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Guanajuato Silver Provides El Cubo Drill Results

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Guanajuato Silver (TSXV:GSVR / OTCQX:GSVRF) reported 2025 El Cubo drill results highlighting multiple high‑grade vein intercepts. Key hits include PAC25-03: 26.7 g/t Au + 321 g/t Ag = 2591 g/t AgEq over 0.42 m and SL25-10: 13.02 g/t Au + 970 g/t Ag = 2077 g/t AgEq over 0.18 m (Ag/Au = 85:1). San Luis, Dolores, Packman and Villalpando veins showed continuity and new vein discoveries; San Luis contributed >8,900 tonnes to 2025 production. Company lab performed assays; ~20% of samples were sent to ISO labs for validation and those independent results are pending.

Guanajuato Silver (TSXV:GSVR / OTCQX:GSVRF) ha riportato i risultati di trivellazione 2025 a El Cubo evidenziando multiple intercetti di vene ad alto grado. Colpi chiave includono PAC25-03: 26.7 g/t Au + 321 g/t Ag = 2591 g/t AgEq su 0.42 m e SL25-10: 13.02 g/t Au + 970 g/t Ag = 2077 g/t AgEq su 0.18 m (Ag/Au = 85:1). Le vene San Luis, Dolores, Packman e Villalpando hanno mostrato continuità e nuove scoperte di vene; San Luis ha contribuito >8.900 tonnellate alla produzione del 2025. Il laboratorio della società ha eseguito le analisi; circa 20% dei campioni sono stati inviati a laboratori ISO per convalida e tali risultati indipendenti sono in attesa.

Guanajuato Silver (TSXV:GSVR / OTCQX:GSVRF) informó resultados de perforación 2025 en El Cubo destacando múltiples interceptos de vetas de alta ley. Puntos clave incluyen PAC25-03: 26.7 g/t Au + 321 g/t Ag = 2591 g/t AgEq sobre 0.42 m y SL25-10: 13.02 g/t Au + 970 g/t Ag = 2077 g/t AgEq sobre 0.18 m (Ag/Au = 85:1). Venas de San Luis, Dolores, Packman y Villalpando mostraron continuidad y nuevos descubrimientos de vetas; San Luis aportó >8.900 toneladas a la producción de 2025. El laboratorio de la empresa realizó ensayos; aproximadamente 20% de las muestras se enviaron a laboratorios ISO para validación y esos resultados independientes están pendientes.

Guanajuato Silver (TSXV:GSVR / OTCQX:GSVRF)가 El Cubo의 2025년 시추 결과를 발표하며 고등급 광맥 intercept를 다수 확인했습니다. 주요 결과는 PAC25-03: 26.7 g/t Au + 321 g/t Ag = 2591 g/t AgEq를 0.42 m에, SL25-10: 13.02 g/t Au + 970 g/t Ag = 2077 g/t AgEq를 0.18 m에 각각 기록했고(Ag/Au = 85:1). San Luis, Dolores, Packman, Villalpando 광맥이 연속성을 보였고 새로운 광맥 발견도 있었습니다; San Luis가 2025년 생산에 >8,900톤을 기여했습니다. 회사의 실험실이 분석을 수행했으며 약 20%의 샘플이 ISO 실험실로 검증을 위해 발송되었고 해당 독립 결과는 대기 중입니다.

Guanajuato Silver (TSXV:GSVR / OTCQX:GSVRF) a publié les résultats de forage 2025 à El Cubo, mettant en évidence plusieurs intercepts de veines à haute teneur. Les points clés incluent PAC25-03: 26,7 g/t Au + 321 g/t Ag = 2591 g/t AgEq sur 0,42 m et SL25-10: 13,02 g/t Au + 970 g/t Ag = 2077 g/t AgEq sur 0,18 m (Ag/Au = 85:1). Les veines San Luis, Dolores, Packman et Villalpando ont montré une continuité et de nouvelles découvertes de veines; San Luis a contribué >8 900 tonnes à la production 2025. Le laboratoire de la société a effectué les analyses; environ 20% des échantillons ont été envoyés à des laboratoires ISO pour validation et ces résultats indépendants sont en attente.

Guanajuato Silver (TSXV:GSVR / OTCQX:GSVRF) meldete 2025er Bohrungen in El Cubo und hob mehrere hochgradige Venenabschnitte hervor. Zentrale Treffer sind PAC25-03: 26,7 g/t Au + 321 g/t Ag = 2591 g/t AgEq über 0,42 m und SL25-10: 13,02 g/t Au + 970 g/t Ag = 2077 g/t AgEq über 0,18 m (Ag/Au = 85:1). Die Adern San Luis, Dolores, Packman und Villalpando zeigten Kontinuität und neue Aderfunde; San Luis trug >8.900 Tonnen zur Produktion 2025 bei. Das Firmennachweislabor führte Analysen durch; ca. 20% der Proben wurden zur Validierung an ISO-Labore geschickt, und diese unabhängigen Ergebnisse stehen noch aus.

Guanajuato Silver (TSXV:GSVR / OTCQX:GSVRF) أُعلن عن نتائج حفر 2025 في El Cubo مع أبرز اكتشافات متعددة للأفلام عالية الدرجة. النقاط الرئيسية تشمل PAC25-03: 26.7 g/t Au + 321 g/t Ag = 2591 g/t AgEq على 0.42 م و SL25-10: 13.02 g/t Au + 970 g/t Ag = 2077 g/t AgEq على 0.18 م (النسبة Ag/Au = 85:1). عُرين San Luis وDolores وPackman وVillalpando أظهرت استمرارية و discoveries جديدة للعيون؛ ساهمت San Luis بـ >8,900 طن في إنتاج 2025. مختبر الشركة قام بالتحاليل؛ نحو 20% من العينات أُرسلت إلى مختبرات ISO للتحقق وهذه النتائج المستقلة قيد الانتظار.

Guanajuato Silver (TSXV:GSVR / OTCQX:GSVRF) 报告了 El Cubo 的 2025 年钻探结果,突出显示多处高品位脉体截获。关键结果包括 PAC25-03: 26.7 g/t Au + 321 g/t Ag = 2591 g/t AgEq,范围0.42 m,以及 SL25-10: 13.02 g/t Au + 970 g/t Ag = 2077 g/t AgEq,范围0.18 m(Ag/Au = 85:1)。San Luis、Dolores、Packman 和 Villalpando 脉体显示出连续性并有新脉发现;San Luis 为 2025 年产量贡献 >8,900 吨。公司实验室完成分析;约 20% 的样品被送往 ISO 实验室进行验证,独立结果尚待披露。

Positive
  • PAC25-03 bonanza: 2591 g/t AgEq over 0.42 m
  • SL25-10 new vein: 2077 g/t AgEq over 0.18 m
  • San Luis contributed 8,900 tonnes to 2025 production
Negative
  • Reported intercept widths (0.18–0.72 m) below company minimum mining width of 0.80 m
  • Analytical work performed in a company‑owned laboratory (not independent)
  • Independent validation assays (~20% of samples) remain pending

~ Intercepts 26.7 g/t Au and 321 g/t Ag for 2591 g/t AgEq* over 0.42 metres ~

VANCOUVER, BC, BC / ACCESS Newswire / October 16, 2025 / Guanajuato Silver Company Ltd. (the "Company" or "GSilver") (TSXV:GSVR)(OTCQX:GSVRF), a growing Mexican-based precious metals producer, is pleased to provide an update on the 2025 exploration and development drilling program at the Company's wholly owned El Cubo Mines Complex ("El Cubo") located in Guanajuato, Mexico.

Highlights

  • Grades of over two kilograms per tonne silver-equivalent (AgEq) drilled at the Packman Vein in the Villalpando area near the Company's property boundary (PAC25-03: 26.7 g/t gold and 321 g/t silver for 2591 g/t AgEq* over 0.42 metres).

  • Another new vein discovery near the San Luis Vein also returned grades of over two kilograms per tonne silver-equivalent (SL25-10: 13.02 g/t gold and 970 g/t silver for 2077 g/t AgEq* over 0.18 metres).

Image 1: El Cubo 3-D View of Principal Veins

*All references in this news release to silver equivalent or AgEq have been calculated using 85:1 silver/gold (Ag/Au). For 2025, GSilver's minimum mining width is 0.80 metres, and the minimum mining cut-off grade is 150 g/t.

James Anderson, Chairman and CEO, said, "El Cubo has been producing high grade silver and gold for over 120 years; we are encouraged by the latest round of drill results and look forward to developing these zones. Of particular interest, drilling in the San Luis area has generated the potential for yet another new high-grade vein discovery; it is compelling discoveries like these that have defined the Guanajuato Silver Mining District for more than four centuries."

El Cubo Diamond Drill Results

San Luis Vein
The east to west trending San Luis Vein has quickly taken on significant importance at the El Cubo Mine. In 2025, San Luis has contributed over 8,900 tonnes of mineralized material to El Cubo's production profile, and the most recent drilling provides better certainty for future volume and grade prediction. Important intercepts include SL25-02 which returned 1.12 g/t gold and 330 g/t silver over 0.52 metres, and SL25-04 which returned 1.27 g/t gold and 248 g/t silver over 0.72 metres. The relatively higher gold content in the San Luis Vein will continue to make this area of the mine a primary focus for continued exploration and potential expansion.

Image 2: Long Section San Luis Vein

Dolores Vein
The Dolores Vein runs NNW, parallel to the Villalpando vein; together these two mineralized systems are the most prolific vein systems in the eastern half of the Guanajuato mining district. Drilling into the Dolores Vein via a single drillhole (DOL25-01) confirmed both the continuity of the mineralized system at depth and evidence of a lateral extension; DOL25-01 returned 0.60 g/t gold and 163 g/t silver over 0.69 metres. The Company will now focus on servicing and developing this area in advance of exploitation.

Packman Vein
The northwest-southeast running Packman Vein, which is interpreted as a loop extending from the Dolores Vein, represents a potentially new mining zone. The Packman Vein is located near to the San Luis Vein, and is characterized as a narrow structure with high gold and silver content; the system rests in close proximity to the Company's property boundary with Fresnillo PLC, the world's largest silver producer. Notable intercepts include PAC25-01 which returned 1.8 g/t gold and 161 g/t silver over 1.05 metres and PAC25-03 which returned a bonanza grade of 26.7 g/t gold and 321 g/t silver over 0.42 metres.

Drilling through the Packman Vein has also discovered the presence of two additional new veins. One of these veins sits in proximity to the Dolores system; this new vein was encountered through the drilling of the footwall structures of the San Luis and Packman veins; all four of the drillholes into the Packman Vein encountered this new structure with the most notable intercept being PAC25-04 which returned 0.62 g/t gold and 381 g/t silver over 0.48 metres. A second and more distant new vein structure was discovered through drilling at San Luis; SL25-10 returned 13.02 g/t gold and 970 g/t silver for 2077 g/t AgEq over 0.18 metres. This new area holds potential for additional expansion and the Company intends it to be the focus of additional future drilling this year.

Villalpando Vein
Three drillholes in Villalpando have returned intercepts that confirm mineralized structures and will provide the basis for advancing development at levels six and seven. The most notable intercept was VPO25-04 which returned 4.79 g/t gold and 15 g/t silver over 0.48 metres. The Villalpando Vein and associated loops are currently the primary source of new mineralized material being processed at El Cubo.

Drillhole Information

Sampling and quality assurance/quality control
Guanajuato Silver adheres to thorough QA/QC procedures and practices that exceed standard regulatory requirements when managing the Company's testing and sampling. Drill core was first reviewed by a Company geologist, who identified and marked intervals for sampling. The marked sample intervals were then cut in half with a diamond saw; half of the core was left in the core box and the other half was removed, placed in plastic bags, sealed and labeled. Intervals and unique sample numbers are recorded on the drill logs and the samples are sequenced with standards and blanks inserted according to a predefined QA/QC procedure. The samples are maintained under security on site until they are shipped to the analytical lab. The analytical work reported on herein was performed by Guanajuato Silver's local laboratory, located at the Valenciana Mines Complex at Ex-Hacienda de Bustos in Guanajuato City. This laboratory is owned and operated by the Company and is not independent. To validate the Company's assay results and preparation procedures, GSilver customarily sends additional random samples representing approximately 20% of all analytical samples to one of two ISO certified labs: Quimico Platinum, located at Silao, Guanajuato or Bureau Veritas located in Hermosillo, Sonora, Mexico. Both laboratories are certified at the ISO/IEC (International Organization for Standardization/International Electrotechnical Commission) geo-analytical laboratory and are independent of GSilver and its "qualified person". Core samples were subject to crushing at a minimum of 70% passing two millimeters, followed by pulverizing of a 250-gram split to 85% passing 75 microns. Gold determination was via standard atomic absorption (AA) finish 30-gram fire assay (FA) analysis, in addition to silver and 34-element analysis using fire assay and gravimetry termination. Following industry-standard procedures, blank and standard samples were inserted into the sample sequence and sent to the laboratory for analysis. Data verification of the analytical results included a statistical analysis of the standards and blanks that must pass certain parameters for acceptance to ensure accurate and verifiable results. As of the date of this press release, the Company has not yet received the results of the random samples sent to the independent laboratory.

Qualified Person
William Gehlen, a Director of Guanajuato Silver, is a Certified Professional Geologist with the American Institute of Professional Geologists (No. 10626), and a Qualified Person as defined by National Instrument 43-101, Standards of Disclosure for Mineral Projects.

Mr. Gehlen has reviewed and verified technical data disclosed in this news release and has not detected any significant QA/QC issues during review of the data and is not aware of any sampling, recovery or other factors that could materially affect the accuracy or reliability of the drilling data referred to herein. The verification of data underlying the disclosed information includes reviewing compiled assay data; QA-QC performance of blank samples, duplicates and certified reference materials; and grade calculation formulas.

About Guanajuato Silver
GSilver is a precious metals producer engaged in reactivating past producing silver and gold mines in central Mexico. The Company produces silver and gold concentrates from the El Cubo Mine, Valenciana Mines Complex, and the San Ignacio Mine; all three mines are located within the state of Guanajuato, which has an established 480-year mining history. Additionally, the Company produces silver, gold, lead, and zinc concentrates from the Topia mine in northwestern Durango. With four operating mines and three processing facilities, Guanajuato Silver is one of the fastest growing silver producers in Mexico.

ON BEHALF OF THE BOARD OF DIRECTORS

"James Anderson"
Chairman and CEO

For further information regarding Guanajuato Silver Company Ltd., please contact:

JJ Jennex, Gerente de Comunicaciones, T: 604 723 1433
E: jjj@GSilver.com
GSilver.com

Guanajuato Silver Bullion Store
Please visit our Bullion Store, where Guanajuato Silver coins and bars can be purchased.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

Forward-Looking Statements
This news release contains certain forward-looking statements and information, which relate to future events or future performance including, but not limited to, GSilver's growth, the interpretation of drill results, the potential for yet another new high-grade vein discovery, future volume and grade prediction, future focus areas for exploration, development and production, expansion, planned future drilling and GSilver's status as one of the fasting growing silver mining Company in Mexico.

Such forward-looking statements and information reflect management's current beliefs and are based on information currently available to and assumptions made by the Company; which assumptions, while considered reasonable by the Company, are inherently subject to significant operational, business, economic and regulatory uncertainties and contingencies. These assumptions include: the potential quantity, grade and metal content of the mineralized material at El Cubo and San Ignacio, the geotechnical and metallurgical characteristics of such material conforming to sampled results and metallurgical performance; available tonnage of mineralized material to be mined and processed; resource grades and recoveries; assumptions and discount rates being appropriately applied to production estimates; prices for silver, gold and other metals remaining as estimated; currency exchange rates remaining as estimated; availability of funds for the Company's projects and to satisfy current liabilities and obligations including debt repayments; capital, decommissioning and reclamation estimates; prices for energy inputs, labour, materials, supplies and services (including transportation) and inflation rates remaining as estimated; no labour-related disruptions; no unplanned delays or interruptions in scheduled construction and production; all necessary permits, licenses and regulatory approvals are received in a timely manner; and the ability to comply with environmental, health and safety laws. The foregoing list of assumptions is not exhaustive.

Readers are cautioned that such forward-looking statements and information are neither promises nor guarantees, and are subject to risks and uncertainties that may cause future results, level of activity, production levels, performance or achievements of GSilver to differ materially from those expected including, but not limited to, market conditions, availability of financing, currency rate fluctuations, high inflation and interest rates, geopolitical conflicts including wars, actual results of exploration, development and production activities, actual grades and recoveries of silver, gold and other metals from the Company's existing mines including El Cubo, Pinguico, San Ignacio, VMC and Topia, availability of third party mineralized material for processing, unanticipated geological or structural formations and characteristics, environmental risks, future prices of gold, silver and other metals, operating risks, accidents, labor issues, equipment or personnel delays, delays in obtaining governmental or regulatory approvals and permits, inadequate insurance, and other risks in the mining industry. There are no assurances that GSilver will be able to continue to increase production, tonnage milled and recoveries rates, improve grades and reduce costs at El Cubo, Pinguico, San Ignacio, VMC and/or Topia to process mineralized materials to produce silver, gold and other concentrates in the amounts, grades, recoveries, costs and timetable anticipated. In addition, GSilver's decision to process mineralized material from El Cubo, Pinguico, San Ignacio, VMC and Topia is not based on a feasibility study of mineral reserves demonstrating economic and technical viability and therefore is subject to increased uncertainty and risk of failure, both economically and technically. Mineral resources and mineralized material that are not Mineral Reserves do not have demonstrated economic viability, are considered too speculative geologically to have the economic considerations applied to them, and may be materially affected by environmental, permitting, legal, title, socio-political, marketing, and other relevant issues. There are no assurances that the Company's projected grades of gold and silver at El Cubo and San Ignacio and the anticipated level of production therefrom will be realized. In addition, there are no assurances that the Company will meet its production forecasts or generate the anticipated cash flows from operations to satisfy its scheduled debt payments or other liabilities when due or meet financial covenants to which the Company is subject or to fund its exploration programs and corporate initiatives as planned. There is also uncertainty about impact of any future global pandemic, ongoing global conflicts, elevated inflation and interest rates and the impact they will have on the Company's operations, supply chains, ability to access mining projects or procure equipment, contractors and other personnel on a timely basis or at all and economic activity in general. Accordingly, readers should not place undue reliance on forward-looking statements or information. All forward-looking statements and information made in this news release are qualified by these cautionary statements and those in our continuous disclosure filings available on SEDAR+ at www.sedarplus.ca including the Company's most recently filed annual information form. These forward-looking statements and information are made as of the date hereof and the Company does not assume any obligation to update or revise them to reflect new events or circumstances save as required by law.

SOURCE: Guanajuato Silver Company Ltd.



View the original press release on ACCESS Newswire

FAQ

What were Guanajuato Silver's highest El Cubo drill results reported on October 16, 2025 (GSVRF)?

Top reported intercepts were PAC25-03: 26.7 g/t Au + 321 g/t Ag (2591 g/t AgEq) over 0.42 m and SL25-10: 13.02 g/t Au + 970 g/t Ag (2077 g/t AgEq) over 0.18 m.

How does Guanajuato Silver calculate AgEq in the October 16, 2025 El Cubo release (GSVRF)?

AgEq values were calculated using an 85:1 silver-to-gold ratio (Ag/Au).

Did the October 2025 El Cubo assays use an independent laboratory for Guanajuato Silver (GSVRF)?

Analytical work was done in a company‑owned lab; approximately 20% of samples were sent to ISO labs for independent validation and results are pending.

Are the reported El Cubo drill widths immediately minable for Guanajuato Silver (GSVRF)?

Many reported intercepts are below the company's minimum mining width of 0.80 metres, so further evaluation and development are required.

What veins at El Cubo were highlighted in the October 16, 2025 update for GSVRF?

The release highlighted the San Luis, Dolores, Packman and Villalpando veins and noted two new vein discoveries near Packman and San Luis.

How much material did San Luis contribute to El Cubo production in 2025 according to Guanajuato Silver (GSVRF)?

San Luis contributed over 8,900 tonnes of mineralized material to El Cubo's 2025 production profile.
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