Mineral Resource Estimate
The Mining and Exploration News in Mexico; Highlights on the Second Week of May 2026

By Jorge Cirett
During the 20th week of the year (May 11th to May 17th, 2026), companies working in Mexico released 39 press releases. Two companies informed on early-stage property work and ten companies presented quarterly reports. Two companies adopted semi-annual reporting, one company declared a dividend, one more repaid a loan, and one other closed a private placement while one more granted stock options. Three companies released drill results on their advanced projects, and one more updated the technical report on a property. Five companies announced appointments and officers changes, one company is acquiring more ground, two mid-tier companies announced their merger, one company reported its AGM results, and the acquisition of a royalty company was announced. ON MEXICO ISSUES, no relevant news. ON EXPLORATION, in Sonora, Tocvan Ventures reported continued drilling and exploration at Gran Pilar. In Chihuahua, Kingsmen Resources completed topographic surveys at Las Coloradas and Almoloya. ON MINING, Orla Mining, First Majestic, Altius Minerals, Heliostar Metals, Osisko Development, Elemental Royalty, Discovery Silver, Americas Gold and Silver, Avino Silver & Gold Mines, Santacruz Silver and Golden Minerals reported quarterly results. ON FINANCING Silver Viper and Regency Silver adopted semi-annual reporting. Coeur Mining reported a dividend. Heliostar Metals granted stock options. Guanajuato Silver repaid a gold loan. J2 Metals closed the second tranche of a private placement for C$356 K in gross proceeds. ON RESOURCES AND DEVELOPMENT, Goldgroup updated the technical report on the San Francisco mine in Sonora. Capitan Silver released results from drilling at Cruz de Plata in Durango. Defiance Silver announced drilling results from its Zacatecas project in Zacatecas. Mithril Silver and Gold provided assay results from drilling at the Target 1 of its Copalquin project in Durango. ON DEALS AND CORPORATE ISSUES, Oroco Resource, Minera Alamos, Vizsla Silver, Regency Silver and Goldgroup announced appointments to the board. Sonoro Gold signed a LOI on the acquisition of adjacent ground at Cerro Caliche, in Sonora. Equinox Gold and Orla Mining announced their merger. Altius Minerals presented results of its AGM. Elemental Royalty is to acquire Vizsla Royalties. Minera Alamos is to change name to Mining Americas. ON SOCIAL RESPONSIBILITY, No relevant news.
ON MEXICO ISSUES
- No relevant news
ON EXPLORATION
- Tocvan Accelerates Gran Pilar: 5,000+ Meters Drilled to Date, Historic Workings Discovered on South Block, Pilot Progresses: Tocvan Ventures (Gran Pilar, Sonora)
- Kingsmen Completes 60 km² Precision Satellite Topographic Surveys at Las Coloradas and Almoloya, Advancing Drill Targeting Across the High-Grade Parral Silver-Gold District, Chihuahua, Mexico: Kingsmen Resources (Las Coloradas, Chihuahua)
- Tocvan Announces New surface Gold-Silver Results, Outlining New Target 3 Kilometers East of Main Zone at Gran Pilar Gold-Silver Project: Tocvan Ventures (Gran Pilar, Sonora)
ON MINING
- Orla Mining Reports First Quarter 2026 Financial Results: Orla Mining (Camino Rojo, Zacatecas)
- First Majestic Announces Q1 2026 Financial Results and Increased Quarterly Dividend Payment; Provides Management Updates: First Majestic Silver (San Dimas, Sinaloa)
- Altius Reports Q1 2026 Attributable Royalty Revenue of $26.8M and Adjusted Earnings(1) of $5.4M: Altius Minerals (royalty on Cuale, Jalisco)
- Heliostar Presents Record Q1 2026 Financial and Operating Results: Heliostar Metals (Ana Paula, Guerrero)
- Osisko Development Reports First Quarter 2026 Results: Osisko Development (sold San Antonio, Sonora)
- Elemental Royalty Announces Record Quarterly Revenue and Adjusted EBITDA Elemental Royalty (royalty on Mercedes, Sonora)
- Discovery Silver Reports Solid Earnings and Cash Flow in Q1 2026: Discovery Silver (Cordero, Chihuahua)
- Americas Gold and Silver Reports Record Production and Sales in Q1 2026 as Execution on the Growth Plan Continues at Galena: Americas Gold and Silver (Cosalá, Sinaloa)
- Avino Delivers Record Q1 2026 Financial Results: Avino Silver & Gold Mines (Avino, Durango)
- Santacruz Silver Reports First Quarter 2026 Financial Results: Santacruz Silver (Zimapán, Hidalgo)
- Golden Minerals Reports First Quarter 2026 Financial Results: Golden Minerals (sold Velardeña, Durango)
ON FINANCING
- Silver Viper Announces Adoption of Semi-Annual Reporting: Silver Viper Minerals (Cerro Caliche, Sonora)
- Heliostar Grants Options and RSUs under its Omnibus Equity Incentive Compensation Plan: Heliostar Metals (Ana Paula, Guerrero)
- Coeur Declares Inaugural Dividend: Coeur Mining (Palmarejo, Chihuahua)
- Guanajuato Silver Accelerates Gold Loan Repayment: Guanajuato Silver (El Cubo, Guanajuato)
- J2 Metals Inc. Announces Closing of Flow-Through Private Placement: J2 Metals (Sierra Plata, Estado de México)
- Regency Silver Adopts Semi-Annual Reporting and Stock Option Grants: Regency Silver (Dios Padre, Sonora)
ON RESOURCES AND DEVELOPMENT
- Goldgroup Files Updated Technical Report on San Francisco Gold Project: Gold Group Mining (San Francisco, Sonora)
- Capitan Silver Intersects 935 g/t Silver Equivalent over 1.3 Metres, Within a Wider Zone of 157 g/t Silver Equivalent over 20.0 Metres at the Cruz De Plata Project: Capitan Mining (Cruz de Plata, Durango)
- Defiance Silver Drilling Returns up to 356 g/t Ag and 2.15 g/t Au in Additional Silver and Gold Structures: Defiance Silver (Zacatecas Project, Zacatecas)
- Mithril Drills 7.00 g/t Gold, 370 g/t Silver Over 9.65 m Including 30.7 g/t Gold, 1,780 g/t Silver Over 0.5 m at Target 1, Copalquin: Mithril Silver and Gold (Copalquín, Durango)
ON DEALS AND CORPORATE ISSUES
- Oroco Resource Corp. Appoints New CEO: Oroco Resource (Santo Tomás, Sinaloa)
- Minera Alamos Strengthens Board and Management Team and Proposes Name Change to Mining Americas Inc.: Minera Alamos (Santana, Sonora)
- Sonoro Gold Announces Letters of Intent to Acquire Adjacent Mineral Concessions to Further Expand the Cerro Caliche Gold Project: Sonoro Gold (Cerro Caliche, Sonora)
- Vizsla Silver Announces Change of Corporate Secretary: Vizsla Silver (Panuco, Sinaloa)
- Equinox Gold and Orla Mining Combine to Create North America’s New Senior Gold Producer: Built to Grow, Built to Last: Orla Mining (Camino Rojo)
- Equinox Gold and Orla Mining Combine to Create North America’s New Senior Gold Producer: Built to Grow, Built to Last: Equinox Gold (Los Filos, Guerrero)
- Altius Reports Voting Results From its May 13, 2026 Annual and Special Meeting: Altius Minerals (royalty on Cuale, Jalisco)
- Elemental Royalty to Acquire Vizsla Royalties, Securing Long-Life Royalty Exposure to the Panuco Silver-Gold Project: Elemental Royalty (royalty on Mercedes, Sonora)
- Vizsla Silver appoints Former Senior Mexican Government Mining Official as Vice President, Government Relations: Vizsla Silver (Panuco, Sinaloa)
- Regency Silver Corp. (TSXV: RSMX) Appoints Private Equity Fund Manager Alejandro Sucre to Board of Directors: Regency Silver (Dios Padre, Sonora)
- Goldgroup Announces Nominees to Board in Connection with Proposed Business Combination with Gold Resource Corporation and Amends Arrangement Agreement: Goldgroup Mining (Cerro Prieto, Sonora)
ON SOCIAL RESPONSIBILITY
- No Relevant News
On the image below: Epithermal quartz veining and pyrite in volcanosedimentary rocks, HQ core. Picture by Jorge Cirett.

MITHRIL DRILLS 7.00 G/T GOLD, 370 G/T SILVER OVER 9.65 M INCLUDING 30.7 G/T GOLD, 1,780 G/T SILVER OVER 0.5 M AT TARGET 1, COPALQUIN
Defiance Silver Drilling Returns up to 356 g/tAg and 2.15 g/t Au in Additional Silver and Gold Structures
GOLDGROUP FILES UPDATED TECHNICAL REPORT ON SAN FRANCISCO GOLD PROJECT
The Mining and Exploration News in Mexico; Highlights on the Fifth Week of April 2026

By Jorge Cirett
During the 18th week of the year (April 27th to May 3rd, 2026), companies working in Mexico released 26 press releases. One company informed on early-stage property work, nine companies presented quarterly and/or full-year reports. One company updated on a financing round, two more are to trade on additional markets and one informed on its reporting policies. Two companies released drill results on their advanced project/mine, one more presented a MRE and another one contracted mineral estimation services. One company signed a definitive agreement on an acquisition, two companies announced their AGM’s results, one a management update and one more the election of directors. ON MEXICO ISSUES, several mining unions made clear their repulsion to the law amendments that severely restricted their participations on companies’ earnings. ON EXPLORATION, in Sinaloa, Mercado Minerals released drilling results on Copalito. ON MINING, Gold Royalty, Orogen Royalties, Guanajuato Silver, Sierra Madre Gold and Silver, Capstone Copper, Alamos Gold, Agnico Eagle, Americas Gold and Silver and Minera Alamos reported quarterly and/or yearly results. ON FINANCING, Sonoro Gold closed a C$12.2 M private placement. Pinnacle Silver and Gold and Silver Viper started trading on different markets. Silver Spruce announced its reporting policies. ON RESOURCES AND DEVELOPMENT, Silver Storm released drilling results from La Parrilla, in Durango. Guanajuato silver filed the MRE on Bolañitos, Guanajuato. Luca Mining presented assays from drilling at Campo Morado, in Guerrero. Aztec Minerals engaged a service company to elaborate the MRE on Cervantes, Sonora. ON DEALS AND CORPORATE ISSUES, Silverco Mining executed the definitive agreement to acquire Nuevo Silver (La Negra, Querétaro). Chesapeake Gold is now a member of the Mining Association of Canada. Pan Amnerican Silver and Capstone Copper announced theirs AGM’s results. Agnico Eagle announced the election of directors. ON SOCIAL RESPONSIBILITY, First Majestic Silver announced its 2025 sustainability report.
ON MEXICO ISSUES
- Mineros denuncian “robo” por tope a utilidades: Conflict on mining workers revenue participations
- El líder sindical Carlos Pavón cuestiona tope al reparto de utilidades y anuncia acciones legales después de un año de precios históricos: Workers revenue participations on historic metal prices
- OIT notifica al gobierno de México que el Sindicato Minero Metalúrgico Frente interpuso queja: International complaint on workers revenue participations
ON EXPLORATION
- Mercado Minerals Intersects 6.50 Metres of 256 g/t Silver and 1.46 g/t Gold from 43.60 m Depth at 5 Senores Vein Copalito Project: Mercado Minerals (Copalito, Sinaloa)
ON MINING
- Gold Royalty Announces Record First Quarter 2026 Preliminary Results: Gold Royalty (Cozamin, Zacatecas)
- Orogen Royalties Reports Record Revenue and Strong Earnings Growth in 2025: Orogen Royalties (royalty on Ermitaño, Sonora)
- Guanajuato Silver Announces Year-End and Q4 2025 Results: Guanajuato Silver
- Sierra Madre Reports Q4 and Year-End 2025 Financial Results, Positive Operating Performance: Sierra Madre Gold and Silver (La Guitarra, Estado de México) The company sold 271.2 K Oz Ag, 4,041 Oz Au, or 628.2 K Oz AgEq during 2025.
- Capstone Copper Reports First Quarter 2026 Results: Capstone Copper (Cozamin, Zacatecas). The company produced 5,930 tonnes Cu at cash cost $0.71 per Lb Cu at Cozamin.
- Alamos Gold Reports First Quarter 2026 Results: Alamos Gold (Mulatos, Sonora). The company produced 32,700 Oz Au at cash cost $971 per Oz Au and mine-AISC of $995 per Oz Au at the Mulatos district.
- Agnico Eagle Reports First Quarter 2026 Results, Including Record Quarterly Operating Margins and Adjusted Net Income: Agnico Eagle Mines (Pinos Altos, Chihuahua)
- Americas Gold and Silver Provides Notice of First Quarter 2026 Results and Conference Call: Americas Gold and Silver (Cosalá, Sinaloa)
- Minera Alamos Reports Fourth Quarter and Full Year 2025 Results; Record Quarterly Revenue of C$43.6 Million and Record Earnings from Mine Operations of C$20.1 Million: Minera Alamos (Santana, Sonora)
ON FINANCING
- Sonoro Gold Announces Closing of Oversubscribed $12.2 Private Placement: Sonoro Gold (Cerro Caliche, Sonora)
- Pinnacle Commences Trading on OTCQB: Pinnacle Silver and Gold (Potrero, Durango)
- Silver Spruce Resources Inc. Announces Adoption of Quarterly Reporting Exemption Under Coordinated Blanket Order 51-933: Silver Spruce Resources (Pino de Plata, Chihuahua)
- Silver Viper Minerals Upgrades to OTCQX Best Market: Silver Viper Minerals (La Virginia, Sonora)
ON RESOURCES AND DEVELOPMENT
- Silver Storm Drills 473 g/t Ag.Eq Over 3.6 m and 137 g/t Ag.Eq Over 12.0 m, Extends the San Nicolás Zone at Depth: Silver Storm. (La Parrilla, Durango)
- Guanajuato Silver Files Technical Report for Bolañitos Mine: Guanajuato Silver (Bolañitos, Guanajuato) The deposit contains 22.2 M Oz AgEq, in all categories
- Luca intersects 118 Metres of 2.5 g/t Gold, 78.0 g/t Silver, 0.8% Copper, 0.6% Pb and 2.0% Zinc at Largo Norte Zone, Campo Morado Mine: Luca Mining (Campo Morado, Guerrero)
- Aztec Minerals Engages APEX Geoscience Ltd. to Commence Maiden Mineral Resource Estimates on the Tombstone and Cervantes Projects: Aztec Minerals (Cervantes, Sonora)
ON DEALS AND CORPORATE ISSUES
- Silverco Mining Executes Definitive Agreement for the Acquisition of Nuevo Silver: Silverco Mining: (Cusi, Chihuahua; La Negra, Querétaro)
- Chesapeake Announces Membership in the Mining Association of Canada; Management Update: Chesapeake Gold (Metates, Durango)
- Pan American Silver Announces Results of Annual General and Special Meeting: Pan American Silver (La Colorada, Zacatecas)
- Capstone Copper Announces 2026 Annual General Meeting Results: Capstone Copper (Cozamin, Zacatecas)
- Agnico Eagle Announces Election of Directors: Agnico Eagle Mines
ON SOCIAL RESPONSIBILITY
- First Majestic Announces 2025 Sustainability Report and Mailing of 2026 AGM Meeting Materials: First Majestic Silver (Santa Elena, Sonora)
On the image below: Epithermal quartz veining and pyrite in volcanosedimentary rocks, HQ core. Picture by Jorge Cirett.

Aztec Minerals Engages APEX Geoscience Ltd. to Commence Maiden Mineral Resource Estimates on the Tombstone and Cervantes Projects
Guanajuato Silver Files Technical Report for Bolanitos Mine
The Mining and Exploration News in Mexico; Highlights on the Third Week of April 2026

By Jorge Cirett
During the 16th week of the year (April 13th to April 19th, 2026), companies working in Mexico released 22 press releases. Six companies informed on early-stage property work on their projects, seven companies presented quarterly and/or full-year 2025 reports and one received a drill quote. Reflecting the global capital markets turmoil, only one company updated on a financing round. Two companies presented PEA reports on their properties, another one re-assayed historic drill core, one more released drill results on its advanced project and one more presented consolidated MRE’s. One company is to change its financial’s reporting and another one updated on legal issues. ON MEXICO ISSUES, no relevant news. ON EXPLORATION, in Sonora, Tocvan is accelerating trenching and mine works at Gran Pilar; Questcorp Mining quickens exploration at La Unión; Algo Grande Copper prepares for drilling at Adelita. In Chihuahua, Centenario Gold initiates work at Los Reyes. In Oaxaca, EV Resources defines antimony system at Los Lirios and continues to advance the project. ON MINING, Orla Mining, GoGold, Fuerte Metals, Impact Silver, Americas Gold and Silver, Santacruz Silver Mining and Fresnillo plc reported quarterly and/or yearly results. Mammoth Resources received a drill quote for Tenoriba, in Chihuahua. ON FINANCING, one company informed on a financing round. ON RESOURCES AND DEVELOPMENT, Silverco Mining released a PEA for the Cusi mine in Chihuahua. Mercado Minerals completed re-assaying of historic core at Copalito, in Sinaloa. Pacifica Silver reported drilling results from Claudia, in Durango. Sonora Gold updated the PEA on Cerro Caliche, in Sonora. Avino Silver & Gold announced consolidated MRE’s on La Preciosa and Avino, in Durango. ON DEALS AND CORPORATE ISSUES, Silver Dollar adopted semi-annual financial reporting. Silver Bull updated on its arbitration case against Mexico. ON SOCIAL RESPONSIBILITY, no relevant news.
ON MEXICO ISSUES
No Relevant News
ON EXPLORATION
- Tocvan Mobilizes heavy Equipment at Gran Pilar to accelerate trenching and mine works: Tocvan Ventures (Gran Pilar, Sonora).
- Questcorp Mining Accelerates Phase 2 Exploration at La Union Following New Gold Discovery: Questcorp Mining (La Unión, Sonora).
- Centenario Announces Initial Work Starting at the Los Reyes Copper Gold Project in Chihuahua, Mexico: Centenario Gold Los Reyes, Chihuahua).
- EV Resources Defines Large-Scale, Shallow CRD Antimony System at Los Lirios: EV Resources (Los Lirios, Oaxaca).
- Algo Grande Begins Earthworks in Preparation for Phase II Drill Program at Adelita and Announces Grant of Options and Restricted Share Units: Algo Grande Copper (Adelita, Sonora)
- Multiple Workstreams Advance EVR’s Antimony Hub Toward Near-Term Production: evresources (Los Lirios, Oaxaca).
ON MINING
- Orla Mining Reports First Quarter 2026 Gold Production: Orla Mining. Produced 18,221 Oz Au at Camino Rojo, in Zacatecas
- GoGold Announces Q2 2026 Parral Production: GoGold Resources (Parral, Chihuahua).
- Fuerte Files Annual 2025 Financial Results Fuerte Metals
- Impact Silver Announces Full Year 2025 Results with Record Revenue and Strong Cash Position: Impact Silver (Zacualpan, Estado de México; Plomosas, Chihuahua)
- Americas Gold and Silver Corporation Announces New Record Quarterly Silver Production and Sales, Including 787,000 Ounces Produced and 830,000 Ounces Sold: Americas Gold and Silver (Cosalá, Sinaloa).
- Santacruz Reports Q1 2026 Production of 1,341,499 Ounces of Silver and 21,640 Tonnes of Zinc, with Continued Recovery of Production at Bolivar Mine: Santacruz Silver Mining (Zimapán, Hidalgo).
- Mammoth Receives Updated Drill Quote Illustrating Low US$1.70 per Gold Equivalent Ounce Cost to Drill Initial 500,000 Ounce Exploration Target at its Tenoriba, Gold-Silver Property, Mexico: Mammoth Resources (Tenoriba, Chihuahua).
- Fresnillo plc – Annual Financial Report and Notice of AGM: Fresnillo plc (Fresnillo, Zacatecas; La Herradura, Sonora; San Julián, Chihuahua).
ON FINANCING
- Vortex Metals Announces Extension of Non-Brokered Private Placement: Vortex Metals (Riqueza Marina and Zaachila, Oaxaca)
ON RESOURCES AND DEVELOPMENT
- Silverco Mining Releases Robust PEA for the Cusi Mine Highlighting High-Margin, Low Capital Restart: Silverco Mining. Over 72.8 M Oz AgEq in M&I and inferred resources. (Cusi, Chihuahua).
- Mercado Minerals Completes Historic Drill Core Re-Sampling and Re-Assaying Program at the Copalito Project: Mercado Minerals (Copalito, Sinaloa).
- Pacifica Silver Reports Initial Phase II Drill Results at Claudia with Multiple High-Grade Intercepts at the Aguilareña Area: Pacifica Silver (Claudia, Durango).
- Sonoro Files Updated Preliminary Economic Assessment for the Cerro Caliche Project : Sonoro Gold (Cerro Caliche, Sonora).
- Avino Announces Inaugural Consolidated Mineral Reserves: Avino Silver & Gold Mines (Avino and La Preciosa, Durango).
ON DEALS AND CORPORATE ISSUES
- Silver Dollar Adopts Semi-Annual Financial Reporting: Silver Dollar Resources (La Joya, Durango).
- Silver Bull Provides Update on its Arbitration Case Against Mexico and Voting Results of the Annual Meeting of Shareholders: Silver Bull Resources (Sierra Mojada, Coahuila).
ON SOCIAL RESPONSIBILITY
- No Relevant News.
On the image below: Quartz veining, pyrite and specularite turning to hematite in volcanosedimentary rocks, HQ core. Picture by Jorge Cirett.
