EV Resources Unveils High-Grade Antimony and Precious Metals at Los Lirios

Strong Metallurgical Performance at Los Lirios

EV Resources Limited (ASX, EVR) has released compelling metallurgical test results from its flagship Los Lirios Antimony Project in Oaxaca, Mexico. The composite samples returned a high head grade of 4.45% antimony, significantly exceeding typical global deposit grades. Alongside antimony, assays revealed the presence of gold and silver, positioning Los Lirios as a dual critical minerals and precious metals opportunity.

The mineralogy is favourable, with antimony primarily occurring as stibiconite and stibnite, both largely liberated, which supports efficient processing. Recovery rates are impressive, with downstream precipitation exceeding 98.7%, and gravity concentration tests achieving antimony concentrate grades between 17% and 37% with recoveries surpassing 70%. These results suggest a technically robust and economically viable project.

Economic and Strategic Implications

The discovery of gold and silver by-products adds significant value, providing multiple revenue streams and enhancing the project's economic resilience. EV Resources highlights the potential for fast-track production through gravity concentration at the nearby Tecomatlán Plant, allowing early concentrate sales while flotation and leaching circuits undergo permitting.

Strategically, Los Lirios aligns with U.S. critical minerals supply chain priorities, as antimony is identified as a priority mineral under supply chain security programs. This alignment could facilitate offtake and strategic partnerships, positioning EVR favourably in a market increasingly focused on securing critical mineral sources.

Next Steps and Outlook

EV Resources plans to advance flotation optimization to improve precious metals recovery, pilot-scale gravity processing at Tecomatlán, and finalize a detailed flowsheet incorporating both critical mineral and precious metal recoveries. Geological drilling and modelling are also slated to underpin a maiden JORC-compliant resource estimate.

Chief Operating Officer Miguel Barahona emphasised the project's dual value proposition and strategic importance, expressing confidence in delivering significant returns to shareholders. While the results are promising, the absence of drilling data means resource definition remains a critical next milestone.