NI 43-101 Technical Report

The Mining and Exploration News in Mexico: Highlights on the First Week of November, 2026

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Boxwork Texture in a Quartz Vein

By Miguel A Heredia

During the 43th week of the year (November 02 to November 08, 2026), at least 21 press releases were issued by companies operating in Mexico. Of these, six related to deals and corporate matters, six reported production results, four covered resource and development updates, four presented exploration results, and one announced financial activities. ON MEXICO ISSUES, No relevant news. ON EXPLORATION, In Sonora, Riverside and its JV partner Questcorp announced that they are preparing the Phase 2B exploration drill program at La Union project.  In Sinaloa, Chesapeake reported that it has mobilized a 5,000m in-fill and expansion drill program to test the multiple targets identified recently at its Lucy project, and Mercado Minerals announced the commencement of an inaugural 1,500m drill program at its Zamora project. ON MINING, Elemental Royalty announced that it will release its Q3, 2026 results on November 10, 2026. Avino, Pan American Silver, Torex Resources, First Majestic, and Aura Minerals reported Q3, 2026 operational and financial results. ON FINANCING, Aura Minerals declared Q3, 2026 dividend. ON RESOURCES AND DEVELOPMENT, Sierra Madre commenced a 30,000m drilling program in the east district of the Guitarra mine complex in the State of Mexico. Minaurum Silver completed its 50,000m resource-expansion drill program at its Alamos Silver project in Sonora. Silverco filed on SEDAR a NI 43-101 Technical Report for la Negra project PEA. Goldgroup provided updates on technical studies, exploration and drilling programs for San Francisco and Cerro Prieto properties in Sonora, and Don David property in Oaxaca. ON DEALS AND CORPORATE ISSUES, Canuc announced that it amended its articles to grant its board of directors the right to consolidate the Company’s issued and outstanding common shares on a one-time basis, at a ratio of up to ten existing common shares for one new common share. Goldgroup reported that it has been included in the Solactive Global Silver Miners Index effective at the opening of trading on November 2, 2026. Pan American acquired ownership of 6,250,000 common shares of Galleon Gold Corp. Pantera Silver announced resumption of trading on the TSX Venture Exchange. Teck released its North America Truth and Reconciliation Action Plan. Silver Storm reported that it will present at the 2026 Precious Metals Summit Zurich Conference. ON SOCIAL RESPONSIBILITY, No relevant news.

ON MEXICO ISSUE

  • No relevant news

ON EXPLORATION

ON MINING

ON FINANCING

  • Aura Declares Dividend of US$0.72 Per Share and US$0.24 Per BDR Based on Q3 2026 Results, Resulting in a Dividend Yield of 4.0%¹ in the LTM: Aura Minerals Inc 1

ON RESOURCES AND DEVELOPMENT

  • Sierra Madre Commences 30,000 Metre Drill Program in the East District of La Guitarra: Sierra Madre Gold and Silver Ltd
  • Minaurum Completes 50,000-Metre Resource-Expansion Drill Program  at the Alamos Silver Project, Drills More High-Grade Silver:  751 g/t AgEq over 2.80 m at Africa, 385 g/t AgEq over 5.30 m at Quintera,  and 238 g/t AgEq over 12.20 m at Promontorio Sur: Minaurum Silver Inc
  • Silverco Mining Files NI 43-101 Technical Report for the La Negra Project PEA: Silverco Mining Ltd
  • Goldgroup Provides Updates on Technical Studies, Exploration and Drilling Programs: Goldgroup Mining Inc

ON DEALS AND CORPORATE ISSUES

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, a quartz vein showing boxworks in a project in Chihuahua, Mexico. Photo taken by Miguel A Heredia.

The Mining and Exploration News in Mexico: Highlights on the Fourth Week of October, 2026

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Slickensides in brecciated and silicified volcanic rocks

By Miguel A Heredia

During the 43th week of the year (October 19 to October 25, 2026), at least 26 press releases were issued by companies operating in Mexico, and 1 news published by the media. Of these, ten related to deals and corporate matters, five reported production results, five covered resource and development updates, three addressed Mexican-related issues, three presented exploration results, and one announced financial activities. ON MEXICO ISSUES, PROFECA reported mining spill In Mina Sabinas, Zacatecas and temporarily closes part of a Peñoles storage facility. Heliostar Metals, Minaurum Silver, Axo Metals and Capitan Silver reported the best drilling intercepts in Mexico on the fourth week of October, 2026. Gambusino Prospector reported the best Lead and Zinc drilling intercepts in Mexico on the Third Quarter 2026. ON EXPLORATION, In Sonora, Algo Grande engaged Addison Mining Services to update the NI 43-101 Technical Report on its Adelita project. In Chihuahua, Kingsmen contracted Geofísica TMC to fly drone-borne aeromagnetic and LiDAR surveys at Las Coloradas project, Chihuahua. In Sinaloa, Mercado Minerals reported new surface assay results from its Zamora project. ON MINING, Altius reported Q3, 2026 attributable royalty revenue of approximately CAD $33.2M. Americas Gold and Silver, Santacruz Mining and Fresnillo plc announced Q3, 2026 production and financial results. Americas Gold and Silver informed that it will host a conference call webcast on November 13, 2026 to discuss its Q3, 2026 results. ON FINANCING, Orex announced that it intends to amend the exercise price of an aggregate of 6,366,282 outstanding common share purchase warrants of the company. ON RESOURCES AND DEVELOPMENT, Silver Tiger provided a construction update for the El Tigre Stockwork Project in Sonora. Heliostar reports drill assay results from the High Grade Panel at its Ana Paula project, Guerrero.  Capitan Silver expanded high grade silver mineralization, and announced new CRD discovery at its Cruz de Plata project. Durango. Axo Metals released the latest drilling results from its San Antonio Gold project, Sonora. Minaurum reported the discovery of a blind high grade at its Alamos Silver project in Sonora. ON DEALS AND CORPORATE ISSUES, Torex appointed Lee Hodgkinson to its Board of Directors effective November 1, 2026. Antimony Resources announced that its 2026 annual general meeting will be held on Monday, 30 November 2026. Antimony Resources reported that its US subsidiary, Strategic Minerals, Inc., has been accepted into the US Defense Industrial Base Consortium. Riverside Resources optioned its Cecilia project in Sonora to Calu Resources Corp. Axo Metals received approval to trade on the OTCQB Venture Market. Pantera Silver announced completion of annual filings and revocation of cease of trade order. Silver Storm informed on its participation on the 2026 New Orleans Investment Conference. Aloro received extension for holding its 2026 annual general meeting. Kootenay appointed Mark Smith as Technical Advisor for La Cigarra project, Chihuahua. Starcore announced voting results of its annual general meeting of shareholders. ON SOCIAL RESPONSIBILITY, No relevant news.

ON MEXICO ISSUE

ON EXPLORATION

  • Algo Grande Commissions Independent NI 43-101 Update to Capture First Year of Progress at Adelita: Algo Grande Copper Corp
  • Kingsmen Contracts Drone Magnetic and LiDAR Surveys to Trace High-Grade Structural Intersections at Las Coloradas: Kingsmen Resources Ltd
  • Mercado Minerals Announces New Surface Results from the Zamora Project Including0.40 Metres of 1615 g/t Silver and 1.77 g/t Gold at the Campanillas – La Franca Vein & 1075 g/t Silver and 1.14 g/t Gold at the El Triunfo Vein: Mercado Minerals Ltd

ON MINING

ON FINANCING

ON RESOURCES AND DEVELOPMENT

  • Silver Tiger El Tigre Construction Update: Silver Tiger Metals Inc
  • Heliostar Reports 52.4m Grading 5.84 g/t Gold from the High Grade Panel and Continues to Build Out the Expansion Zone at Ana Paula: Heliostar Metals Ltd
    Capitan Expands High-Grade Silver Mineralization to 600 Metres Down-Dip and Announces New CRD Discovery at Cruz De Plata: Capitan Silver Corp
  • Axo Metals Drilling Intercepts 48.0 Metres of 1.18 G/T AU From Surface at Recently Discovered Luz del Cobre Target; Additional Results Include 3.94 G/T AU Over 15.0 Metres: Axo Metals Corp
  • Minaurum Discovers Blind Silver Vein Grading 669 g/t AgEq Over 2.05 Metres, Highlighting Potential for Additional Blind Veins of Scale;  Resource Expansion Drilling Returns 367 g/t AgEq Over 2.65 Metres at Europa Sur at the Alamos Silver Project: Minaurum Silver Inc

ON DEALS AND CORPORATE ISSUES

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, slickensides in brecciated and silicified volcanic rocks in a project in Chihuahua, Mexico. Photo taken by Miguel A Heredia.

The Mining and Exploration News in Mexico: Highlights on the Fourth Week of August, 2026

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Hydrothermal Breccia

The Mining and Exploration News in Mexico: Highlights on the Fourth Week of August, 2026

By Miguel A Heredia

During the 35th week of the year (August 24 to August 30, 2026), at least 25 press releases were issued by companies operating in Mexico. Of these, six reported production results, six related to deals and corporate matters, six covered resource and development updates, six announced financing activities, and one presented exploration results. ON MEXICO ISSUES, No relevant news. ON EXPLORATION, In Sonora, Tocvan reported new surface exploration results from a target located 4km north of the main Zone at its Gran Pilar project.    ON MINING, Orogen, Sailfish, Guanajuato Silver, Sierra Madre reported Q2, 2026 results. Silverco filed Q2, 2026 financial statements and MD & A and provided corporate update. Heliostar commenced the open pit mining at the Veta Madre in La Colorada mine, Sonora. ON FINANCING, Silver Storm increased the size of its previously announced non-brokered private placement from CAD $7.5M to CAD $15M. Silver Storm closed CAD $14.625M first tranche of non-brokered private placement and announced further upsize up to CAD $21M. Pinnacle extended the closing date of its previously announced non-brokered private placement to September 26, 2026. Algo Grande informed that it has upsized its previously announced non-brokered private placement from CAD $3M to up to CAD $5M. Alamos Gold declared quarterly dividend of USD $0.04 per common share. Centenario closed non-brokered private placement for gross proceeds of USD $1.5M.  ON RESOURCES AND DEVELOPMENT, Silverco Mining provided la Negra mine operations update. GoGold announces the formal commencement of site construction at Los Ricos South in Jalisco.  Minaurum reported drill results from the Europa, Quintera, and San Jose Vein zones as part of its ongoing Phase II, 50,000m resource-expansion drilling program at its Alamos Silver project in Sonora.  First Majestic filed NI43-101 Technical Report for the Los Gatos mine, Chihuahua. Mithril reported drill results from its Copalquin project, Durango.  Mammoth announced that it commenced field activities at its Tenoriba project, Chihuahua. ON DEALS AND CORPORATE ISSUES, Xali announced its participation at the upcoming Moody Capital Solution 2026 Disruptive Growth & Life Sciences Conference, taking place September 9–10, 2026, in New York City. Tocvan closed its purchase agreement with Colibri to acquire the remaining 49% interest in two original Pilar mining concessions, and now holds 100% ownership of its flagship Gran Pilar project in Sonora. Colibri completed the sale of 49% interest in the Pilar project in Sonora for CAD $3.6M plus 1% Net Smelting Royalty. Sonoro Gold acquired a 100% interest in 23 mineral concessions and up to 51% interest in five additional mineral concessions to further expand its Cerro Caliche project in Sonora. Mercado Minerals signed community agreement with Ejido Rincon de Ibonia at its Zamora project, Sinaloa.  Silver Viper announced the resignation of Arthur Freeze as Director of the company, effective August 23, 2026. ON SOCIAL RESPONSIBILITY, no relevant news.

ON MEXICO ISSUE

  • No relevant news

ON EXPLORATION  

  • Tocvan Announces New Surface Mineralization in Several Zones at Gran Pilar Gold-Silver Project: Tocvan Ventures Corp

ON MINING

ON FINANCING

ON RESOURCES AND DEVELOPMENT

  • Silverco Mining Provides La Negra Mine Operations Update: Silverco Mining Ltd
  • GoGold Commences Construction of the Fully-Funded Los Ricos South Mine: GoGold Resources Inc
  • Minaurum Significantly Expands Quintera Vein Zone with  26 m of 369 g/t AgEq and Europa Sur Returns 3.4 m of 589 g/t AgEq: Minaurum Silver Inc
  • First Majestic Files NI 43-101 Technical Report for the Los Gatos Silver Mine: First Majestic Silver Corp
  • Mithril Drills Wide, High-Grade Intercepts Confirming 550m Strike with First Systematic Drilling in the Copalquin-Zaragoza Structure at target 4: Mithril Silver and Gold Limited
  • Mammoth Begins Field Activities at its Tenoriba Gold-Silver Property, Mexico: Mammoth Resources Corp

ON DEALS AND CORPORATE ISSUES

  • Xali Gold to Present at the Moody Capital Solutions 2026 Conference: Xali Gold Corp
  • Tocvan Completes Acquisition of Remaining 49% Interest in Original Pilar Concessions, Consolidating 100% Ownership of Flagship Gran Pilar Gold-Silver Project: Tocvan Ventures Corp
  • Colibri Completes Sale of 49% Interest in Pilar for C$3.6 Million Plus 1% NSR: Colibri Resource Corporation
  • Sonoro Gold Completes Acquisition of 23 Mineral Concessions to Further Expand the Cerro Caliche Gold Project: Sonoro Gold Corp
  • Mercado Minerals Signs Community Access and Exploration Agreement with Local Ejido at the Zamora Project: Mercado Minerals Ltd
  • Silver Viper Announces Resignation of Director: Silver Viper Minerals Corp

ON SOCIAL RESPONSIBILITY

  • No relevant news.

Content like what you have just read can be seen at https://gambusinoprospector.com/ and at LinkedIn’s Mexico Mineral Exploration Group.

On the picture below, a hydrothermal breccia cemented by specularite in a Cu-Au project in Sonora Mexico. Photo taken by Miguel A Heredia.

The Mining and Exploration News in Mexico: Highlights on the Fourth Week of March, 2026

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By Miguel A Heredia

During the 13th week of the year (March 23 to March 29, 2026), at least 20 press releases were issued by companies operating in Mexico, along with one news article published by the media. Of these, eight related to deals and corporate matters, four reported production results, three covered resource updates and project development, three presented exploration results, two addressed Mexico-related issues, and one announced financing activities. ON MEXICO ISSUES, The Supreme Court of Justice of the nation (SCJN) upholds the reform to the Mining Law, which designates lithium as a strategic resource exclusive to the State and prohibits private concessions by dismissing challenges filed against it. Silver Viper reported the best drilling intercepts in Mexico on the fourth week of March, 2026. ON EXPLORATION, In Zacatecas, Zacatecas Silver received the drill permit from SEMARNAT for the El Cristo Vein System, to support its 2026 drilling program aimed at increasing existing silver resources at the Zacatecas Silver project, announced arrival of drill rig and drilling crew, and released assay results for 124 rock-chip samples from El Cristo Vein System. ON MINING, Torex Gold reported year-end 2025 reserves and resources for its flagship Morelos Complex in Guerrero, as well as for its Los Reyes project in Sinaloa. Orogen announced preliminary and unaudited financial results for Q4, and year ended December 31, 2025. EV Resources has announced its transition from exploration to near-term production at the Tecomatlán plant in Puebla, where refurbishment work on the grinding circuit has commenced. Osisko reported Q4 and year-end 2025 results, and informed that it sold its interest in the San Antonio Gold project in Sonora to Axo Copper Corp.  ON FINANCING, Coeur Mining Inc.,initiated a private exchange offer for holders of New Gold´s 6.875% senior notes due 2032. The exchange offer involves USD $400M in New Gold notes swapped for up to USD $400M in Coeur´s new notes plus cash. ON RESOURCES AND DEVELOPMENT, Silver Viper and Orex released drill results from its El Rubi-Virginia project in Sonora. Pan American reported the results of a revised Preliminary Assessment Evaluation (PEA) for its la Colorada mine in Zacatecas. ON DEALS AND CORPORATE ISSUES, Guanajuato Silver., appointed David Paxton to its Board of Directors, effective immediately, announced the filing of a NI 43-101 technical report for a new mineral resource estimate for its Valenciana Mine Complex in Guanajuato, and granted stock options to directors, officers, employees, and consultants. Silverco announced the appointments of George Paspalas as Advisor, Tara Hassan as Executive Vice President, and Victoria Avila as Senior Vice President Corporate Affairs, and Finance, and granted stock options and restricted share units to certain directors, officers, and advisors.  Sierra Madre reported that it has repaid USD $2.5M of the USD $5M non-revolving, secured term loan between First Majestic and the company. Capitan Silver announced that it will commence trading on the OTCQX market under symbol “CAPTF”. GR Silver informed the sudden passing of President, CEO, and Founder Márcio Fonseca. Alamos Gold filed its annual information form and 2025 annual report on Form-40, including its audited financial statement for the year ended December 31, 2025. GoGold announced annual results from its annual general meeting of shareholders. Regency Silver appointed Raj Chowdry and Frank Cordova to the Board of Directors, effective immediately, and thanked outgoing directors Michael G. Thomson and Patrick Elliott for their contributions to the Company. ON SOCIAL RESPONSIBILITY, No relevant news.

ON MEXICO ISSUES

  • The Supreme Court of Justice of the Nation (SCJN) upholds Mining Law Reform; Lithium Exploitation to Be Exclusive to the State: El Financiero
  • Silver Viper Minerals Inc, reported the best drilling intercepts in Mexico on the fourth week of March, 2026. Details are shown in the table below:

ON EXPLORATION

ON MINING

  • Torex Gold Reports Year-End 2025 Reserves & Resources: Torex Gold Resources Inc
  • Orogen Reports Record 2025 Financial Performance and Positions for Continued Growth in 2026: Orogen Royalties Inc
  • EV Resources Limited Fast Tracks First Mover Advantage in Antimony Production with Tecomatlán Plant Refurbishment Underway: EV Resources Limited 
  • Osisko Development Reported Fourth Quarter and Year-End 2025 Results:   Osisko Development Corp

ON FINANCING

  • Coeur Mining  announces Commencement of Exchange Offer and Consent Solicitation for New Gold Senior Notes: coeur mining inc 

ON RESOURCES AND DEVELOPMENT

  • Silver Viper hits 11.70 M @ 9.18 G/T Au And 352.0 G/T Ag Including 0.50 M @ 183.50 G/T Au And 6,850 G/T Ag While Infill Drilling At El Rubi And Expands The 5,000 M Drill Program At La Virginia Project In Sonora Mexico:  Silver Viper Minerals Inc
  • Orex Minerals Highlights Silver Viper’s High-Grade Drill Results at La Virginia, Sonora, Mexico: Orex Minerals Inc
  • Pan American Announces revised PEA for the La Colorada Skarn Project, Positioning La Colorada as a future Top-tier Silver Mine: Pan American Silver Corp

ON DEALS AND CORPORATE ISSUES

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, HQ core showing a hydrothermal breccia/ vein in an intermediate sulphidation epithermal system in Chihuahua, Mexico. Photo taken by Miguel A Heredia.