Massive Sulphides

By Miguel A Heredia

During the 49^thweek of the year (December 1^stto December 7^th2025), at least 29 press releases were announced by companies working in Mexico, and 2 news published by the media with eleven announcing financial rounds, six reporting resources and development of their properties, five disclosing deals and corporate issues, three communicating production results, three informing on exploration results, and three commenting on Mexican issues. ON MEXICO ISSUES, The Association of Mining, Metallurgical, and Geological Engineers of Mexico (AIMMGM) expressed its concern about the reform to the Water Law, which according to the miners “threatens the operational continuity of the sector”. Torex Gold, Southern Silver, Pan American Silver, and Kingsmen reported the best drilling intercepts in Mexico on the second week of November, 2025. ON EXPLORATION, In Sonora, Minaurum announced a plan to expand the phase II resource-expansion drill program at its Alamos Silver project from 25,000m to 50,000m, and Tocvan reported positive surface sampling results from the North Block area and provided an update on their ongoing drill program at Gran Pilar project. In Chihuahua, Kingsmen reported drill results from its Las Coloradas project. In Oaxaca, EV Resources provided an exploration and development update on its Los Lirios project. ON MINING, Empress Royalty reported financial and operational results for the nine months ended September 30, 2025 (royalties on Tahuehueto project, Durango). Guanajuato Silver provided an update on its mining operations in Guanajuato. Gold Resource reported initial production from the Three Sisters Area at Don David Gold mine in Oaxaca. ON FINANCING, Riverside closed a non-brokered private placement for gross proceeds of CAD $3,692,000 (La Union project, Sonora). Endeavour Silver announced the issuance of USD $300M in unsecured convertible senior notes due 2031, with an option to sell an additional USD $45M, which has been increased to USD $50M (Pitarrilla project, Durango). GR Silver upsized its bought deal LIFE offering for gross proceeds of CAD $17,500,200 (Plomosas project, Sinaloa). First Majestic announced a private placement of up to USD $300M unsecured convertible senior notes due 2031 an optional up‑front purchase right for an additional USD $45M. Minaurum announced a private placement for gross proceeds of up to CAD $10,000,080, and then, due to investor demand was increased to CAD $15, 7999,999.68 (Alamos Silver project, Sonora). Silver Spruce reported that it will undertake a non-brokered private placement for gross proceeds of up to CAD $1M (Pino de Plata project, Chihuahua). Southern Silver announced bought deal LIFE private placement for gross proceeds of CAD $5M (Cerro Las Minitas project, Durango). Orla declared inaugural quarterly cash dividend of USD $0.015 per common share (Camino Rojo mine, Zacatecas). ON RESOURCES AND DEVELOPMENT, Southern Silver released assays from a hole drilled at Puro Corazon claim at its Cerro Las Minitas project in Durango. Minera Alamos provided an update on its Cerro de Oro project in Zacatecas. Pan American provided a 2025 year end exploration update on its La Colorada mine in Zacatecas-Durango. Torex Gold released drill results from Media Luna West in Guerrero. EV Resources reported that it is advancing the refurbishment of its Tecomatlán plant in Puebla, to process antimony. Mithril provided an exploration update on its Copalquin project in Durango. ON DEALS AND CORPORATE ISSUES, Heliostar appointed James Perry as Chairman of the company (Ana Paula project, Guerrero). Vizsla posted a replay of its recent webinar summarizing the positive results of the independent Feasibility Study for its Panuco project in Sinaloa. Heliostar made a deal with GRA Enterprises for investor relations and communication services (Ana Paula project, Guerrero). Fortune Bay appointed Patrick McGrath as Chief Financial Officer (Poma Rosa project, Chiapas). Mithril announced a purchase option to acquire La Dura project in Durango. ON SOCIAL RESPONSIBILITY, No relevant news.

ON MEXICO ISSUES

The Association of Mining, Metallurgical, and Geological Engineers of Mexico (AIMMGM) expressed its concern about the reform to the Water Law, which according to the miners threatens the operational continuity of the sector, the production of strategic minerals, and the live hoods of approximately 3 million families who depend directly and indirectly on mining. This amendment would allow water concessions to be granted to the mining industry under new restrictions and usage priorities, which could significantly limit or modify their access to and operation of water in areas where the resource is currently used. The association, which represents professionals and technicians in the mining industry, highlighted that currently 76% of Mexico’s water is allocated for agricultural use, 14% for public supply, 5% for the energy sector, and 5% for the industrial sector, and mining uses an estimated 0.27% of the total national volume.

·         In agreement with the Mexican Mining Chamber (CAMIMEX), the Association of Mining, Metallurgical, and Geological Engineers of Mexico (AIMMGM) called for legislation on water resources that balances industrial, social, and environmental considerations, and warned that potential negative impacts could arise from proposed changes to article 118 of the National Water Law. It also stated that efficient and responsible water management is a fundamental pillar of sustainable development strategies for economic activity in Mexico and that human consumption should be prioritized. However, the proposed reform would negatively impact the mining industry and other economic sectors.  “Formal mining in Mexico adheres to strict standards and safely contains its waste. With guidance from federal agencies such as the National Water Commission (CONAGUA), mining units establish clear guidelines for the responsible management of water resources, guaranteeing their preservation and sustainable use during the operational phase and after the conclusion of mining activities. The AIMMGM reaffirmed its willingness to collaborate with the Government of Mexico in building an effective, sustainable regulatory framework that is fully aligned with national objectives for mining.

Torex Gold Resources Inc., Southern Silver Exploration Corp., Pan American Silver Corp., and Kingsmen Resources Ltd., reported the best drilling intercepts in Mexico on the second week of November, 2025. Details are shown in the table below:

ON EXPLORATION

Minaurum Gold Inc., announced a plan to expand the phase II resource-expansion drill program at its Alamos Silver project in Sonora from 25,000m to 50,000m. The drill program will be carried out with multiple rigs on site and 263 drill pads already permitted across the property, and will include step-out holes at the Europa and Travesia silver shoots, as well as additional drilling at the historic Quintera and Minas Nuevas mines, and the most recently discoveries at Promontorio Sur, Cotera, Pulpito, and San Jose vein zones.
Tocvan Venture Corp., reported positive surface sampling results from the North Block area and provided an update on their ongoing drill program at Gran Pilar project in Sonora. Surface sampling returned promising Au (up to 5.6 g/t) and Ag assays (up to 1,225 g/t), along with widespread elevated pathfinders and alteration signatures such as As, Sb, Pb, and Zn, which are commonly associated with epithermal Au-Ag systems. These results support further exploration efforts. On the other hand, Tocvan reported that the ongoing drill program at Gran Pilar is advancing well, with multiple holes completed and encouraging initial results that aim to expand the known mineralized area. To date, 1,300m have been drilled in five holes across the North Block. Assay results are pending.
Kingsmen Resources Ltd., reported drill results from its Las Coloradas project in Chihuahua. Hole LC-25-008 intersected a high-grade interval from 156.4m to 158m (1.60m) with 1.28 g/t Au, 521 g/t Ag, 9.4% Pb, and 1.1% Zn (931 g/t AgEq).
EV Resources provided an exploration and development update on its Los Lirios project in Oaxaca. It commenced preparation for its upcoming drill program and has already completed permits to drill up to 50 drill holes as well as for bulk sampling trenches to explore mineralization at Los Lirios project. The company expects to start the drill program in the second week of January, 2026.

ON MINING

Empress Royalty Corp., reported financial and operating results for the nine months ended September 30, 2025. Empress recorded royalty and streaming revenue of USD $10.8M, with gross profit of USD $7.4M (royalties on Tahuehueto project, Durango).
Guanajuato Silver Company Ltd., provided an update on its mining operations in Guanajuato, as it is closing the acquisition of Bolañitos S.A. de C.V. The company is optimizing its processing facilities by temporarily closing the Cata plant and rerouting mineralized material to existing mills like El Cubo. This restructuring aims to enhance mill utilization, reduce costs, and improve overall efficiency in the Guanajuato region. They are also exploring options to reactivate other mines and improve their operations ahead of completing the Bolañitos acquisition, expected in January 2026.
Gold Resource Corporation reported initial production from the Three Sisters Area at Don David Gold mine in Oaxaca. In the week November 8-14, the company mined 4,357 tonnes and processed 6,769 tonnes at an average NSR of USD $1,512 per tonne. The NSR is 129% higher than NSR modelled. In the week November 15-21, it mined 6,580 tonnes and processed 6,095 tonnes at an average NSR of USD $723 per tonne. The tonnes mined are 40% higher and the NSR is 91% higher than planned and modelled.

ON FINANCING

Riverside Resources Inc., closed a non-brokered private placement for gross proceeds of CAD $3,692,000 by selling 18,460,000 hard-dollar units at a price of CAD $0.20 per unit. The company plans to use the net proceeds for strategic initiatives, working capital and general corporate purposes, and the advancement of its projects (La Union project, Sonora).
Endeavour Silver Corp., announced the issuance of USD $300M in unsecured convertible senior notes due 2031, with an option to sell an additional USD $45M, which has been increased to USD $50M, and now Endeavour Silver has set the terms for its convertible senior notes offering, aiming to raise up to USD $350M. The notes will bear a 0.25% annual interest rate, with an initial conversion price of approximately USD $12.4550 per share, representing a 32.5% premium over the current stock price. Later on, it closed its previously announced offering for gross proceeds of USD $350M. The company intends to use the proceeds primarily to repay existing debt, fund the development of its Pitarrilla project in Mexico, and for general corporate purposes. The notes will accrue interest semi-annually and be convertible into Endeavour Shares.
GR Silver Mining ltd., upsized its bought deal LIFE offering for gross proceeds of CAD $17,500,200 consisting of 33,334,000 units at a price of CAD $0.30 per unit for gross proceeds of CAD $10,000,200 to be issued on a prospectus-exempt basis pursuant to the LIFE Exemption, and 25,000,000 units at a price of CAD $0.30 per unit for gross proceeds of CAD $7,500,000 to be issued under a private placement pursuant to applicable prospectus exemptions in accordance with NI 45-106. Net proceeds will be used to advance its Plomosas project in Sinaloa, working capital and general corporate purposes.
First Majestic Silver Corp., announced a private placement of up to USD $300M unsecured convertible senior notes due 2031 an optional up‑front purchase right for an additional USD $45M. Net proceeds will fund a negotiated repurchase of a portion of its 0.375 % convertible senior notes due 2027. The notes will bear cash interest semi-annually and can be converted into common shares of First Majestic.
Minaurum Gold Inc., announced a private placement of 27,778,000 units at a price of CAD $0.36 per unit for gross proceeds of up to CAD $10,000,080, and then, due to investor demand was increased to 43,888,888 units for gross proceeds of CAD $15, 7999,999.68. The company plans to use the net proceeds to fund a 50,000m drill program at its Alamos Silver project in Sonora, a resource modelling, a metallurgical study, and update a NI43-101 mineral resource estimate, as well as for surface rights purchases, community relations expenses. General and administrative expenses and working capital.
Silver Spruce Resources Inc., reported that it will undertake a non-brokered private placement of 10,000,000 units at a price of CAD $0.1 per unit for gross proceeds of up to CAD $1M. Net proceeds will be used for exploration of the company´s mineral projects and general working capital (Pino de Plata project, Chihuahua).
Southern Silver Exploration Corp., announced bought deal LIFE private placement of 10,000,000 of common shares at a price of CAD $0.50 per common share for gross proceeds of CAD $5M. Net proceeds will be used for the advancement of its Cerro Las Minitas project in Durango, as well as for working capital and general corporate purposes.
Orla Mining Ltd., declared inaugural quarterly cash dividend of USD $0.015 per common share, which is payable on February 10, 2026 to shareholders of record as at the close of business on the record date of January 12, 2026 (Camino Rojo mine, Zacatecas).

ON RESOURCES AND DEVELOPMENT

Southern Silver Exploration Corp., released assays from a hole drilled at Puro Corazon claim in its Cerro Las Minitas project in Durango. The most interesting interceptions were encountered at hole 25CLM-203 (true widths reported) with 560 g/t Ag, 0.1 g/t Au, 0.1% Cu, 11.2% Pb, and 12.3% Zn (1,115 g/t AgEq or 41.6% ZnEq) over 10.5m, including 1,067 g/t Ag, 0.2 g/t Au, 0.2% Cu, 20% Pb, and 19.1% Zn (1,982 g/t AgEq or 74% ZnEq) over 3.4m, plus 143 g/t Ag, 0 g/t Au, 0.1% Cu, 4.8% Pb, and 1.5% Zn (280 g/t AgEq or 10.4% ZnEq) over 2.6m, including 396 g/t Ag, 0 g/t Au, 0% Cu, 7.2% Pb, and 5.8% Zn (691 g/t AgEq or 25.8% ZnEq) over 0.3m, plus 443 g/t Ag, 0.1 g/t Au, 0.3% Cu, 17.6% Pb, and 3.6% Zn (903 g/t AgEq or 33.7% ZnEq) over 0.6m. “The company is planning to incorporate the results of the Puro Corazon drilling program into the much larger Cerro Las Minitas project to significantly enhance the project economics. Final assays are expected to be received by the end of the first quarter of 2026, after which the company intends to update the Mineral Resource Estimate of the Cerro Las Minitas project; followed by an update of the Preliminary economic Assessment (“PEA”) of the project in accordance with the provisions of National Instrument 43-101”.
Minera Alamos Inc., provided an update on its Cerro de Oro project in Zacatecas. The Cerro de Oro is in the permitting phase and the company is actively engaging in constructive dialogue with the federal environmental permitting agency (SEMARNAT) to facilitate the approval process for mining activities. It also is focused on Engineering efforts to advance pre-development activities, including metallurgical optimization studies and detailed engineering designs, which are crucial for the project´s progression. On the other hand, Minera Alamos plans to initiate additional exploration drilling aimed at expanding the known areas of gold mineralization, as outlined in the Preliminary Economic Assessment (PEA) report dated October 3, 2022.
Pan American Silver Corp., provided a 2025 year end exploration update on its La Colorada mine in Zacatecas-Durango. In 2025, the company drilled nearly 23,000m to expand its mineral resources. The company particularly focused on the eastern and deeper parts of the mine, where recent drilling confirmed high grades of silver, gold, lead, and zinc, and extended mineralization beyond current resource estimates. A key highlight was the success in exploring the eastern extensions of high-grade veins, especially along the NC2 and Mariana vein systems. These efforts have helped increase the estimated inferred silver mineral resources to about 52.7M Oz in all mineralization styles, thanks to new discoveries and resource expansion campaigns. Overall, the focus is on enhancing the existing resource base and exploring new zones to sustain long-term production.
Torex Gold Resources Inc., released drill results from Media Luna West in its Morelos Complex in Guerrero. “A mineralized footprint of 400 x 300 m has now been defined. The system remains open to the north along the north-south mineralized corridor and to the south as surface mapping shows continuity of the breccia bodies towards the San Miguel fault”. Highlights from the 2025 drilling program at Media Luna West are shown in the table below:

EV Resources reported that it is progressing towards becoming a near-term producer of antimony and is advancing the refurbishment of its Tecomatlán plant in Puebla. The preliminary engineering studies for Phase 1 of the plant refurbishment are expected to be completed before year-end. This refurbishment aims to enable initial low-capex production, potentially starting the antimony production as early as mid-2026, with plans to expand to full processing capabilities later. The company just secured more funding to keep everything moving.
Mithril Silver and Gold Limited provided an exploration update on its Copalquin project in Durango. Channel sampling in different target areas has returned encouraging results. At Target 1 West-El Gallo, sampling returned 16.8 g/t Au and 625 g/t Ag over 0.50m and the resource update drilling continue, successfully expanding the mineralization and providing valuable information for the geology model that is now robust and predictive. At Target 3-El Jabali, a sample returned 16 g/t Au and 284 g/t Ag over 0.65m, and now is ready for the first phase of drilling, commencing early January, 2026. At Target 5-Candelaria, the sampling returned 38.3 g/t Au and 4,520 g/t Ag. Drilling, mapping and sampling continue to expand this highly prospective area in the southwest of the district. 8 drill holes have been completed to date with assay results pending.

ON DEALS AND CORPORATE ISSUES

Heliostar Metals Ltd., appointed James Perry as Chairman at the company annual general meeting of shareholders. It also granted 250,000 stock options at an exercise price of CAD $2.63 and 200,000 restricted share units (each, an RSU) to directors, oﬃcers and consultants of the company. The options are exercisable for a period of ﬁve years and will vest over the next three years. The RSUs will vest in three equal annual instalments commencing on the ﬁrst anniversary of the grant date (Ana Paula project, Guerrero).
Vizsla Silver Corp., posted a replay of its recent webinar summarizing the positive results of the independent Feasibility Study for its Panuco project in Sinaloa.
Heliostar Metals Ltd., made a deal with GRA Enterprises LLC starting December 1, 2025 for a fee of USD $30K for investor relations and communication services (Ana Paula project, Guerrero).
Fortune Bay Corp., appointed Patrick McGrath as Chief Financial Officer (Poma Rosa project, Chiapas).
Mithril Silver and Gold Limited announced a purchase option to acquire La Dura project in Durango. It consists of five contiguous mining claims totalling 2,052 hectares located less than 20km from its Copalquin project. Mithril has an option to acquire 100% interest at any time over four years by paying USD $4M to the vendor. It also is committed to maintain in good standing the mining concessions and carry out a LiDAR and aerial magnetic survey over the property in the first year and a minimum spend of USD $200K on exploration work in the second year.

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, massive sulphides in an IOCG project in Sonora, Mexico. Photo taken by Miguel A Heredia.

The Mining and Exploration News in Mexico: Highlights on the Second Week of October, 2025

October 11, 2025October 11, 2025 / gambusinoprospectormexico / Leave a comment

Rhyolite Dome

By Miguel A Heredia

During the 41^stweek of the year (October 6^thto October 12^th2025), at least 37 press releases were announced by companies working in Mexico, and one news published by the media, with fourteen announcing financial rounds, nine communicating mining and production issues, six disclosing deals and corporate issues, four reporting resources and developments of their properties, three informing on exploration results, and two commenting on Mexican issues. ON MEXICO ISSUES, Mining companies listed on the Mexican Stock Exchange (BMV) and Wall Street are expected to gain more than USD $250 billion in market value so far in 2025. Heliostar Metals and Torex Gold GR Silver and Kingsmen reported the best drilling intercepts in Mexico on the second week of October, 2025. ON EXPLORATION, In Sonora, Tocvan reported the early results from a drone magnetic survey at its Gran Pilar Gold-Silver project, and announced the discovery of a new target with historic underground workings in the North Alteration Zone. In Durango, Pacifica Silver identified new extensions to mineralized veins at its Claudia project, and provided details of a phase I drill program. ON MINING, Capstone announced that it will present its Q3, 2025 results on October 30, 2025 (Cozamin mine, Zacatecas). Goldgroup notified that it has successfully installed a second crushing circuit at its Cerro Prieto mine in Sonora. First Majestic reported Q3, 2025 production results from their Mexican operations. Endeavour presented Q3, 2025 production results from their Mexican mining operations (Bolañitos and Guanacevi in Guanajuato and Durango respectively). Altius provided a Q3, 2025 project generation update. Teck announced that it will present its Q3, 2025 results on October 22, 2025 (San Nicolas project, Zacatecas). Aura Minerals reported Q3, 2025 production results from its Aranzazu mine in Zacatecas. Torex Gold released strong Q3, 2025 production results from its Morelos Mine Complex in Guerrero. ON FINANCING, Mexican Gold Mining announced a non-brokered private placement for gross proceeds of up to CAD $850K (Las Minas project, Veracruz). Starcore reported that the $5M private placement previously announced has been oversubscribed (San Martin mine, Queretaro). Colibri announced that it intends to conduct two non-brokered private placements: one for gross proceeds of up to CAD $1.3M and a second for up to CAD $250K (Pilar and EP projects, Sonora). Vortex Metals closed its previously announced upsized non-brokered private placement for gross proceeds of CAD $700K, and then, due to interest from an existing strategic investor, it intends to close a second tranche for gross proceeds of CAD $105,000. (Zaachila and Riqueza Marina projects, Oaxaca) Silver Tiger closed its previously announced bough deal offering for gross proceeds of CAD $28,773,000 (El Tigre project, Sonora). Questcorp revised the terms of its previously announced non-brokered private placement and now will offer up to 7,500,000 units for gross proceeds of up to CAD $1.5M (La Union project, Sonora). Fuerte Metals closed its previously announced offering of subscription receipts for aggregate gross proceeds of CAD $57.5M (Cristina project, Chihuahua). Guanajuato Silver closed its previously announced bough deal public offering for gross proceeds of CAD $43.5M (El Cubo mine, Guanajuato). Pantera Silver announced a non-brokered private placement for gross proceeds of up to CADS $3.5M (Nuevo Taxco Silver project, Guerrero). Bear Creek announced drawdown of funds under Sandstorm note (Mercedes mine, Sonora). Silver Storm entered into a definitive agreement with Samsung C&T Hongkong Ltd and QSSC S.A.DE C.V. for a US $7.0 million offtake prepayment financing to restart operations at its La Parrilla Silver Mine Complex in Durango. US Antimony announced that it entered into a securities purchase agreement with a leading long-only mutual fund for aggregate proceeds of approximately USD $25M (Los Juarez project, Queretaro). ON RESOURCES AND DEVELOPMENT, Southern Silver initiated a drilling program at the Puro Corazon mine, which is adjacent to its 100% owned Cerro Las Minitas project in Durango, Mexico. Heliostar released results from the current 15,000m drill program at its Ana Paula project in Guerrero. Mithril reported exploration results from its Copalquin project in Durango. Torex Gold released results from drilling program at ELG underground, primarily focused on drilling around the El Limón Sur and Sub-Sill trends within its Morelos Mine Complex in Guerrero. ON DEALS AND CORPORATE ISSUES, Mithril notified to shareholders that its annual general meeting will be held on November 5, 2025 (Copalquin project, Durango). Pedro Resources announces the appointment of its CEO (Mapimi project, Durango). Quetzal Mining received conditional acceptance from the TSX Venture Exchange for its reverse takeover transaction with Silverco Mining Corp (Cusi mine, Chihuahua). Agnico announced that it acquired 5,000,000 subscription receipts of Fuerte Metals pursuant to a brokered private placement, at a price of CAD $1.65 per subscription receipt for a total consideration of CAD $8,250,000. Zacatecas Silver granted 5,000,000 stock options to its directors, officers, and consultants (Zacatecas Silver project, Zacatecas). ON SOCIAL RESPONSIBILITY, No relevant news.

ON MEXICO ISSUES

Mining companies listed on the Mexican Stock Exchange (BMV) and Wall Street are expected to gain more than USD $250 billion in market value so far in 2025. On the BMV, Grupo México, the world’s fourth-largest copper producer, is the mining company that has gained the most (USD $22.928 billion) in market value, totaling USD $59.98 billion. Its shares are up 42.89 % to MXP $141.36 this year. The company owned by Grupo BAL, Industrias Peñoles, gained USD $12.182 billion in market capitalization, reaching USD $124.533 billion. Its shares rose 199.51 % to MXP $797.29. Meanwhile, Minera Frisco added USD $2.182 billion and is worth USD $3.176 billion. Its shares increased 181.87 % to MXP $9.64 for the year. Fresnillo, a Peñoles subsidiary listed on the London Stock Exchange, earned USD $17.74 billion and has a total market value of USD $23.59 billion. Its shares rose 281 % to 2.36 pounds sterling, according to companiesmarketcap. The firms’ gains are driven by the price of gold, which reached a new all-time high above USD $4,000 per ounce, “benefiting from the weakness of the dollar, central bank purchases, and expectations of additional rate cuts in the United States.

Heliostar Metals Ltd., and Torex Gold Resources Inc., reported the best drilling intercepts in Mexico on the second week of October, 2025. Details are shown in the table below:

ON EXPLORATION

Tocvan Ventures Corp., reported the early results from a drone magnetic survey at its Gran Pilar Gold-Silver project in Sonora, and announced the discovery of a new target with historic underground workings in the North Alteration Zone.. The survey uncovered a major structural complex in the South Block, spanning approximately 2 by 2.5km. This complex exhibits magnetic signatures suggestive of magmatic activity and correlates strongly with past sampling up to 21.2 g/t Au and over 2,000 g/t Ag. These findings highlight new and expanded exploration targets, especially near areas with historical placer mining, and support the potential for deeper mineralization. The survey results validate geological models and provide a clear pathway for upcoming drill programs to evaluate the project’s mineral resources further. Tocvan also reported that it uncovered a new mineralized zone with 80m exposed section of old underground workings within the North Alteration Zone, with waste piles of silicified vein breccia material, and intense phyllic and argillic alteration. This zone features historic underground workings and extensive alteration patterns of approximately 3.2km long, indicating significant mineralization potential. Initial sampling has returned promising high-grade results for gold and silver, and the company plans to conduct further trenching, detailed mapping, and drilling to explore this largely underexplored area.
Pacifica Silver Corp., identified new high-priority drill targets based on assay results from 325 surface rock chips samples collected at its Claudia project in Durango. These samples yielded results up to 23.6 g/t Au and 480 g/t Ag confirming that the high-grade Au-Ag mineralization at the property is more extensive than previously recognized and may extend further south for another 300m towards the Mina de Oro vein system. Rock chips sample highlights include 111.2 g/t Au and 17 g/t Ag; 7.15 g/t Au and 143 g/t Ag; 2.74 g/t Au and 404 g/t Ag; 3.33 g/t Au and 311 g/t Ag; 2.03 g/t Au and 312 g/t Ag; 0.39 g/t Au and 408 g/t Ag; 1.83 g/t Au and 230 g/t Ag; and 2.19 g/t Au and 190 g/t Ag. The areas around Veta Justina and Mina Vieja are now considered new high-priority targets for drilling. The company also commenced a Phase I drill program, which aims to delineate and expand known mineralization at the northern extension of the Aguilareña, Guadalupana, and Veta Central veins and to drill high-priority, previously undrilled targets at the Mark Twain, Veta West and Veta Justina areas. To date it has completed 647m of drilling across the first three holes. Pacifica Silver plans to apply for permits to drill new targets as part of the program.

ON MINING

Capstone Copper Corp., announced that it will present its Q3, 2025 results on October 30, 2025 (Cozamin mine, Zacatecas).
Goldgroup Mining Inc., notified that it has successfully installed a second crushing circuit at its Cerro Prieto mine in Sonora, doubling the crushing capacity to over 4,500 tonnes per day. This expansion is part of a broader optimization strategy aimed at increasing gold production to over 24K Oz annually. Additionally, the company plans to implement a re-leaching project on existing heap leach pads, which could yield an extra 8K Oz Au per year, with initial production expected in the first quarter of 2026. The mine has been in production since 2013 accumulating over 10M tonnes of mineralized material on the leach pads. Ongoing exploration efforts are also underway to extend the mine’s life and enhance resource availability.
Luca Mining Corp., confirmed that its Tahuehueto mine in Durango is operating normally following an environmental inspection by Mexico’s PROFEPA (Federal Attorney for Environmental Protection). The inspection assessed compliance with the Environmental Impact Authorization issued by SEMARNAT (Secretariat of Environment and Natural Resources). PROFEPA requested clarification on a 0.3-hectare inactive area previously used for tailings storage, leading to a temporary closure notice for that section pending updated technical documentation. Luca Mining plans to create a remediation plan that will not disrupt ongoing operations. The company emphasizes its commitment to environmental compliance and transparency, stating that the temporary notice does not affect current production. Luca Mining continues to operate normally at both the Tahuehueto and Campo Morado mines, focusing on production and sustainability initiatives.
First Majestic Silver Corp., reported Q3, 2025 production results from their Mexican operations. The table below shows mine by mine production details:

Endeavour Silver Corp., presented Q3, 2025 production results from Bolañitos and Guanacevi mines in Guanajuato and Durango respectively, and provided an update on its Terronera project in Jalisco. At Terronera, the company processed between September 1 and September 23, 39,190 tonnes of material peaking at 2,162 tonnes in a single day and averaging 1,866 tonnes per day, with average metal recoveries of 82.8% for silver and 72.3% for gold. Since July 1, Terronera has produced approximately 212,043 Oz Ag and 6,256 Oz Au, processing 145,680 tonnes of material with average grades of 64 g/t Ag and 2.08 g/t Au. During the quarter, the mill achieved average metal recoveries of 70.7% for silver and 64.2% for gold. Mining operations at Terronera were temporarily impacted by an electrical problem in the SAG mill, but resumed successfully on September 30. In regards to Guanacevi and Bolañitos mines, the next table shows the Q3, 2025 production results by mine:

Altius Minerals Corporation provided a Q3, 2025 project generation update. Gross cash proceeds for the quarter totaled CAD $67.6M received from the Orogen Royalties Inc. Altius also received 9,889,490 new Orogen shares which were valued at approximately CAD $25M as of September 30, 2025, implying total transaction consideration at that date of more than $92M.
Teck Resources Limited announced that it will present its Q3, 2025 results on October 22, 2025 (San Nicolas project, Zacatecas).
Aura Minerals Inc., reported Q3, 2025 production results from its Aranzazu mine in Zacatecas. The company produced 6,707 Oz Au, 141,117 Oz Ag, 9.73M Lb Cu, and 105K Lb, or 21,534 Oz AuEq.
Torex Gold Resources Inc., released strong Q3, 2025 production results from its Morelos Mine Complex in Guerrero. The company reported a payable production of 119,034 Oz Au and AuEq sold of 118.082 Oz. Q3, 2025 operational results are shown in the table below:

ON FINANCING

Mexican Gold Mining Corp., announced a non-brokered private placement of up to 10,000,000 of units at a price of CAD $0.085 per unit for gross proceeds of up to CAD $850K. The company intends to use the gross proceeds as working capital for general corporate purposes (Las Minas project, Veracruz).
Starcore International Mines Ltd., reported that the $5M private placement previously announced has been oversubscribed due to the strong support from investor. Tranche 1 closed on September 26, 2025, raised CAD $2,661,788.75 through the issuance of 10,647,155 units, including common shares and warrants. Tranche 2 is also oversubscribed, and the company is no longer accepting subscriptions (San Martin mine, Queretaro).
Colibri Resource Corporation announced that it intends to conduct two non-brokered private placements: an equity offering of up to 8,666,666 units at a price of CAD $0.15 per unit for gross proceeds of up to CAD $1.3M, and a second of up to 250 convertible debenture units for gross proceeds of up to CAD $250K. The company plans to use the net proceeds to fund exploration at Pilar and EP projects in Sonora, and for general working capital.
Vortex Metals Inc., closed its previously announced upsized non-brokered private placement for gross proceeds of CAD $700K by the issuance of 17,500,000 units at a price of CAD $0.04 per unit, and then, due to interest from an existing strategic investor, it intends to close a second tranche of a maximum of 2,625,000 units at a price of CAD $CAD $0.04 per unit for gross proceeds of CAD $105,000. The company announced that 40% of the net proceeds will be used to pay mining concession 40% for exploration fees, and 20% for general working capital purposes. (Zaachila and Riqueza Marina projects, Oaxaca).
Silver Tiger Metals Inc., closed its previously announced bough deal offering of 39,962,500 shares at a price of CAD $0.72 for gross proceeds of CAD $28,773,000. The company plans to use the proceeds of the offering to fund exploration and development expenditures at the company’s El Tigre Project in Sonora, as well as for working capital and general corporate purposes.
Questcorp Mining Inc., revised the terms of its previously announced non-brokered private placement and now will offer up to 7,500,000 units at a price of CAD $0.20 per unit for gross proceeds of up to CAD $1.5M. Part of the net proceeds will be used for the advancement of the ongoing exploration and drilling program at La Union project in Sonora, and for general working capital purposes.
Fuerte Metals Corporation closed its previously announced offering for an aggregate of 34,848,485 subscription receipts at a price of CAD $1.65 per subscription receipt for gross proceeds of CAD $57.5M (Cristina project, Chihuahua).
Guanajuato Silver Company Ltd., closed its previously announced bough deal public offering of 87,000,000 units at a price of CAD $0.50 per unit for gross proceeds of CAD $43.5M. Gross proceeds will be used for sustaining and development capital for the Company’s four operating mines in Mexico, working capital and general corporate purposes (El Cubo mine, Guanajuato).
Pantera Silver Corp., announced a non-brokered private placement of up to 7,000,000 units at a price of CAD $0.75 per unit for gross proceeds of up to CAD $3.5M. The company intends to use the gross proceeds for exploration work, potential additional property acquisitions and general working capital (Nuevo Taxco Silver project, Guerrero).
Bear Creek Mining Corporation announced drawdown of funds in the amount of USD $1.2M under Sandstorm Gold Ltd., note. “The principal amount of the 2025 Sandstorm note is a maximum of USD $6.5M, of which the company may draw down up to USD $600K per month. An aggregate total of funds drawn to date is USD $5.4M and the remaining amount of up to USD $1.1M may be drawn down subject to prior approval by Sandstorm in its sole discretion. The draw will be used for general working capital purposes” (Mercedes mine, Sonora).
Silver Storm Mining Ltd, secured a USDS $7M offtake prepayment financing agreement for 18 months with Samsung C&T Hongkong Ltd and QSSC S.A. de C.V., at a 1-Month Secured Overnight Financing Rate + 4.75 %, to restart operations at its la Parrilla Silver Mine Complex in Durango. Samsung will purchase 100% of the lead-silver and zinc concentrates produced at La Parrilla for two years. The funds will be used for mill rehabilitation, underground development, and working capital.
US Antimony Corporation announced that it entered into a securities purchase agreement of 2,337,657 shares of common stock with a leading long-only mutual fund for aggregate proceeds of approximately USD $25M (Los Juarez project, Queretaro).

ON RESOURCES AND DEVELOPMENT

Southern Silver Exploration Corp., initiated a drilling program at the Puro Corazon mine, which is adjacent to its 100% owned Cerro Las Minitas project in Durango, Mexico. Current development at the mine extends for approximately 200m laterally and to 250m below surface. The exploration program aims to integrate the nine-hectare Puro Corazon claim into the larger project and includes up to 12,000 meters of core drilling using three drill rigs. Drilling will test the further projections of the mined mineralization both laterally for an additional 200m and to depths of up to 450 metres below surface where the mineralization then transitions across the claim boundary and into the modelled Skarn Front deposit. Drilling will also target the projection of up to six hangingwall structures identified outboard of the main mineralized Skarn Front zone which was previously identified in both historic drilling within the Puro Corazon claim and in Southern Silver’s own drilling outside the claim boundary. The program will also compile existing geological data, conduct new sampling in historic underground workings, and perform a LiDAR survey to assess the extent of underground mining. Currently, the Puro Corazon mine is privately operated, producing approximately sixty tonnes of ore per day, generating silver-lead and zinc concentrates. The drilling will target lateral projections of mineralization and depths of up to 450 meters below the surface, focusing on six identified hangingwall structures. Results from this drilling will be incorporated into an updated Technical Report and Preliminary Economic Assessment (PEA) scheduled for the first quarter of 2026.
Heliostar Metals Ltd., released results from the current 15,000m drill program at its Ana Paula project in Guerrero. Drilling highlights include holes AP-25-329 with 3.29 g/t Au over 12.75m, and 5.17 g/t Au over 6.4m, and 8.82 g/t Au over 88.05m including 13.03 g/t Au over 35.5m; hole AP-25-326 with 6.29 g/t Au over 2.2m, and 2.37 g/t Au over 7m, and 18.8 g/t Au over 1m, and 2.86 g/t Au over 23m, including 4.19 g/t Au over 14.3m; and hole AP-25-327 with 32.1 g/t Au over 1.25m, and 2.75 g/t Au over 21.7m, including 8.36 g/t Au over 1.5m, and 2.73 g/t Au over 62.65m, including 4.61 g/t Au over 20.5m, and 5.63 g/t Au over 5m. The program has the primary goal of converting inferred ounces to higher confidence classifications, as well as supporting the ongoing Feasibility Study and testing the next exploration targets around the Ana Paula deposit.
Mithril Silver and Gold Limited reported exploration results from its Copalquin project in Durango. A district wide aerial magnetic survey is to commence later this month. Systematic mapping and sampling are ongoing at Target 3 to define priority targets, with maiden drilling planned in the coming months. At Target 5, an initial 5,000m drilling program is underway around the Apomal historic mine, with the first nine holes completed. The drilling aims to explore areas down-dip and along strike from old mine workings. Assays are pending. Mapping and sampling extended the silver-rich target to over 2km by 2km. Underground sampling highlights include 2.02 g/t Au and 1,938 g/t Ag over 3.21m including 2 g/t Au and 3,300 g/t Ag over 1.40 from the Tasonera Mine Level 2; and 10.25 g/t Au and 895 g/t Ag over 0.6m, and 3.31 g/t Au and 219 g/t Ag over 0.9m from Los Martires. Surface sampling highlights include 3.89 g/t Au and 157 g/t Ag over 0.5m from La Candelaria; 0.145 g/t Au and 284 g/t Ag over 0.5m from La Tasolera; 3.75 g/t Au and 555 g/t Ag over 0.65m and 24.5 g/t Au and 670 g/t Ag over 0.6m from Apomal; and 4.69 g/t Au and 520 g/t Ag over 0.5m from Los Martires. All these results indicate a significant presence of high-grade gold and silver mineralization in the Target 5, with notable underground and surface sample assays, suggesting strong potential for further exploration and resource development in the Copalquin district.
Torex Gold Resources Inc., released results from drilling program at ELG underground, primarily focused on drilling around the El Limón Sur and Sub-Sill trends within its Morelos Mine Complex in Guerrero. Drilling highlights for two second order structures running parallel to both the El Limón Sur and Sub-Sill trends, El Limón Sur Trend and Sub-Sill Trend are shown in the next three table below respectively:

These new results continue to support the company’s target of extending the mine life of ELG Underground by identifying new structures of higher-grade mineralization, expanding resources, and replacing mined reserves.

ON DEALS AND CORPORATE ISSUES

Mithril Silver and Gold Limited notified to shareholders that its annual general meeting will be held on November 5, 2025 (Copalquin project, Durango).
Pedro Resources Ltd., announces the appointment of David McDonald as its CEO, effective October 1, 2025 (Mapimi project, Durango).
Quetzal Copper Inc., received conditional acceptance from the TSX Venture Exchange for its reverse takeover transaction with Silverco Mining Corp. The deal centers around round Silverco´s 100% stake in the Cusi mine in Chihuahua which features past producing mines and new exploration opportunities. Quetzal plans to rename itself Silverco Mining Ltd. and continue trading on the TSX Venture Exchange under the symbol “SICO”.
Sandstorm Gold Royaltys´ shareholders voted overwhelmingly to approve a plan of arrangement under which Royal Gold Inc., will acquire all of Sandstorm’s outstanding shares. The approval was secured by more than 98 % of the votes cast, meeting the required thresholds under Canadian securities regulations. The transaction is expected to close around October 20 2025. After completion, Sandstorm will delist from the Toronto and New York stock exchanges, cease reporting as a public issuer, and deregister its shares under U.S. securities law.
Agnico announced Mines Limited announced that it acquired 5,000,000 subscription receipts of Fuerte Metals pursuant to a brokered private placement, at a price of CAD $1.65 per subscription receipt for a total consideration of CAD $8,250,000.
Zacatecas Silver Corp., granted 5,000,000 stock options to its directors, officers, and consultants. Each option is exercisable at a price of CAD $0.11 per share for a period of five years from the date of grant (Zacatecas Silver project, Zacatecas).

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, flow banded rhyolite dome in Durango, Mexico. Photo taken by Miguel A Heredia.

The Mining and Exploration News in Mexico: Highlights on the Fourth Week of August, 2025

August 31, 2025 / gambusinoprospectormexico / Leave a comment

Phreatic Breccia

By Miguel A Heredia

During the 35^thweek of the year (August 25^thto August 31^st2025), at least 28 press releases were announced by companies working in Mexico, with nine announcing financial rounds, seven disclosing deals and corporate issues, five communicating production results, four reporting resources and developments of their properties, two informing on exploration results, an one commenting on Mexican issues. ON MEXICO ISSUES, Heliostar, Mithril, and Luca Mining reported the best drilling intercepts in Mexico on the fourth week of August, 2025. ON EXPLORATION, Minaurum announced that it is ramping up its exploration efforts at its Alamos Silver project in Sonora by adding more drill rigs to speed up their 10,000m infill drilling program. Kingsmen provided an update of the drilling progress on its Las Coloradas project in Chihuahua. ON MINING, Impact Silver reported Q2, 2025 financial results from their Mexican mine operations (Zacualpan, Estado de Mexico and Plomosas, Chihuahua). Orogen presented Q2, 2025 financial results from El Ermitaño mine in Sonora where it holds a 2% net smelter royalty. Luca Mining announced Q2 and H1, 2025 consolidated operating and financial results from their Campo Morado and Tahuehueto mines in Guerrero and Durango respectively. DynaResource reported Q2, 2025 results from its San Jose de Gracia mine in Sinaloa. Guanajuato Silver reported Q2, 2025 consolidated operating and financial results. ON FINANCING, Regency Silver due to strong investor demand upsized its previously announced brokered private placement offering to gross proceeds of CAD $3.58M (Dios Padre project, Sonora). Starcore announced a non-brokered private placement financing for gross proceeds of up to CAD $5M (Tortilla project, Queretaro). Goldgroup revised twice its previously announced non-brokered private placement offering to raise gross proceeds of up to CAD $4M (Cerro Prieto mine, Sonora). Sonoro Gold increased, in response to investors demand, its previously announced non-brokered private placement offering to 10,000,000 units for gross proceeds of CAD $1.5M (Cerro Caliche project, Sonora). Pacifica Silver closed the second tranche of its previously announced non-brokered private placement financing for gross proceeds of CAD $450K (Claudia project, Durango). United States Antimony announced a purchase agreement for a registered direct offering of common shares for gross proceeds of USD $18M (Madero smelter operation, Coahuila). Masivo closed the first tranche for gross proceeds of CAD $845K (Cerro Colorado project, Sonora). ON RESOURCES AND DEVELOPMENT, Heliostar released its first results from the current 15,000m drill program at its Ana Paula project in Guerrero. Luca Mining announced results from 6 surface drill holes and five underground drill holes from the Reforma Deposit in its Campo Morado project in Guerrero. Mithril provided an update regarding the ongoing activities at its Copalquin project in Durango. ON DEALS AND CORPORATE ISSUES, MAG Silver and Pan American Silver received approval from the Mexican Federal Economic Competition (COFECE) for Pan American to acquire all the shares of MAG Silver. Avino purchased and extinguished all of the outstanding royalties and contingent payment obligations to acquire 100% ownership of its La Preciosa project in Durango. Alamos Gold declared a quarter dividend of USD $0.025 per common share (Mulatos mine, Sonora). MAG Silver announced preliminary results regarding shareholder election for the form of consideration in the Pan American acquisition (Juanicipio mine, Zacatecas). Luca Mining acquired from Fresnillo plc a 100% interest in the Humaya 3 mining concession at its Tahuehueto property in Durango for USD $400K. DynaResource entered into an updated agreement with Ocean Partners UK for a credit line facility expansion and offtake extension (San Jose de Gracia mine, Sinaloa). ON SOCIAL RESPONSIBILITY, Alamos Gold released its 2024 annual ESG report (Mulatos mine, Sonora).

ON MEXICO ISSUES

Heliostar Metals Ltd., Mithril Silver and Gold Limited, and Luca Mining Corp., reported the best drilling intercepts in Mexico on the fourth week of August, 2025. Details are shown in the table below:

ON EXPLORATION

Minaurum Gold Inc., announced that it is ramping up its exploration efforts at its Alamos Silver project in Sonora by adding more drill rigs to speed up their 10,000m infill drilling program. The company has already drilled over 3,000m testing important veins like Promontorio, Europa-Guadalupe, and Travesia. Minaurum is aiming to deliver their first resource estimate soon.
Kingsmen Resources Ltd., provided an update of the drilling campaign progress at its Las Coloradas project in Chihuahua. The company has completed to date a maiden drill program of 3,227.2m in 12 core holes, testing short segments of the historic Soledad and Soledad vein systems and a geophysical target defined by induced polarization and magnetic surveys. Significant untested lengths remain, including the Saddle, Silvia and La Plata targets. Drill results to date have confirmed that mineralization extends along strike and beneath the water table, validating the geological model and suggesting a potential discovery, with assay results still pending.

ON MINING

Impact Silver Corp., reported Q2, 2025 financial results from their Mexican mine operations. At Zacualpan, Estado de Mexico, Impact processed 69,185 tonnes with an average grade of 158 g/t Ag to produce 295.1K Oz Ag and 237 Oz Au. At Plomosas mine, Chihuahua, the company processed 27,747 tonnes of 8.4% Zn, 4.6% Pb, and 30 g/t Ag to produce 3.91M Lb Zn, 889.3K Lb Pb, and 17.67K Oz Ag. Impact also presented consolidated financial results (all currency reported in Canadian dollars) reporting revenue of $9.8M; mine operating income before amortization and depletion of $1.6M; loss of $0.5M in deferred taxes; $1.1M in exploration, $0.6M in amortization; and $2M in depletion. The company also reported cash of $10.3M and $13.3M in working capital.
Orogen Royalties Inc., presented Q2, 2025 financial results from El Ermitaño mine in Sonora where it holds a 2% net smelter royalty (all amounts are in Canadian dollars unless otherwise stated). 269,830 tonnes of 55 g/t Ag and 2.54 h/t Au with metallurgical recoveries of 64% and 94% respectively were processed to produce 467 Oz AuEq. The company reported $2.1M royalty revenue from the sale of the 467 Oz AuEq produced at an average realized price of USD $3,280 per Oz Au; exploration expenses of $3.9M ; net income before taxes of $0.6M; net comprehensive loss of $0.2M; G&A expenses of $1.7M; cash flow of $1.8M; and working capital of $27.8M as of June 30, 2025.
Luca Mining Corp., announced Q2 and H1, 2025 consolidated operating and financial results from their Campo Morado and Tahuehueto mines in Guerrero and Durango respectively All amounts are in US dollars). In Q2, 2025 Luca Mining mined 250,879 tonnes and processed 253,717 tonnes (181,320 tonnes at Campo Morado and 72,397 tonnes at Tahuehueto) to produce 6,622 Oz Au, 279.8K Oz Ag, 2.2M Lb Pb, 11.96M Lb Zn, and 2.6M Lb Cu (17.86K Oz AuEq) and sold 5,445 Oz Au, 209.4K Oz Ag, 825K Lb Pb, 8.97M Lb Zn, and 1.81M Lb Cu at cash and AISC of $2,2775 and $3,310 per Oz AuEq sold respectively. In H1, 2025, the company mined 510,385 tonnes and processed 499,999 to produce 145,298 Oz Au, 630.5K Oz Ag, 4.6M Lb Pb, 23.5M Lb Zn, and 5.1M Lb Cu (39.15K Oz AuEq) and sold 12,165 Oz Au, 482.6K Oz Ag, 1.8M Lb Pb, 17.36M Lb Zn, and 3.64M Lb Cu at cash and AISC of $2,073 and $2,732 per Oz AuEq sold respectively. Luca also announced financial results for the period Q2, 2025 reporting revenues of $36.8M; mine operating cash flow of $9.1M; mine operating cash flow before taxes of $12.05M; negative net earnings of $3.23M; negative net free cash flow before working capital of $4.5M; EBITDA of $1.2M; and adjusted EBITDA of $5.8M. For the period H1, 2025, the company reported revenues of $75.4M; mine operating cash flow of $22.4M; mine operating cash flow before taxes of $27.8M; net earnings of $1.3M; net free cash flow before working capital of $4.9M; EBITDA of $8.7M; and adjusted EBITDA of $18.2M.
DynaResource Inc., reported Q2, 2025 results from its San Jose de Gracia mine in Sinaloa (all amounts are in US dollars). The company mined 74,002 tonnes and milled 66,834 tonnes of 3.63 g/t Au with a metallurgical recovery of 74.64% to produce 5,701 Oz Au. DynaResource reported revenue of $15.9M; total operating expenses of $13.14M; net operating income of $2.7M; net income of $0.5M; operating cash flow before change in non-cash working capital items of $2.85M; and cash flow used in operating activities of $1.14M.
Guanajuato Silver Company Ltd reported Q2, 2025 consolidated operating and financial results from their min operations in Guanajuato (El Cubo mines complex, Valenciana mines complex and San Ignacio mine), and Durango (Topia mine). Consolidated results are shown in the table below (all currency is expressed in US dollars):

ON FINANCING

Regency Silver Corp., due to strong investor demand upsized its previously announced brokered private placement offering to 35,847,250 units at a unit price of CAD $0.10 per unit on a post consolidation basis for gross proceeds of up to CAD $3.584,725M. The consolidation of the company’s common shares on a 1 new for 2 old basis is scheduled to be effective on or about August 26, 2025. Later on, the company announced four upsize of its previously announced brokered private placement financing to 40,000,000 units at a price of CAD $0.10 per unit for gross proceeds of CAD $4M. The purpose of the financing is to use the gross proceeds for drilling the Dios Padre project in Sonora, and for general working capital purposes.
Starcore International Mines Ltd., announced a non-brokered private placement financing of 20,000,000 units at a price of CAD $0.25 per unit for gross proceeds of up to CAD $5M. Gross proceeds will be used primarily towards bulk sampling and the development of the recently announced Tortilla project in Queretaro.
Goldgroup Mining Inc., revised its previously announced non-brokered private placement offering will still consists of up to 5,000,000 units at a price of CAD $0.80 per unit to raise gross proceeds of up to CAD $4M. Later on, Goldgroup revised the term again and now the offering will consists of up to 4,848,485 units at a price of CAD $0.825 per unit for CADS $4M in opposed to the 5,000,000 units at a price of CAD $0.80 previously disclosed. The proceeds will primarily fund the company’s efforts to optimize its Cerro Prieto mine in Sonora and pursue strategic acquisitions in the mining sector.
Sonoro Gold Corp., increased, in response to investors demand, its previously announced non-brokered private placement offering to 10,000,000 units for gross proceeds of CAD $1.5M. The offering price remains at CAD $0.15 per unit. Net proceeds will be used to fund the ongoing development of its Cerro Caliche project in Sonora, as well as for working capital.
Pacifica Silver Corp., closed the second tranche of its previously announced non-brokered private placement financing of 900,000 units at a price of CAD $0.50 for gross proceeds of CAD $450K. Together with the first tranche, Pacifica has raised a total of CAD $10M. Pacifica plans to use the gross proceeds for the upcoming exploration and drill work at its Claudia project in Durango, as well as general working capital.
United States Antimony Corporation announced a purchase agreement for a registered direct offering of common shares priced at USD $4.5 per share for gross proceeds of USD $18M from a single institutional investor. Nets proceeds will be used to buy more antimony, boosting their smelter´s production at Madero, Coahuila, working capital and potential acquisitions of other critical mineral companies or specific properties currently under review by management. The offering is expected to close around August 28, 2025, subject to customary conditions.
Masivo Silver Corp., closed partially the first tranche of a financial round for gross proceeds of CAD $845K but expects to raise up to CAD $1M. The private placement at CAD $0.06 with a half warrant at CAD $0.10 for a 12-month term will close on August 29, 2025. Masivo still has a CADS $75K drill credit in Mexico and expects to start drilling the Cerro Colorado project in Sonora in Q4, 2025.

ON RESOURCES AND DEVELOPMENT

Heliostar Metals Ltd., released its first results from the current 15,000m drill program at its Ana Paula project in Guerrero. Drilling highlights include holes AP-25-325 with 2.1 g/t Au over 13.1m, plus 3.31 g/t Au over 65.2m, including 6.29 g/t Au over 30.2m, plus 12.6 g/t Au over 4.5m, 2.25 g/t Au over 6m, and plus 6.43 g/t Au over 2.3m; hole AP-24-322 with 3.77 g/t Au over 21.2m, plus 6.67 g/t Au over 20.95m, plus 13.6 g/t Au over 14.75m, including 45.81 g/t Au over 3.85m, plus 2.14 g/t Au over 10.55m; and hole AP-24-323 with 7.81 g/t Au over 4m, plus 2.26 g/t Au over 11m, plus 8.72 g/t Au over 12.2m, including 24.4 g/t Au over 3.7m. Heliostar has completed 5,556m in 18 holes to date. “The program has the primary goal of converting inferred ounces to higher confidence classifications as well as supporting the ongoing Feasibility Study and testing the next exploration targets around the Ana Paula deposit”.
Luca Mining Corp., announced results from 6 surface drill holes and five underground drill holes from the Reforma Deposit in its Campo Morado project in Guerrero. Drilling highlights are shown in the table below:

Mithril Silver and Gold Limited provided an update regarding the ongoing activities at its Copalquin project in Durango. The company is conducting a fully funded 45,000m drilling program targeting multiple areas, including Target 1, Target 5, and target 3, with plans to add a third drill rig in early 2026. At target 1, the company has drilled La Soledad East intercepting in hole MTHLS25-35 high grade including 9.95 g/t Au and 45 g/t Ag (10.59 g/t AuEq) over 1.1m and hole MTH-LS25-36 with 3.21 g/t Au and 14 g/t Ag (3.41 g/t AuEq) over 0.5m, plus 8.63 g/t Au and 41 g/t Ag (9.21 g/t AuEq) over 3.3m, including 48.85 g/t Au and 92 g/t Ag (50.16 g/t AuEq9 over 0.5m; while at Zaragoza South it confirmed high-grade mineralization, in hole MTH-ZG25-037 including 6.4 g/t Au and 4,400 g/t Ag (4,848 g/t AgEq) over 0.57m, plus 3.49 g/t Au and 127 g/t Ag (371 g/t AgEq) over 0.66m; and Refugio West where step out drilling is targeting extensions towards El Gallo. At Target 3 Mithril is currently carrying out systematic mapping and sampling to define targets for a maiden drill program. At Target 5 (Apomal historic mine) drilling has commenced with three holes completed in a 5,000m program focused on testing veins along strike and a depth. Mithril aims to expand the resource footprint, conduct additional drilling and complete an aeromagnetic survey in Q4, 2025.

ON DEALS AND CORPORATE ISSUES

MAG Silver Corp., and Pan American Silver Corp., received approval from the Mexican Federal Economic Competition (COFECE) for Pan American to acquire all the shares of MAG Silver. The deal is expected to be closed by around September 4, 2025. MAG shareholders need to decide no later than 2:00 PM (Vancouver time) on August 27 whether they want to receive either USD $20.54 in cash for each MAG share held; or the default election of USD $0.0001 in cash and USD $0.755 of a common share of Pan American for each MAG share held.
Avino Silver & Gold Mines Ltd., purchased and extinguished all of the outstanding royalties and contingent payment obligations to acquire 100% ownership of its La Preciosa project in Durango. The company acquired the La Preciosa obligations from Deterra Royalties Limited for a total consideration of USD $22M, consisting of USD $13.25M upfront payment and an $8.75M deferred payment due within a year after initial production, and a payment of USD $0.25 per Oz AgEq of new mineral reserves discovered and declared outside of the current mineral resource area, subject to a cap of USD $50M.. It also acquired royalty obligations, which include a 1.25% net smelter returns royalty on the Gloria and Abundancia veins, and a 2% gross value returns royalty on the remainder of the La Preciosa resource. This acquisition allows Avino to eliminate these royalty burdens prior to commencing production.
Alamos Gold Inc., declared a quarter dividend of USD $0.025 per common share payable on September 25, 2025 to shareholders of record as of the close of business on September 11, 2025. The company has paid dividends for 16 consecutive years, including returning USD $32 million thus far in 2025 (Mulatos mine, Sonora
MAG Silver Corp., announced preliminary results regarding shareholder election for the form of consideration in the Pan American Silver Corp acquisition. Shareholders could elect to receive, either USD $20.54 cash or USD $0.001 cash plus 0.755 of a Pan American share per MAG share, subject to proration. The preliminary results show that approximately 1.71% of MAG shareholders elected to receive cash, about 30.55% chose shares of Pan American, and approximately 67.74% did not make a valid election and are deemed to have opted for shares. The final outcome will be determined after the final election results are certified. The transaction has received all necessary approvals and is expected to close around September 4, 2025. Due to proration, some shareholders may receive a combination of cash and shares regardless of their election choice. Following the arrangement, MAG Silver shares are expected to be delisted from the Toronto Stock Exchange and New York Stock Exchange American LLC, and application has been made to cease being a reporting issuer (Juanicipio mine, Zacatecas).
Luca Mining Corp., acquired from Fresnillo plc a 100% interest in the Humaya 3 mining concession for USD $400K. It comprises 2,507 hectares and directly surrounds to the Tahuehueto mine in Durango and is not subject to any underlying NSR royalties. The acquisition expands Luca´s land position by over 25% reaching approximately 10,000 hectares, providing new exploration prospects, especially since mineral veins hosting current mineral resources extend into the acquired mineral concession, supporting their growth strategy.
DynaResource Inc., entered into an updated agreement with Ocean Partners UK Limited for a credit line facility expansion and offtake extension (all amounts are expressed in US dollars). The concentrate credit line facility replaces the previous one and increase funding from $12.5M to $15M, includes a 6-months grace period on principal repayments, and features competitive interest rates. The offtake agreement for gold concentrate production from San Jose de Gracia mine in Sinaloa has been extended to December 31, 2030, with improved gold payability terms. These agreements aim to enhance working capital, support mine development, and optimize operations for long-term growth.

ON SOCIAL RESPONSIBILITY

Alamos Gold Inc., released its 2024 Environmental, Social, and Governance (ESG) report. Highlights include USD $1.5M invested in local community initiatives; zero significant environmental incidents; over 100,000 hours of employee training; 9% reduction in total scope 3 greenhouse gas emissions; 98% of procurement expense with in-country suppliers; and five consecutive years of compliance with the World Gold Council´s Responsible Gold Mining Principles (Mulatos mine, Sonora).

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, phreatic breccia in a low sulphidation epithermal vein system in a project in Guanajuato, Mexico. Photo taken by Miguel A Heredia.

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

August 24, 2025August 24, 2025 / Gambusino Prospector / Leave a comment

By Jorge Cirett

During the 34th week of the year (August 18th to August 24th, 2025), companies working in Mexico presented 33 press releases. One company presented exploration advances on its early-stage property. Five companies presented quarterly reports. Ten companies presented news on financing rounds and share-related issues. Three companies presented drilling results from their advanced properties. One company received a key acceptance of a surface rights agreement. Fifteen companies informed on deals and corporate issues. ON MEXICO ISSUES, The SGM has been given the first orders by the Economy Ministry to perform exploration activities in three projects. ON EXPLORATION, In Sonora, Questcorp informed on its drill program at La Union. ON MINING, Starcore International Mines, Elemental Altus Royalties, Santacruz Silver Mining, Sailfish Royalty and Sierra Madre Gold and Silver released Q2 2025 results. ON FINANCING, six companies informed on financing rounds: Regency Silver (C$2.5 M, upsized to C$3.1 M), Mammoth Resources (C$980 K), Sonoro Gold (C$525 K), Goldgroup Mining (C$4 M), Pacifica Silver (C$10 M) and Guanajuato Silver Company (C$18 M). Sonoro Gold informed on the terms of a loan. Apollo Silver and Kootenay Silver granted stock options. ON RESOURCES AND DEVELOPMENT, Sonoro Gold received acceptance by the TSX for the surface rights agreement at Cerro Caliche. Avino Silver and Gold reported drilling results from La Preciosa. First Majestic Silver disclosed results from drilling at San Dimas. GR Silver Mining announced drilling results from its Plomosas project. ON DEALS AND CORPORATE ISSUES, Silver Dollar Resources and Canasil Resources informed on their AGMs. Pacifica Silver, United States Antimony, Kootenay Silver, Tocvan Ventures and Colibri Resource announced appointments to the board. Apollo Silver engaged a service provider. Mag Silver informed on its acquisition by Pan American Silver. Reyna Silver and Torex Gold updated on its acquisition by Torex. Xali Gold informed on its status under the TSX and on the cancellation of claims at El Oro. Capitan Silver acquired mining concessions from Fresnillo plc at Cruz de Plata. EV Resources signed an MOU with Wogen Resources and Xcelsior Capital Advisors. Galore Resources updated on its Los Gemelos and Duraznillo projects. ON SOCIAL RESPONSIBILITY, no relevant news

ON MEXICO ISSUES

The Economy Ministry (Secretaría de Economía) emitted three exploration orders to the Mexican Geological Survey (Servicio Geológico Mexicano, or SGM). The orders posted In the Official Gazette (Diario Oficial de la Federación) grant the SGM the initial exploration works at Las Granadas (Estado de México), La Soledad (in Durango) and Delia (in Sonora). (Note by the editor.- This is a feeble attempt by the government to try to make function an exploration system depicted in the new mining law that basically is unworkable in any meaningful way, other than that of plain demagogy).

ON EXPLORATION

Questcorp Mining Inc. announced the completion of 25% of the planned 1,200 to 1,500 m drill program at La Union, in Sonora.

ON MINING

Starcore International Mines Ltd. announced production results for the first fiscal quarter ended July 2025. At its San Martin mine in Queretaro, the company milled 54.3 K tonnes averaging 1.47 gpt Au, 12.9 gpt Ag, recovering 77.4% Au, 54.8% Ag, to produce 2,130 gpt AuEq. “During the quarter, the CIL (carbon-in-leach) process for carbonaceous ore was fine-tuned and necessary adjustments were made to optimize the process”.
Elemental Altus Royalties Corp. announced its operating and financial results for Q2 2025. The company had revenue of US$9.1 M, adjusted revenue of US$105 M, operating cash flow plus Caserones dividend of US$14.4 M, attributable 3,184 Oz Au Eq and adjusted EBITDA of US$8.8 M, with guidance revenue increased to US$35 M to US$40 M (Royalty on Mercedes, Sonora).
Santacruz Silver Mining Ltd. reported its financial and operating results for Q2 2025. The company had revenue of US$73.3 M, gross profit of US$25.3 M, net income of US$21.0 M, adjusted EBITDA of US$26.8 M, working capital of US$60.3 M and cash and short and long term investments of US$57.8 M. The company produced 3.55 M Oz AgEq on its mines in Mexico and South America at an AISC of $22.95 per Oz AgEq (Zimapán, Hidalgo).
Sailfish Royalty Corp. announced operating and financial results for the second quarter of 2025. During the period Sailfish earned US$626 K in royalties, earning 8 Oz Au, 1,672 Oz Ag from stream interests. Total revenue was US$713.2 K, for a gross profit of US$687 K, net income of US$185.3 K, declaring a quarterly dividend of US$0.0125 per common share (royalty on Gavilanes, Durango).
Sierra Madre Gold and Silver Ltd. provided financial results for Q2 2025. During the period the company had net revenue of US$5.36 M, adjusted EBITDA of US$1.46 M and a gross profit of US$1.29 M. At La Guitarra in Estado de México, 41.2 K tonnes were milled, recovering 76.6% Ag, 78% Au, to produce 66 K Oz Ag, 1,001 Oz Au. Sierra Madre closed the first and second tranches of a C$19.5 M brokered private placement during the quarter.

ON FINANCING

Sonoro Gold Corp. announced the completion of cash payments of US$3.12 M to a lessor, satisfying the financial obligations in year 1 of the agreement. The company will issue 5 M common shares to the lessor at a deemed issue price of CAD $0.15 Common Share. “Funding for year-1 payment requirements under the Agreement was financed by unsecured shareholder loans aggregating to US $2,900,000 (the “Loans”) by Company directors, bearing annual interest of 10%, plus a 7% lending fee” (Cerro Caliche, Sonora).
Apollo Silver Corp. approved the annual grant of 4.41 M stock options, restricted share units and deferred share units to certain employees, officers, directors and consultants (Cinco de Mayo, Chihuahua).
Regency Silver Corp. upsized its previously announced best efforts brokered private placement led by Centurion One Capital Corp. for aggregate gross proceeds of up to C$2.5 M (Dios Padre, Sonora).
Mammoth Resources Corp. received approval from the TSX Venture Exchange for a final closing for gross proceeds of C$980 K (Tenoriba, Chihuahua).
Sonoro Gold Corp. announced a non-brokered private placement offering for gross proceeds of C$525 K (Cerro Caliche, Sonora).
Kootenay Silver Inc. announced stock purchase options have been granted to a consultant to purchase up to 250 K shares of Kootenay at a price of $1.19 per common share for a period of two years. (Columba, Chihuahua).
Pacifica Silver Corp. closed the first tranche of its previously announced C$10 M non-brokered private placement financing. Participants included Vizsla Silver Corp., First Majestic Silver Corp., Silver Corp. Metals Inc. and 2176423 Ontario Ltd. (Claudia, Durango).
Goldgroup Mining Inc. arranged a non-brokered private placement for gross proceeds of up to C$4 M (Cerro Prieto, Sonora).
Guanajuato Silver Company Ltd. announced the closing of its previously announced non-brokered listed issuer financing exemption (LIFE) private placement for aggregate gross proceeds of C$18 M. “In connection with the Offering, the Finders received a cash commission of $520,463.92, and 1,727,904 nontransferable finder’s warrants”. Certain directors and officers acquired an aggregate of 2.1 M units for gross proceeds of C$630 K (El Cubo, Guanajuato).
Regency Silver Corp. upsized its previously announced best efforts brokered private placement for aggregate gross proceeds of C$3.1 M (Dios padre, Sonora).

ON RESOURCES AND DEVELOPMENT

Sonoro Gold Corp. received the final acceptance from the TSX Venture Exchange for the surface rights lease agreement for the Company’s Cerro Caliche Gold Project in Sonora, Mexico.
Avino Silver & Gold Mines Ltd. reported results from 1,100 m of drilling in four twin holes at La Preciosa, Durango. The positive results are from La Abundancia and La Gloria veins. Highlighted true width intervals comprise 7.90 m @ 1.92 gpt Au, 1,638 gpt Ag (including 1.84 @ 0.61 gpt Au, 5,006 gpt Ag); 14.80 @ 0.38 gpt Au, 257 gpt Ag (including 5.04 m @ 0.72 gpt Au, 594 gpt Ag); 6.42 m @ 0.46 gpt Au, 544 gpt Ag; 3.45 m @ 0.44 gpt Au, 970 gpt Ag (including 1.17 m @ 0.64 gpt Au, 1,936 gpt Ag); 3.41 m @ 0.36 gpt Au, 398 gpt Ag. “Mineralization at the La Preciosa is hosted within multiple discrete poly-phase quartz veins, often displaying banded, smoky, drusy, and chalcedonic textures. Also, in each stage, there is variably crustiform banded fracture fill/breccia cement mineralogy”.
Colibri Resource Corp. congratulated its joint venture partner, Tocvan Ventures Corp., on receiving permit approval for a 50 K tonnes pilot mine facility located in close proximity to the Pilar project, a 49% Colibri – 51% Tocvan joint venture.
First Majestic Silver Corp. reported drilling results from its exploration program at the San Dimas mine in Durango. The drilling program is focused in exploring for new veins, expand and upgrade mineral resources, highlighted true width results comprise 0.75 m @ 9.94 gpt Au, 546 gpt Ag; 0.95 m @ 5.35 gpt Au, 302 gpt Ag; 0.89 m @ 7.77 gpt Au, 357 gpt Ag; 5.17 m @ 7.66 gpt Au, 357 gpt Ag; 1.59 m @ 13.07 gpt Au, 762 gpt Ag; 2.12 m @ 8.38 gpt Au, 282 gpt Ag; 3.57 m @ 15.93 gpt Au, 1,112 gpt Ag; 2.35 m @ 4.67 gpt Au, 289 gpt Ag; 1.06 m @ 23.70 gpt Au, 578 gpt Ag; 3.80 m @ 3.27 gpt Au,151 gpt Ag; 2.53 m @ 9.65 gpt Au, 121 gpt Ag.
GR Silver Mining Ltd. announced drilling results from its step-out drill program adjacent to the San Marcial deposit mineral resource area within the Plomosas project in Sinaloa. Highlighted core length intervals comprise 11.1 m @ 0.08 gpt Au, 64 gpt Ag; 22.9 m @ 0.06 gpt Au, 11 gpt Ag; 19.9 m @ 0.10 gpt Au, 206 gpt Ag (including 3.7 m @ 0.20 gpt Au, 511 gpt Ag and 4.2 m @ 0.10 gpt Au, 322 gpt Ag). All theses intervals contain between 0.1% to 0.8% Pb and between 0.1% to 0.9% Zn. “Drilling is ongoing with two diamond drill rigs, focusing on the SE Deep Extension target and the Parallel Breccia target.”.

ON DEALS AND CORPORATE ISSUES

Silver Dollar Resources Inc. informed that all resolutions put forth at the company’s annual general meeting (AGM), held on August 15, were approved by its shareholders (La Joya, Durango).
Pacifica Silver Corp. announced the appointment of Sophie Hsia to the board of directors and released results of its AGM (Claudia, Durango).
Apollo Silver Corp. engaged Creative Direct Marketing Group, Inc., an arm’s-length service provider, to provide marketing and advertising services for a total of US$1.62 M, payable in tranches (Cinco de Mayo, Chihuahua).
Colibri Resource Corp. announced thatJamie Lavigne has resigned from his position as director of the company. The company appointed Mark Smethurst, P. Geo, MSc, CFA-Level III Candidate, to the Board of Director (EP project, Sonora).
Canasil Resources Inc. announced shareholders voted in favor of all matters brought before its annual general meeting (AGM) held on August 7, 2025 (La Esperanza, Durango-Zacatecas).
Mag Silver Corp. announced today that, other than Mexican competition approval (COFECE), all required key approvals and authorizations to consummate the acquisition by Pan American Silver Corp. have been obtained. “If the COFECE Approval is obtained and all closing conditions are satisfied or waived, the Arrangement is expected to be completed in the third quarter of 2025. Following completion of the Arrangement, the MAG Shares are expected to be delisted from the Toronto Stock Exchange and NYSE American LLC” (Juanicipio, Zacatecas).
United States Antimony Corp. announced the addition of General John M. Keane, as an independent director to USAC’s board of directors (Juarez, Queretaro).
Kootenay Silver Inc. appointed Ron Miller as a director of the company (Columba).
Reyna Silver Corp. announced the completion of the previously announced plan of arrangement with Torex Gold Resources Inc.. pursuant to which Torex acquired all of the issued and outstanding shares of Reyna Silver (GuiGui, Chihuahua).
Torex Gold Resources Inc. announced the completion of the plan of arrangement with Reyna Silver Corp. (Morelos Complex, Guerrero).
Tocvan Ventures Corp. appointed Christopher Gordon as head of corporate development (Pilar, Sonora).
Xali Gold Corp. filed its audited annual financial statements. “The TSX Venture Exchange (“TSX.V”) is currently conducting a Listing Review of Xali Gold, which is a normal part of the review process after trading has been halted in a Company. The Company is working to resume trading as soon as possible”. The company is trying to overturn the cancellation of several mineral concessions at El Oro, Estado de México.
Capitan Silver Corp. executed a definitive agreement to acquire a strategic land package at its Cruz de Plata project in Durango. The property consists of 2,171.4 ha in seven mining concessions adjacent to and surrounding Cruz de Plata. The acquisition from Fresnillo plc involves the payment of an initial US$2 M (paid) and US$2 M payable on or before the second anniversary of the closing, with no royalties or share payments.
EV Resources Ltd. executed a try-party memorandum of understanding (MOU) with Wogen Resources Ltd. and Xcelsior Capital Advisors Ltd. Subject to a definitive agreement Wogen and XCLR will engage on a US$2–3 million secured debt facility to advance Los Lirios antimony project in Oaxaca towards production, and Wogen will be granted exclusive rights to offtake antimony products from Los Lirios, and Wogen and XCLR will provide EVR with technical input and market intelligence.
Galore Resources Inc. announced that it will host its annual and special general meeting of shareholders on October 23, 2025. The company has received interest in supporting development at Los Gemelos and Duraznillo in Zacatecas; however, recent proposals were not aligned with the long-term interests of shareholders. Discussions with other potential partners remain ongoing. “At Duraznillo, previously announced drilling was suspended due to delays in committed funding, following unforeseen circumstances with an investor group”.

ON SOCIAL RESPONSIBILITY

No relevant news.

On the image below: Chlorite-Epidote alteration in quartz monzonite on HQ core. Picture by Jorge Cirett.

EV Resources Executes Strategic MOU with Wogen and XCLR to Fund and Advance Los Lirios Antimony Project

August 22, 2025 / gambusinoprospectormexico / Leave a comment

2025-08-20_EV resources executes stratetig mou to fund and advance los lirios antimony project_oax Download

United States Antimony Announces A New Board Member Appointment of General John M. Keane to Its Board of Directors

August 19, 2025 / gambusinoprospectormexico / Leave a comment

2025-08-19_us antimony announces a new board member appointment Download

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

July 20, 2025 / gambusinoprospectormexico / Leave a comment

Barite crystals

By Miguel A Heredia

During the 29^thweek of the year (July 13^thto July 20^th 2025), at least 38 press releases were announced by companies working in Mexico, with fifteen disclosing deals and corporate issues, fifteen announcing financing rounds, three reporting resources and developments of their properties, two communicating production results, two informing on exploration results, and one commenting on Mexican issues. ON MEXICO ISSUES, Torex Gold and Minaurum Gold reported the best drilling intercepts in Mexico on the third week of July, 2025. ON EXPLORATION, In Sonora, Minaurum Gold reported drill results from a new vein zone target at the Promontorio Sur within its Alamos project. In Zacatecas and San Luis Potosi, Silver Valley Metals re-initiated exploration at the Mexi-Can Potash-Lithium project. ON MINING, Altius reported Q2, 2025 expected attributable royalty revenue of CAD $12M (Llano de Nogal project, Sonora). Bear Creek reported Q2, 2025 production results from its Mercedes mine in Sonora. ON FINANCING, Vizsla Silver announced that after it completed bought deal offering of 33,334,000 common shares at a price of USD $3 per share, the underwriters have purchased an additional 5,000,100 common shares for gross proceeds of USD $15,000,300 (Panuco project, Sinaloa). Pinnacle arranged a non-brokered private placement for gross proceeds of USD $1.2M (El Potrero project, Durango). Sierra Madre entered into a best offer private placement for gross proceeds of up to USD $10M, which later on it upsized of up to USD $16.5M (La Guitarra mine, Estado de Mexico). Southern Silver announced bought deal LIFE private placement for gross proceeds of CAD $8M, the same that later on it upsized to CAD $13M (Cerro Las Minitas project, Durango). Mammoth upsized its previously announced non-brokered private placement to up to CAD $980K (Tenoriba project, Chihuahua). Roberto Resources announced a non-brokered private placement for gross proceeds of CAD $1M (Claudia project, Durango). Aura Minerals published that it priced and closed its US initial public offering of 8,100,510 common shares at a price of USD $24.25 per share (Aranzazu mine, Zacatecas). Colibri announced that it intends to amend terms of outstanding debentures, warrants, and finder’s options issued in 2023 (Gran Pilar project, Sonora). Capitan Silver generated CAD $6.6M through the accelerated exercise of warrants (Cruz de Plata project, Durango). Garibaldi closed a non-brokered private placement for gross proceeds of CAD $1M (Tonichi project, Sonora). Goldgroup announced a non-brokered private placement for gross proceeds of up to 15,000,000 units at a price of CAD $0.80 per unit for gross proceeds of up to CAD $12M (Pinos project, Zacatecas). Prismo Metals upsized and closed its previously announced private placement for gross proceeds of CAD $575K (Palos Verdes project, Sinaloa). ON RESOURCES AND DEVELOPMENT, Starcore shared an update on its San Juan Nepomuceno or Tortilla project in Queretaro. Orla filed an updated NI 43-101 technical report on Camino Rojo mine in Zacatecas. Torex Gold reported drill results from its EPO deposit within the El Limon Guajes and Media Luna mine complex in Guerrero. ON DEALS AND CORPORATE ISSUES, Apollo Silver entered into an investor relations agreement with Matthews Investments (Cinco de Mayo project, Chihuahua). Vizsla Royalties announced its participation at the Emerging Growth Conference (Panuco project, Sinaloa). US Antimony provided an update on its antimony supply effort for its Madero smelter in Coahuila. GR Silver announced incentive plan grants to eligible persons in accordance with the Omnibus Long-Term Incentive Plan (Plomosas project, Sinaloa). Defiance Silver signed a definitive agreement to acquire all issued and outstanding common shares of Green Earth Metals (San Acacio project, Zacatecas). Almaden announces intention to migrate Canadian stock exchange listing from TSX to TSX Venture Exchange (Ixtaca project, Puebla). Candelaria Mining reported voting results from its annual general meeting of shareholders. Roberto Resources completed the acquisition of the Claudia project in Durango and announced change of its name to Pacific Silver. Pinnacle declared that it has engaged the services of an independent trading group to provide market-making services (Potrero project, Durango). Oroco entered into an option agreement to acquire a 100% interest in the Vainilla mineral concession located in the Choix mining district in Sinaloa. Starcore announced significant corporate developments (San Martin mine, Queretaro). Minera Alamos reported voting results from its annual general meeting of shareholders (Santana mine, Sonora). Almadex announced completion of gold loan repayment by Almaden (El Cobre project, Veracruz). ( ON SOCIAL RESPONSIBILITY, no relevant news.

ON MEXICO ISSUES

Torex Gold Resources Inc., and Minaurum Gold Inc., reported the best drilling intercepts in Mexico on the third week of July, 2025. Details are shown in the table below:

ON EXPLORATION

Silver Valley Metals Corp., re-initiated exploration at the Mexi-Can Potash-Lithium project in Zacatecas and San Luis Potosi. The company will be conducting metallurgical studies on potash extraction, focusing on the extraction of sulphate of potash from surface sediments across all salars within the project area; will undertake auger drilling to assess the depth and extents of sedimentary basins across the project´s salars; will initiate hydrological testing to gain a clear understanding of the geochemical and physical properties of near-surface brines across all salars; and will carry out a geophysical program to map subsurface structures and identify high-potential zones for deeper brine targets.
Minaurum Gold Inc., reported drill results from a new vein zone target at the Promontorio Sur within its Alamos project in Sonora. The 1.5 km-long vein zone is an unmined extension of a 3.5km long Promontorio-Quintera structural-grade vein system trend, with significant historical silver production nearby, which has produced over 70M Oz Ag at Promontorio mine and over 100M Oz Ag at La Quintera mine. Promontorio and Promontorio Sur also indicate a significant skarn/carbonate replacement (CRD) mineralization hosted by limestone in the footwall of the vein zones. The lead-zinc (gold) skarn/CRD event appears to have occurred later than the epithermal silver-copper mineralization and represents a large target. Drilling results are shown in the table below:

ON MINING

Altius Minerals Corporation reported Q2, 2025 expected attributable royalty revenue of CAD $12M (Llano de Nogal project, Sonora).
Bear Creek Mining Corporation reported Q2, 2025 production results from its Mercedes mine in Sonora. The company mined 91.945 tonnes and processed 89,488 tonnes of 2.88 g/t Au with a metallurgical recovery of 96% to produce 7,973 Oz Au and 33,932 Oz Ag.

ON FINANCING

Vizsla Silver Corp., announced that after it completed bought deal offering of 33,334,000 common shares at a price of USD $3 per share, the underwriters have purchased an additional 5,000,100 common shares for gross proceeds of USD $15,000,300. Gross proceeds will be used to advance the exploration and development of the Panuco project in Sinaloa, exploration of the Santa Fe project, which is adjacent to Panuco project, potential future acquisitions, as well as for working capital and general corporate purposes.
Pinnacle Silver and Gold Corp., arranged a non-brokered private placement of up to 20,000,000 units at a price of USD $0.06 per unit for gross proceeds of USD $1.2M. Net proceeds will be used to advance El Potrero project in Durango, and for general working capital.
Sierra Madre Gold and Silver Ltd., entered into a best offer private placement of up to 14,290,000 units at a price of USD $0.70 per unit for gross proceeds of up to USD $10M. Later on, the company upsized the previously announced private placement to up to 23,572,000 units at a price of usd $0.70 for gross proceeds of up to USD $16,500,400 Gross proceeds will be used to expand the capacity of the La Guitarra mine, Estado de Mexico, and for working capital and general corporate purposes.
Southern Silver Exploration Corp., announced bought deal LIFE private placement with a sole underwriter and bookrunner which has agreed to purchase for resale 29,629,630 units at a price of CAD $0.27 for gross proceeds of CAD $8M. Later on, Southern Silver upsized the previously announced bought deal private placement to 48,148,149 units at a price of CAD $0.27 for gross proceeds of CAD $13M. The company plans to use the net proceeds for the advancement of the Cerro Las Minitas project in Durango, as well as for working capital and general corporate purposes.
Mammoth Resources Corp., upsized its previously announced non-brokered private placement of up to 30,000,000 units at an offering price of CAD $0.025 per unit for gross proceeds of up to CAD $750K to up to 39,000,000 units for gross proceeds of up to CAD $980K. Gross proceeds will be used to advance the Tenoriba project in Chihuahua, to evaluate potential project acquisitions and support working capital needs.
Roberto Resources Inc., announced a non-brokered private placement of 2,500,000 units at a price of CAD $0.40 per unit for gross proceeds of CAD $1M. Gross proceeds will be used for general working capital and future payables related to the acquisition of the Claudia project in Durango.
Aura Minerals Inc., published that it priced and closed its US initial public offering of 8,100,510 common shares at a price of USD $24.25 per share. The principal purposes of this offering are to transfer Aura’s principal listing venue to a stock exchange in the US equity market, which the Company believes will increase the liquidity of its common shares, as well as strengthen and diversify its shareholder base through broader access to global capital markets. Aura plans to use the gross proceeds to continue strengthening its business, to provide incremental liquidity and financial flexibility to support the execution of its current strategic growth initiatives, to provide exploration initiatives to expand mineral reserves and resources of its portfolio, and for general corporate purposes (Aranzazu mine, Zacatecas).
Colibri Resource Corporation announced that it intends to amend terms of outstanding debentures, warrants, and finder’s options issued in 2023. The amendments include extending maturity dates for two years and reducing conversion/exercise prices from CAD $0.50 to CAD $0.25, with an alternative option to convert at CAD $0.15. The amendments include an accelerated expiry clause if the company’s stock price exceeds CAD $0.30 for ten consecutive days, and insider holdings are exempt from certain regulatory requirements. These changes aim to strengthen Colibri’s balance sheet and support its Pilar project development in Sonora.
Capitan Silver Corp., generated CAD $6.6M through the accelerated exercise of 13,250,000 warrants, with an exercise price of CAD $0.50 (Cruz de Plata project, Durango).
Garibaldi Resources Corp., closed a non-brokered private placement of 14,401,988 units at a price of CAD $0.07 per unit for gross proceeds of CAD $1M. Gross proceeds will be used for exploration and working capital purposes.
Goldgroup Mining Inc., announced a non-brokered private placement for gross proceeds of up to 15,000,000 units at a price of CAD $0.80 per unit for gross proceeds of up to CAD $12M. Net proceeds will be primarily dedicated to the diligent assessment and strategic pursuit of acquisition opportunities (Pinos project, Zacatecas).
Prismo Metals Inc., upsized and closed its previously announced private placement of 5,000,000 to 11,500,000 units at an issue price of CAD $0.05 per unit for gross proceeds of CAD $575K. Prismo intends to use the gross proceeds for general corporate purposes (Palos Verdes project, Sinaloa).

ON RESOURCES AND DEVELOPMENT

Starcore International Mines Ltd., shared an update on its San Juan Nepomuceno or Tortilla project in Queretaro. The project comprises six mineral claims covering a historical mine with exploration potential. During the due diligence process, Starcore conducted cyanidation tests on samples that averaged 2.15 g/t Au, 968 g/t Ag, 0.01% Cu, 0.4% Pb, and 0.1% Zn, showing gold and silver metallurgical recoveries of 79.85% and 84.75% respectively using the carbon-in-leach (CIL) process, demonstrating effective processing of the mineralized ore. The project with historical mining activity remains open at-depth with substantial lateral extension potential.
Orla Mining Ltd., filed an updated NI 43-101 technical report on Camino Rojo mine in Zacatecas to include the initial Underground Mineral Resource Estimate.
Torex Gold Resources Inc., reported drill results from its EPO deposit within the El Limon Guajes and Media Luna mine complex in Guerrero. “Drilling in the northern area of EPO to date in 2025 has been focused on the northern block of the west-northwest La Avispa fault, which controls a dike swarm of an estimated width of 150 to 200 m that represents a discontinuity between the main EPO mineralized zone to the south and its northern extension within the hanging wall of the fault. The current mineralization footprint in the north extends approximately 500 x 200 m with a west-northwest strike that has a significant vertical continuity ranging between 15 m to over 100 m between the interpreted boundaries of the favourable alteration zone that vertically extends for ~200 m. The lateral continuity of the mineralization is defined by the spacing between the dikes that varies from approximately 5 to 35 m, defining several mineralized blocks. Mineralization remains open to the north following the favourable alteration zone “. Drilling highlight are shown in the table below:

ON DEALS AND CORPORATE ISSUES

Apollo Silver Corp., entered into an investor relations agreement with Matthews Investments to provide Investor Relations services to the company. In consideration, Matthews will receive CAD $7K per month, payable monthly in arrears, for an initial term of three months, with the option for the Company to renew on a quarterly basis thereafter (Cinco de Mayo project, Chihuahua)
Vizsla Royalties Corp., announced its participation at the Emerging Growth Conference on July 16, 2025, a live interactive online event which will give existing shareholders and the investment community the opportunity to interact with the company´s President and CEO (Panuco project, Sinaloa).
US Antimony Corporation (USAC) provided an update on its antimony supply effort for its Madero smelter in Coahuila. Last March, 2024, USAC decided to stop their own mining operations in Mexico due to economic and regulatory challenges but continues to build strategic relationships with other companies seeking access to Mexican antimony deposits. Recently, USAC restarted the Madero Smelter in April 2025, following a substantial increase in antimony prices (over 500%). The company is actively negotiating new supplies and contracts, including a definitive agreement with Bolivian suppliers for initial shipments of approximately 10 tonnes, ramping up to 150 tonnes per month by early 2026. Additionally, USAC is exploring other potential sources in Mexico and attracting foreign interest, particularly from Chinese entities, amid limited new concessions from the Mexican government. USAC owns significant assets, including a flotation facility and the only operating smelter in Mexico, which provide strong negotiating leverage.
GR Silver Mining Ltd., announced incentive plan grants to eligible persons in accordance with the Omnibus Long-Term Incentive Plan. GR Silver granted an aggregate 3,837,205 Performance Share Units (PSU) to certain executive officers of the company (Plomosas project, Sinaloa).
Defiance Silver Corp., signed a definitive agreement to acquire all issued and outstanding common shares of Green Earth Metals Inc (GEMS). GEMS is a privately held company based on British Columbia with a portfolio of three copper-silver projects in Sonora. Defiance issued an aggregate of 4,954,613 common shares to the shareholders of GEMS at a deemed price of CAD $0.255 per Defiance share in exchange for all issued and outstanding GEMS shares, based on an exchange ratio of one Defiance share for every 4.52 GEMS shares, for a total consideration of CAD $1,263,426 (San Acacio project, Zacatecas).
Almaden Minerals Ltd., announces intention to migrate Canadian stock exchange listing from TSX to TSX Venture Exchange. In order to complete this migration, the company has applied to voluntarily delist its shares from the TSX, and has received conditional approval from the TSXV to list its shares as a Tier 2 Mining Issuer. Almaden expects the delisting from the TSX to occur at the close of business on August 12, and the listing on the TSXV to commence at the open of business on August 13, 2025 (Ixtaca project, Puebla).
Candelaria Mining Corp., reported voting results from its annual general meeting of shareholders.
Roberto Resources Inc., completed the acquisition of the Claudia project in Durango, pursuant to the binding letter agreement previously announced on June 30, 2025. Roberto Resources also announced that it changed its name to Pacifica Silver Corp., “to better reflect its overall business strategy to acquire and advance highly prospective precious metals projects in the Americas”. It also plans to change the symbol of its common shares to “PSIL”.
Pinnacle Silver and Gold Corp., declared that it has engaged the services of an independent trading group (ITG) to provide market-making services. Under the agreement, ITG will receive compensation of CAD $5K per month, payable monthly in advance. The agreement is for an initial term of one month and will renew for additional one-month terms unless terminated (Potrero project, Durango).
Oroco Resources Corp., entered into an option agreement through its wholly-owned Mexican subsidiary Minera Xochipala S.A. de C.V., to acquire a 100% interest in the Vainilla mineral concession which surrounds their Santo Tomas Project in Sinaloa by paying an initial USD $75K and 100,000 common shares to Aztec Zinc de Mexico S.A. de C.V., with semi-annual payments of USD $25K and 100,000 common shares thereafter. To exercise the option, Oroco must pay USD $500K and issue 2,000,000 shares. Upon completion, a 1.5% Net Smelter Returns royalty will be granted to third parties, and Xochipala will be responsible for concession duties during the option period. Vainilla covers about 2,974 hectares and hosts multiple mineralized zones, including skarns and breccia pipes, situated along a promising porphyry copper belt. The acquisition enhances Oroco’s control over the region, offering immediate exploration opportunities for copper and related metals, and complements their existing Santo Tomás project both geologically and strategically, supported by local government initiatives.
Starcore International Mines Ltd., announced significant corporate developments. On July 8, 2025, shareholders will receive one share of EU Gold Mining Inc. for every two shares of Starcore upon approval of the spin-out of exploration interests in Côte d’Ivoire. On July 10, 2025, Starcore secured a ten-year lease for San Juan Nepomuceno, a historical silver mine in Queretaro, gaining access to minerals and surrounding claims in a promising area. On July 14, 2025, the company confirmed its use of carbon-in-leach (CIL) processing technology at the San Martin mine in Queretaro, enhancing mineral recovery, aiming to increase shareholders value, as shown by recent metallurgical tests.
Silver Storm Mining Ltd., completed its acquisition of Till Capital through a court-approved plan of arrangement, resulting in Till shareholders receiving 16.36 Silver Storm units, with each unit comprising a common share, a warrant, and a contingent value rights (CVRs) tied to a potential sale of a stake in IG Far East LLC (the CVR contingent event). Silver Storm issued 52,211,558 unit shares, 13,052,890 warrants, and 52,211,558 CVRs to former Till shareholders, resulting in a new total of outstanding shares and warrants for Silver Storm. Following the deal, Silver Storm now holds a significantly expanded share structure, and Till’s previous directors and officers have resigned. This arrangement positions Silver Storm to potentially benefit from future asset sales and operational developments.
Minera Alamos Inc., reported voting results from its annual general meeting of shareholders (Santana mine, Sonora).
Almadex Minerals Ltd., announced completion of gold loan repayment by Almaden Minerals Ltd. The repayment involves the return to Almadex of 397 Oz Au plus the payment of USD $5,194,354 (El Cobre project, Veracruz).

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, large barite crystals in an intermediate sulphidation epithermal vein system in a project in Chihuahua, Mexico. Photo taken by Miguel A Heredia.

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

July 6, 2025 / gambusinoprospectormexico / Leave a comment

Quartz stockwork veining hosted in sediments

By Miguel A Heredia

During the 27^thweek of the year (June 30^thto 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 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.

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