rounds: Silver Tiger (C$25 M), Impact Silver (C$16 M), Minera Alamos (C$135 M), Zacatecas Silver (C$3.75 M), Silver Dollar Resources (C$5.9 M). Masivo Silver is working on its MCTO. Discovery Silver can borrow up to US$250-350 M. Sandstorm Gold declared a dividend for the quarter. Elemental Altus Royalties received approbation for consolidation. Pacifica Silver and Luca Mining issued shares to management, employees and consultants. Avino Silver & Gold Mines has been added to the Market Vectors Junior Gold Miners Index (MVGDXJTR). Xali Gold resumed trading and explained how it is addressing its current capital deficiency. ASA Gold and Precious Metals acquired 17.5% of Minera Alamos. ON RESOURCES AND DEVELOPMENT, Regency Silver is to commence drilling at its Dios Padre project in Sonora. ON DEALS AND CORPORATE ISSUES, Masivo Silver updated on the Cerro Colorado project in Sonora. Sandstorm Gold filed its notice of meeting on its Merger with Royal Gold. Almaden Minerals provided an update on its litigation against Mexico. Capitan Silver announced appointments to its management’s team and board of directors. Plata Latina announced AGM results. Xali Gold terminated its option on the Sarape project, in Sonora. Xali Gold clarified the agreement with Remoedioambiente S.A. de C.V. on El Oro claims. Vizsla Silver announced the appointment of Eduardo Luna as lead director of the board. Southern Silver Exploration is acquiring a key inner claim at its Cerro Las Minitas project in Durango. Prime Mining announced an advisory firm is recommending shareholder vote for the Torex’s takeover. Goldgroup Mining acquired a majority on Molimentales del Noroeste, S.A. de C.V., the company holding the San Francisco mine in Sonora. Newmont divested its holdings on Orla Mining. ON SOCIAL RESPONSIBILITY, Orla Mining released its 2024 sustainability report.
ON MEXICO ISSUES
- No Relevant News.
ON EXPLORATION
- Tocvan Ventures Corp. announced the commencement of field work and an airborne magnetics survey at its Gran Pilar project in Sonora. “the field work encompasses advanced geological mapping, targeted sampling, and sophisticated geophysical surveys…”. Tocvan is also preparing a drilling and trenching campaign to commence before the end of the month. The company has secured full permit approval for a 10-year pilot mine facility at the site.
- Colibri Resource Corp. provided a corporate update. At the EP project in Sonora the company holds 4,766 ha within 25 km from Fresnillo plc´s La Herradura mine, with more than 2,500 surface samples and 12,000 m of drilling. At Pilar, also in Sonora, Colibri holds 49% interest in the project that has over 24,000 m of drilling, trenching and surface work, as well as a 1,400-tonne bulk sample completed in 2023 with 63% recoveries for gold. The projects is permitted for a 50 K tonnes pilot mine facility. The company is also advancing debt conversion-New debenture, equity financing and market initiatives.
ON MINING
- Starcore International Mines Ltd. filed the results for its first quarter ended July 31, 2025. During the period the company had revenues of C$8.64 M, earnings of C$1.9 M, net income of C$0.93 M and EBITDA of C$1.35 M. At its San Martin mine in Queretaro, Starcore milled 54.2 K tonnes averaging 1.47 gpt Au, 12.9 gpt Ag, recovering 77.4% Au, 54.8% Ag, to produce 2,000 Oz Au, 12.3 K Oz Ag, or 2.1 K Oz AuEq, at 2,499 per Oz AuEq.
ON FINANCING
- Masivo Silver Corp. has prepared the financial statements and is undergoing the associated audit to reverse its management cease trade order (MCTO). “Masivo expects the audit to be completed, and the required filings submitted by September 29, 2025” Cerro Colorado, Sonora).
- Silver Tiger Metals Inc. entered into an agreement with Stifel Canada, to act as sole book underwriter, together with a syndicate of underwriters, to purchase on a bought deal basis 34.75 M common shares for gross proceeds of C$25 M. The company will grant an option to purchase an additional 15% of the offering that will, if exercised in full, raise additional C$3.75 M in gross proceeds (El Tigre, Sonora).
- Discovery Silver Corp. entered into an agreement with a syndicate of financial institutions for a revolving credit facility that allows the company to borrow up to US$250 M, with an accordion feature for an additional US$100 M. The syndicate includes Bank of Montreal (BMO), BMO Capital Markets and Canadian Imperial Bank of Commerce (CIBC) and National Bank of Canada (NBC) (Cordero, Chihuahua).
- Sandstorm Gold Ltd. declared the third quarterly cash dividend for 2025, in the amount of C$0.02 per common share (Royalty on Cosalá, Sinaloa).
- Pacifica Silver Corp. issued 2.6 M stock options to directors, officers and consultants (Claudia, Durango).
- Elemental Altus Royalties Corp. received approval of the TSX Venture Exchange for the share consolidation of the issued and outstanding shares of the company on a one to ten basis (royalty on Mercedes, Sonora).
- Avino Silver & Gold Mines Ltd. announced that it has been added to the Market Vectors Junior Gold Miners Index (MVGDXJTR) and the VanEck Junior Gold Miners ETF (DXJ) (Avino, Durango).
- Xali Gold Corp. addressed the current capital working deficiency, US$3.15 M as of June 30, 2025, with the following plans. Mining Fees of US$1.25 M owed in Mexico are to be reduced to nil by payments by Remedioambiente S.A. de C.V. (See note under Deals and Corporate Issues) and/or other third parties. A third party owed US$646.5 K is to be issued shares for debt for up to 50% of the amount owed and the reminder in 2026. Directors and officers who are owed US$594 K have agreed to wait and take shares for debt for up to 50% of the amount owed and the rest when possible. “Trade payables and liabilities totalling $542,393, of which up to 40% are to be paid from proceeds of a financing planned for Fall 2025, up to 25% by shares for debt and the remaining with proceeds from a second financing planned for 2026”, Ridley Rocks Inc., a company controlled by Joanne Freeze, president and CEO, had loaned the Company C$124.3 K which is payable by March 31, 2026, is not interest bearing nor does it have any securities pledged against it. During July-September 2025 Ridley Rocks is to loan additional C$150 K, bearing 3% interest, to be repaid on September 2026 (El Oro, Estado de México).
- Impact Silver Corp. announced the closing of its previously announced “bought deal” private placement for gross proceeds of C$16 M. The company intends to advance underground development and infrastructure at the Guadalupe mine and increase processing plant throughput at the Guadalupe Production Centre (Royal Mines of Zacualpan) in the states of Mexico and Guerrero and expand mining operations and processing capacity and resource definition drilling at the Plomosas zinc-silver-lead mine in Chihuahua.
- Minera Alamos Inc. reported the closing of the “bought deal” private placement previously announced, for gross proceeds of C$135 M (Santana, Sonora).
- Luca Mining Corp. granted an aggregate of 3.2 M incentive stock options and 0.88 M restricted share units to certain officers and directors of the company (Campo Morado, Guerrero).
- Zacatecas Silver Corp. increased its previously announced private placement for gross proceeds of up to C$3.75 M (Zacatecas Silver, Zacatecas).
- Xali Gold Corp. resumed trading on September 18, 2025 (El Oro, Estado de Mexico).
- Silver Dollar Resources Inc. upsized its previously announced brokered private placement from C$4 M to C$5.9 M. The Offering is being led by Research Capital Corp. and Mr. Eric Sprott has indicated his intention to participate in the transaction through 2176423 Ontario Ltd. (La Joya, Durango).
- ASA Gold and Precious Metals Ltd. acquired from Minera Alamos Inc. through a private placement 55.6 M common shares and 55.6 M common shares purchase warrants for a C$19.72 M consideration in cash for the common shares. Asa Gold holds 9.6% of the issued and outstanding shares of the Issuer, or 17.5% of the issued and outstanding shares on a partially diluted basis (Santana, Sonora).
ON RESOURCES AND DEVELOPMENT
- Regency Silver Corp. is to commence drilling on the fourth week of September at its Dios Padre project in Sonora. The program is for 4,500 m of drilling in six to eight holes.
ON DEALS AND CORPORATE ISSUES
- Masivo Silver Corp. is advancing toward the anticipated closing of the Cerro Colorado property acquisition in Sonora, “where the project is already drill-permitted and ready for immediate mobilization of a drill program following financing and close”. The company continues to review properties in Sinaloa.
- Sandstorm Gold Ltd. filed its notice of meeting, management information circular in connection with the special meeting of shareholders to approve the merger with Royal Gold Inc (Royalty on Cosalá, Sinaloa).
- Almaden Minerals Ltd. provided an update to the international proceedings under the Comprehensive and Progressive Agreement for Trans-Pacific Partnership (CPTPP) with the United Mexican States (Mexico’s formal name). Almaden is pursuing the claim together with Almadex Minerals Ltd., which holds a 2% NSR, on illegal acts by Mexico resulting in the complete loss of the Ixtaca project (Puebla) investment. The three-person arbitration panel established the procedural calendar through to the hearing dates as follows: “Mexico is due to file its counter memorial (which responds to the Claimants’ March 20, 2025, memorial), by November 24, 2025. The Claimants will file their reply to Mexico’s counter memorial by April 27, 2026, and Mexico will file its rejoinder to this reply by August 5, 2026. The hearings are scheduled for December 14 – 18, 2026 (with December 19 held in reserve), and will be held in Washington, D.C.”. The claimants are seeking damages of US$1.06 billion.
- Capitan Silver Corp. announced the addition to the management’s team and board of directors of Graham Scott, director; Marc Idziszek, vice president of exploration; Israel Tolano Chacón, technical services, Xochitl L- Valenzuela Verdugo, project evaluation and Greg DiTomaso, investor relations (Cruz de Plata, Durango).
- Plata Latina Minerals Corp. announced results of its annual general meeting (AGM) held on September 16, 2025. All matters presented to the meeting were approved (La Joya, Hidalgo).
- Xali Gold Corp. has chosen not to continue with the option onthe Sarape project, in Sonora, from Advanced Lithium Corp.
- Xali Gold Corp. under advice by the TSX clarifies its agreement with Remedioambiente S.A. de C.V. on El Oro project, Estado de Mexico. Remedioambiente has the right to recover mineral from veins and backfill left behind in the historic El Oro mine workings on five of the El Oro concessions, paying Xali Gold 3% NSR on the extracted material above the 2,400 m level. Remedioambiente has an obligation to pay the mineral rights past due and payable in the future. Once these fees reach US$50 K, the fees may be converted in Xali shares. Remedioambiente has the right to appoint a Mining Engineer to Xali’s board, and if Remedioambiente acquires greater than 20% of Xali shares within five years, also an additional person to the position of chair of the board. A total of nine mining concessions in El Oro had been declared as cancelled by the Mexican Mines Bureau (AGM.- Agencia de Minería), in a manner that are understood to be unlawful due to the failure to provide a legally required 60-day notice directly to the company.
- Vizsla Silver Corp. announced that Mr. Eduardo Luna, an independent director of the Company since November 2023, has been appointed as Lead Director of the Board (Panuco, Sinaloa).
- Southern Silver Exploration Corp. reached an agreement to acquire the Puro Corazon mining claim located contiguous to its 100%-owned Cerro Las Minitas project in Durango, from an arms-length third party. The Puro Corazon mine is currently extracting ore at a 60 tpd rate, producing silver-lead and zinc concentrates. Puro Corazon is to be incorporated into the surrounding Cerro Las Minitas project to immediately commence a 12,000 m infill drilling program. On the first quarter of 2026 the company will commence the preparation of a preliminary economic assessment (PEA). The right to acquire the mining concession “m from an arms-length vendor in consideration for a series of cash payments to be made over a forty-month period following entering into of a definitive assignment agreement with the vendor”.
- Prime Mining Corp. announced that Glass Lewis, an independent proxy advisory firm has recommended that Prime securityholders vote “FOR” the plan of arrangement with Torex Gold Resources Inc. The proxy voting deadline is September 25, 2025. “The Board of Directors of Prime unanimously recommends that the Securityholders vote FOR the Arrangement” (Los Reyes, Sinaloa).
- Goldgroup Mining Inc. has acquired 52.7% of the creditors’ rights in Molimentales del Noroeste, S.A. de C.V. Concurso Mercantil (Chapter 11 equivalent in USA). Molimentales main asset is the San Francisco mine concession in Sonora. “Goldgroup paid approximately US$3.74 million for this acquisition, which includes payments made directly to creditors as well as expenses related to the transaction. The Company anticipates incurring additional costs as it continues acquiring further creditors’ rights”.
- Newmont Corp. completed the sale of 43.24 M common shares of Orla Mining Ltd. at a price of US$10.14 per common share, for aggregate gross proceeds of US$439 M. Prior to the sale Newmont held 13.3% of the issued and outstanding common shares on a non-diluted basis (Peñasquito, Zacatecas).
ON SOCIAL RESPONSIBILITY
- Orla Mining Ltd. released its 2024 sustainability report describing its responsible mining and transparent disclosure of environmental, social, and governance (“ESG”) performance. At Camino Rojo, in Zacatecas, the company stressed its low GHG emission intensity, low water usage per tonne of ore processed, purchasing from local suppliers, high training of workforce and partnership with local schools.
On the image below: Specularite veinlets in volcanosedimentary rocks, secondary hematite halo, HQ core. Picture by Jorge Cirett.

Sierra Madre Announces Upsize of Private Placement to $19.5 Million with Investment from Eric Sprott
First Majestic Produces 7.9 Million AgEq Ounces in Q2 2025 Consisting of 3.7 Million Silver Ounces and 33,865 Gold Ounces; Announces Improved 2025 Production and Cost Guidance and Conference Call Details
Almaden Provides Update on Arbitration Procedure with Mexico
The Mining and Exploration News in Mexico: Highlights on the First Week of July, 2025

Quartz stockwork veining hosted in sediments
By Miguel A Heredia
During the 27th week of the year (June 30th to July 06th 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 below, 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.

Mexico Freezes New Mining Concessions
President Claudia Sheinbaum has confirmed that Mexico will issue no additional mining concessions and will instead subject existing permits to an environmental review—cementing the de-facto moratorium imposed by her predecessor, Andrés Manuel López Obrador.
“There is not going to be another new concession—no, there are no new mining concessions,” Sheinbaum told reporters, adding that Environment Secretary Alicia Bárcenas “is working to solve the existing problem of contamination that remains in the mines.”
Mexico ranks as the world’s leading silver producer and a heavyweight in gold, copper, lead and zinc output. Industry lobby CAMIMEX has previously estimated the concession freeze cost …….
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