EV Resources Announces Maiden Exploration Target for Los Lirios Antimony Project

EV Resources (ASX: EVR) has announced a maiden exploration target for its Los Lirios antimony project in Mexico, quantifying the scale of one of North America’s best strategically positioned antimony projects at a time of acute global supply constraint.

The target sits between 1.8 million tonnes and 5Mt for between 70,000 tonnes and 166,000t of contained metal across the discrete Lirios 1 and Lirios 2 (1.8% antimony) and Cofradia (6.7% antimony) zones.

The exploration target was established on the basis of geological interpretation integrating results from extensive channel sampling, a project-wide controlled-source audio-frequency magnetotellurics geophysical survey, and Phase 1 drilling of 15 holes.

The drilling was designed to test the extent and continuity of the CRD unit across the project area, providing the stratigraphic framework for subsequent resource-delineation drilling.

Drill orientations targeted CRD unit intersection rather than feeder structure intersections, which are expected to be the primary high-grade target for a Phase 2 campaign targeting a maiden mineral resource estimate before year end.

CRD-Style Intersection

Lirios 1 and Lirios 2 are representative of a stratigraphic carbonate replacement deposit (CRD) style unit resulting from the intersection of limestones folded along axial planes striking east-to-northeast at Lirios 1 and north-to-south at Lirios 2.

This structural configuration has produced high-grade, narrow zones in a broader, sub-horizontal zone within the limestones.

Cofradia comprises a zone of intense hydrothermal brecciation within the same limestone sequence, with assays from an historical adit into this breccia zone returning a channel sample of 2.2 metres @ 5.66% antimony.

Mineralisation across all three zones is characterised by variable percentages of cervantite and stibnite, with grades correlating to the proportion of stibnite and/or cervantite present.

‘Credible Scale’ Achieved

Managing director Mike Brown said the exploration target placed “credible scale” on what the company is building at Los Lirios.

“What excites us most is that our first-pass drilling aimed at testing the steep feeder structures instead revealed a stratabound CRD unit that is continuous, laterally-extensive, and very shallow—a very strong foundation and a significant achievement,” he said.

“Our planned Phase 2 program is designed to drill short, low-cost holes at the likely high-grade intersections where those feeders meet the CRD host and we are confident this will give us a highly capital-efficient pathway toward a maiden JORC resource.”

Los Lirios is one of very few advanced-stage antimony projects in North America, in a market defined by policy-driven supply tightness following China’s 2024 export controls and the absence of meaningful or near-term primary antimony production in the US.

“With antimony established as a critical mineral and Western supply under genuine pressure, we believe Los Lirios is emerging at exactly the right time,” Mr Brown added.