Sun Silver Discovers High-Grade Antimony at Maverick Springs Project

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Sun Silver Ltd

  • ASX Code: SS1
  • Market Cap: $98,408,618
  • Shares On Issue (SOI): 145,478,226
  • Cash: $12,499,000 (as of 31 March 2025)
  • Maverick Springs Reveals Extensive Antimony Zones, Enhancing Critical Mineral Potential

    Sun Silver's Maverick Springs Project has unveiled significant antimony mineralization, with grades up to 1.7% Sb confirmed in re-assayed historical drill holes. The discovery highlights the project's expanding critical mineral footprint beyond its established silver-gold resource.

    Substantial Antimony Zones Confirmed Across Resource Area

    Sun Silver (ASX: SS1) has confirmed extensive antimony intercepts at its Maverick Springs Silver-Gold Project in Nevada, enhancing the site's multi-commodity potential. Historical hole MR065 returned impressive results of 66m at 0.12% Sb from 161m, including 23.7m at 0.23% Sb and a high-grade zone of 1.5m at 1.74% Sb.

    These grades are particularly significant when compared to Perpetua Resources Corp's Stibnite Project, which hosts average antimony grades of approximately 0.06%-0.07% Sb. The Maverick Springs antimony discovery shows grades nearly double this benchmark, positioning the project as a potentially important U.S. source of this critical mineral.

    "The presence of broad antimony zones highlights the growing significance of Maverick Springs as a potential U.S. source of this critical mineral," said Sun Silver Managing Director Andrew Dornan. "As we continue re-assaying historical drill core, our understanding of the scale and distribution of antimony within the broader silver-gold system is expanding with every result."

    Additional notable intercepts include:

    • MR069: 112.8m at 0.04% Sb from 125.6m, including 11m at 0.07% Sb
    • MR098: 40.5m at 0.04% Sb from 214.9m, including 4.6m at 0.10% Sb

    Expanding Critical Mineral Footprint

    The re-assay program is part of Sun Silver's broader strategy to unlock the full multi-commodity potential of the Maverick Springs Project. Approximately 30 historical holes have been submitted for multi-element assay, with results from an additional 25 holes expected throughout Q3 2025.

    Earlier work in 2024 had already identified antimony mineralization with values up to 1.32% across a 1.3km strike length. The current results further expand this footprint, with antimony mineralization now confirmed throughout multiple zones within the existing silver-gold resource area.

    What is Antimony and Why It Matters

    Antimony is classified as a critical mineral by the U.S. government due to its essential role in national security and economic applications, coupled with supply chain vulnerabilities. China currently dominates global production, controlling approximately 60% of the world's antimony supply.

    This strategic metal is crucial for:

    • Flame retardants: Used extensively in construction, automotive, and aerospace industries
    • Battery applications: Component in lead-acid batteries and other energy storage systems
    • Military uses: Essential for ammunition and night-vision equipment
    • Semiconductor production: Used in manufacturing of electronic components

    The antimony at Maverick Springs could represent an important domestic source for this strategic mineral, potentially reducing U.S. reliance on foreign imports.

    Strategic Asset in Premier Mining Jurisdiction

    The Maverick Springs Project is situated in Nevada, rated as the #1 mining jurisdiction in the world by the Fraser Institute in 2022. Located just 85km from the fully-serviced mining town of Elko, the project benefits from excellent infrastructure and proximity to several world-class mining operations, including Barrick's Carlin Mine.

    The project already hosts a substantial JORC Inferred Mineral Resource of 218Mt grading 42.2g/t Ag and 0.31g/t Au for 296.5Moz of contained silver and 2.2Moz of contained gold (480Moz of contained silver equivalent). The deposit remains open along strike and at depth, with the latest antimony results adding another dimension to the project's value proposition.

    Next Steps: Advancing Multi-Commodity Potential

    Sun Silver continues to advance its understanding of antimony mineralization across the Maverick Springs Project. The ongoing re-assay program of historical drill core and pulps is expected to deliver additional results throughout Q3 2025, potentially further expanding the known antimony footprint.

    The company's 2025 exploration program will likely incorporate targeted drilling to further define antimony zones and test for extensions of both antimony and silver-gold mineralization. With each new result, the Sun Silver Maverick Springs antimony discovery is increasingly positioning itself as not just a silver-gold project, but as a strategic multi-commodity asset in a premier mining jurisdiction.

    Why Investors Should Take Note

    Sun Silver's Maverick Springs offers a compelling investment case based on several key factors:

    1. Critical Mineral Exposure: The confirmed antimony mineralization provides exposure to a U.S. government-designated critical mineral with significant supply chain concerns.

    2. Multi-Commodity Potential: Beyond its established silver-gold resource, the project now demonstrates significant antimony potential, diversifying its commodity profile.

    3. Premier Location: Nevada's top-tier mining jurisdiction status provides regulatory certainty and access to established mining infrastructure.

    4. Scale Advantage: The existing silver-gold resource already demonstrates significant scale, with the antimony component potentially adding substantial additional value.

    5. Domestic Supply Opportunity: As the U.S. seeks to secure domestic supplies of critical minerals, the Sun Silver Maverick Springs antimony discovery could emerge as a strategically important project.

    With antimony grades exceeding those of comparable projects and a substantial existing precious metals resource, Sun Silver's Maverick Springs continues to demonstrate its potential as a significant multi-commodity asset in one of the world's premier mining jurisdictions.

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