Locksley Resources Strikes High-Grade Antimony Beneath Historical Desert Antimony Mine

Why It Matters

The drill results de‑risk Locksley’s antimony resource, potentially adding a high‑grade ore body that could meet growing demand for flame‑retardant and alloy applications. Simultaneously, the El Campo REE data bolster the company’s diversification into critical minerals essential for U.S. clean‑energy supply chains.

Key Takeaways

• Four meters intersected at 4.87% antimony, including 0.4m at 33.51%.
• Six of eight drill holes returned significant antimony mineralization.
• Results extend known vein structures 90 m below historic workings.
• El Campo REE prospect shows up to 12.1% TREO in chip samples.

Pulse Analysis

Antimony, a key component in flame‑retardants, aerospace alloys and lead‑free solders, has seen renewed interest as manufacturers seek non‑toxic alternatives. Locksley Resources’ recent drilling success in California delivers some of the highest grades reported in North America, with a 0.4‑metre interval exceeding 30% Sb. Such concentrations are rare and suggest a potentially economic deposit that could feed domestic supply chains, reducing reliance on imports from China, which dominates the global antimony market.

Beyond the headline grades, the drill program validates the company’s structural model, confirming that sub‑vertical quartz‑stibnite veins continue deep beneath the historic mine workings. By integrating these intercepts into a refined 3‑D geological model, Locksley can target future holes more precisely, focusing on down‑dip continuity and lateral extensions. The emphasis on structural controls and vein geometry will be critical for delineating a resource estimate that meets JORC standards, positioning the project for potential partnership or financing opportunities.

Locksley’s portfolio also includes the El Campo rare‑earths prospect, located just 1.4 km from the Mountain Pass mine, the only U.S. rare‑earth producer. Preliminary chip samples have returned up to 12.1% total rare‑earth oxides, indicating a sizeable REE envelope that could complement the antimony asset. As the United States accelerates its push for domestic critical minerals, the proximity of El Campo to existing infrastructure may accelerate development timelines, offering investors a dual‑play in both antimony and rare‑earth markets.