Locksley Resources Paves the Way for 100% Made in America Antimony Supply Chain

Locksley Resources Strengthens Position in U.S. Antimony Production

Locksley Resources Ltd., a key player in the antimony market, has made significant strides towards establishing a 100% American-made antimony supply chain. The company's recent metallurgical test results from the Mojave Project in California validate this ambition and highlight the potential for domestic production of this critical mineral.

On September 22, 2025, Locksley Resources reported exceptional results from metallurgical testing conducted on samples from the Desert Antimony Mine (DAM) Prospect. The findings confirmed that the Mojave Project can effectively deliver the necessary feedstock to support a mine-to-market supply chain for antimony in the United States. Antimony is recognized as a critical mineral by the U.S. government due to its importance in various industries, including electronics, automotive, and defense.

The six samples tested revealed impressive antimony grades, ranging from 27.5% to 39.1%, with recovery rates between 82.9% and 85.9%. Julian Woodcock, the Technical Director of Locksley Resources, praised the results as a crucial milestone, demonstrating that conventional flotation technology can successfully produce a stibnite concentrate from the Desert Antimony Mine Prospect. He expressed optimism for further improvements in the quality of the produced antimony concentrate through additional testing.

In a significant move towards refining this concentrate, Locksley Resources has sent samples to Rice University, where they will undergo Deep Eutectic Solvent Extraction testing. This collaboration with Rice University is focused on developing innovative processing techniques that will support Lockley’s goal of ensuring a reliable domestic supply of antimony.

Locksley Resources is not only committed to advancing the Mojave Project but is also focused on exploring critical minerals across its U.S. and Australian assets. The company's strategic partnership with Rice University aligns with its wider U.S. Critical Minerals and Energy Resilience Strategy, which aims to hasten the