Locksley expands Mojave antimony and REE targets

Confirmation of mineralised trends at Locksley’s Mojave project in the US is guiding targeting efforts and refining modelling to define exploration targets.

Further antimony and rare earth mineralisation trends have been confirmed at Locksley’s Mojave project. Pic: Getty Images

• Locksley Resources’ structural mapping at the Mojave project has expanded the antimony and rare earths prospects

• A new, expanded plan of operations at the Desert Antimony mine will be submitted to the BLM later this month

• Approval for the expanded drilling program is anticipated in early September

 

Special report: Multiple mineralised trends have been confirmed at Locksley Resources’ Mojave project in California, delivering critical insights to support drill targeting and the potential definition of JORC compliant exploration objectives for antimony and rare earths.

Locksley’s structural mapping program delivered on three key objectives: detailed geological surface geology across both prospects, enhanced understanding of mineralised structures and initial 3D models to guide drill targeting.

At Locksley Resources’ (ASX:LKY / OTCQB: LKYRF) historical Desert antimony mine, mapping has validated and improved the understanding of mineralisation, resulting in a refined and expanded drilling strategy.

Up to three discrete vein positions within an NNE-SSW trending mineralised corridor have been mapped, with massive stibnite observed in and around historical underground workings.

A secondary, east to west mineralisation trend has been identified, facilitating the generation of three geological models for testing, including a potential network of interconnected vein sets.

At the El Campo prospect, the structural mapping has refined targeting of the REE mineralised shear zone.

This work confirmed a steep 70-80° SW dip, which is highly favourable for hosting more mineralisation within Locksley’s leases and potentially amenable to underground mining methods.

Historical trenching is now considered to have under-sampled the main shear horizon, leaving higher-grade REE zones potentially untested.

The E-W trending South Fault was mapped and confirmed at surface, representing a new exploration target to be tested as part of the expanded September 2025 RC drill program.

A 3D solid geology model of El Campo has also been generated, enabling refined drill planning and assisting with potential JORC compliant exploration target definition.

Watch: Locksley's head of critical minerals deep dives into the US industry

Right place, right time

Locksley’s Mojave rare-earths-antimony project is 1.4km from MP Materials’ Mountain Pass in California’s Bernardino County, the Western world’s second largest hard rock rare earth mine, with the El Campo prospect sitting directly along strike.

The Company, up 290% this year, recently received the green light from the Bureau of Land Management (BLM) to begin drilling the historical Desert antimony mine, which last operated in 1937.

It believes the recent announcement of Apple’s US$500 million investment into MP Materials to secure domestically produced rare earth magnets, further validates the strategic importance of the Mojave region as a critical hub for US rare earth supply.

With the US government and global technology leaders prioritising domestic sourcing of critical minerals, Locksley believes it is ideally positioned to capitalise on this shift as it advances exploration in the heart of America’s REE supply chain.

“Rapidly unlock critical minerals”

LKY technical director Julian Woodcock said the structural mapping program had significantly advanced the Company’s understanding of the Desert Antimony and El Campo prospects, confirming the mineralised antimony and REE trends and providing compelling geological models which are being used to refine drill targeting.

“These results support our strategy to rapidly unlock the critical minerals potential of the Mojave project at a time when US government support for domestic supply chains is accelerating.”

What’s next?

At the Desert Antimony mine, an expanded drill program is planned to test these additional targets, with a new Plan of Operations to be submitted to the BLM in late July.

Further approvals are anticipated in early September to allow for RC drilling expansion during the September quarter.

This article was developed in collaboration with Locksley Resources, a Stockhead advertiser at the time of publishing.

This article does not constitute financial product advice. You should consider obtaining independent advice before making any financial decisions.

Originally published as Locksley expands Mojave antimony and REE targets