Zacatecas Silver Announces 21% Increase in High-Grade Heap-Leach Updated Gold Mineral Resource at the Esperanza Gold Project to 1.15 Moz AuEq from 45.4 Mt at 0.79 g/t – Grades Above Global Heap-Leach Average & Highest Grades at Surface

Resource growth is real, but economic upside remains unproven and years away.

What the company is saying

Zacatecas Silver Corp. is positioning itself as a growth-stage gold and silver developer, highlighting a substantial increase in the Mineral Resource Estimate at its Esperanza Gold Project. The company wants investors to focus on the 21% increase in Measured & Indicated (M&I) gold equivalent ounces and the 49% increase in M&I tonnes since December 2022, framing this as a major step forward. The announcement repeatedly emphasizes the potential for a 'low-capex, low-cost' open-pit heap-leach operation, suggesting that the project could be both scalable and economically attractive. Management uses confident, upbeat language, stressing that the updated resource grades compare favorably to global averages (though no source is provided for this comparison). The company also highlights that metallurgical recoveries are robust (75% gold, 25% silver) and that mineralization remains open at depth and along strike, implying further upside. However, the announcement buries the lack of any cost estimates, project timelines, or economic study results, and omits any discussion of financing, permitting, or development hurdles. The tone is optimistic and forward-looking, with management projecting confidence in the project's future but providing little in the way of concrete near-term deliverables. Notable individuals named include Eric Vanderleeuw (CEO), Chris Wilson (Chief Geologist), and Eugene Puritch (President of P&E Mining Consultants Inc.), but there is no mention of outside institutional investors or strategic partners. This narrative fits a classic junior mining IR playbook: emphasize resource growth, hint at future economics, and defer hard questions about development risk. There is no evidence of a shift in messaging, as no prior communications are available for comparison.

What the data suggests

The disclosed numbers show a clear and material increase in the project's resource base. The updated Measured & Indicated Mineral Resource is 45.4 million tonnes at 0.79 grams per tonne gold equivalent, containing 1.15 million ounces AuEq (1.11 million ounces gold and 12.37 million ounces silver). This represents a 21% increase in contained gold equivalent ounces and a 49% increase in tonnes versus the December 2022 estimate, which is a significant step up in scale. The Inferred Mineral Resource also grew to 11.2 million tonnes at 0.57 g/t AuEq, for 206,000 ounces AuEq, up 28% in tonnes. The Measured category, at 12.85 million tonnes grading 0.89 g/t Au, is the most robust and near-surface, suggesting a solid foundation for early-stage mining scenarios. Metallurgical testwork supports 75% gold and 25% silver recoveries via heap leach, and the resource is reported at a low cut-off grade of 0.13 g/t AuEq, indicating potential for low-cost extraction. The resource estimate is based on a substantial drill database (399 holes, nearly 70,000 meters), with a significant portion of historical samples re-assayed for quality control. However, the data stops short of providing any economic analysis: there are no cost estimates, no project NPV or IRR, and no timeline to production. Prior targets for resource growth have been met, but there is no evidence yet that the project can be developed economically. The financial disclosures are robust on the geological side but incomplete on the economic and operational fronts. An independent analyst would conclude that the resource growth is real and material, but the investment case remains speculative until a PEA or more advanced study is delivered.

Analysis

The announcement is upbeat, emphasizing a significant increase in Measured & Indicated and Inferred Mineral Resources at the Esperanza Gold Project, with detailed numerical support for these claims. The core of the disclosure—resource growth and grade—are factual and well-supported by the data provided. However, the narrative inflates the signal by repeatedly referencing the potential for a 'low-capex, low-cost' operation and the initiation of a PEA, which are forward-looking and not yet substantiated by economic studies or binding commitments. There is no disclosure of capital outlay, project timeline, or financing, and all economic benefits remain speculative until the PEA is completed. The gap between narrative and evidence is moderate: while the resource update is real, the implied project economics and development pathway are aspirational. The language is proportionate to the resource results but overreaches when discussing future project potential.

Risk flags

• ●Operational risk is high: The project is still at the resource definition stage, with no completed PEA, feasibility study, or construction decision. This means there is no visibility on whether the project can be built or operated profitably.
• ●Financial risk is significant: There is no disclosure of capital requirements, funding sources, or project economics. Investors face the risk that future studies could reveal high costs or marginal economics, requiring substantial equity dilution or debt.
• ●Disclosure risk is present: While the resource data is detailed, the company omits any discussion of project timelines, permitting, or financing, leaving investors in the dark about key development hurdles.
• ●Pattern-based risk: The announcement follows a classic junior mining playbook—emphasize resource growth, hint at low-cost development, but defer hard questions about execution. This pattern often precedes long periods of inactivity or disappointing economic studies.
• ●Timeline/execution risk: The majority of the company's claims are forward-looking, with value realization dependent on successful completion of multiple future milestones (PEA, permitting, financing, construction). Each step introduces new risks and potential delays.
• ●Geographic risk: The project is located in Mexico, which can present permitting, social, and security challenges that are not addressed in the announcement. Investors should be aware that jurisdictional risk is material in this region.
• ●Resource conversion risk: The company claims that Inferred resources could be upgraded with further drilling, but there is no guarantee that future work will confirm grade, continuity, or economic viability.
• ●Management risk: While the CEO and Chief Geologist are named, there is no mention of outside institutional investors or strategic partners, which may signal limited external validation or support at this stage.

Bottom line

For investors, this announcement means that Zacatecas Silver Corp. has materially increased the size and grade of its resource base at the Esperanza Gold Project, which is a necessary but not sufficient step toward value creation. The resource growth is real and well-supported by the disclosed drill data and grade breakdowns, but the leap from resource to economic project remains entirely unproven. There are no cost estimates, no project economics, and no timeline to production—only the initiation of a PEA, which is itself a preliminary and non-binding study. The absence of institutional investors or strategic partners in the announcement suggests that external validation is still lacking. To change this assessment, the company would need to deliver a completed PEA or feasibility study with robust economic metrics (NPV, IRR, capex, opex), clear timelines, and evidence of financing or permitting progress. Investors should watch for the results of the PEA, any updates on permitting or financing, and whether the company can attract credible partners or investors. At this stage, the signal is worth monitoring but not acting on: the resource growth is a positive data point, but the investment case is still speculative and long-dated. The single most important takeaway is that while the resource update is a real achievement, the path to monetization is unproven and will require multiple years and successful execution of several high-risk milestones.

Announcement summary

(TSXV: ZAC | OTCQB: ZCTSF) Zacatecas Silver Corp. announced an increase in the updated Mineral Resource Estimate at the Esperanza Gold Project, effective April 6, 2026. The updated Pit-Constrained Measured & Indicated Mineral Resource is 45.4 Mt @ 0.79 g/t AuEq (0.76 g/t gold and 8.5 g/t silver) for 1.15 Moz AuEq (1.11 million ounces gold and 12.37 million ounces silver), representing a 21% increase in M&I AuEq ounces and a 49% increase in M&I tonnes versus the December 2022 MRE. The Inferred Mineral Resource is 11.2 Mt @ 0.57 g/t AuEq (0.53 g/t gold and 11.2 g/t silver) for 206 koz AuEq (190 thousand ounces gold and 4.02 million ounces silver), with tonnes up 28% versus the prior MRE. The Measured Mineral Resource category is 12.85 Mt @ 0.89 g/t Au, representing the most densely drilled and near-surface material. Metallurgical work supports 75% gold and 25% silver recoveries via heap leach, with a low 0.13 g/t AuEq cut-off. The company projects that the PEA will aim to quantify a low-capex and lower-cost operation, with mineralization remaining open at depth and along strike.

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