Locksley Resources (ASX:LKY | OTCQX:LKYRF | FSE:X5L) LiDAR survey enhances geological understanding at Mojave’s desert antimony mine

Locksley Resources has completed a high-resolution underground LiDAR survey at the Desert Antimony Mine, part of the Mojave Project in San Bernardino County, California.

The work provides a clearer structural and geological foundation as the company progresses toward targeted drilling and redevelopment planning for one of the United States’ historically significant antimony prospects.

Highlights

• High-resolution LiDAR survey completed at the Desert Antimony Mine.
• Approximately 236 metres of historical underground development confirmed across four levels.
• Workings span a strike length of about 130 metres.
• Three quartz-carbonate-stibnite vein zones identified through the mapped stopes.
• Detailed geological mapping scheduled to commence in November.
• Access and safety assessments underway to enable targeted underground sampling.
• Data being integrated into the three-dimensional geological model to support drilling design and JORC exploration targeting.
• Work aligns with Locksley’s mine-to-metal strategy to support a fully domestic U.S. antimony supply chain.

The Mojave Project comprises a large claim position in an area of renewed strategic interest, given the United States currently has no domestic antimony production despite the metal being critical to defence, semiconductor, and specialised alloy applications.

The Desert Antimony Mine last operated in 1937, leaving a network of underground workings that, until now, lacked modern spatial data.

The completed LiDAR survey reveals approximately 236 metres of development across four underground levels, extending along a strike of roughly 130 metres.

The three-dimensional dataset delineates multiple previously mined stope areas where quartz-carbonate-stibnite mineralisation was historically extracted, providing greater clarity around vein geometry and continuity which in turn supports more refined geological interpretation and more precise drill hole planning.

Managing Director and CEO Kerrie Matthews noted the technical significance of the new dataset, stating:

“The LiDAR dataset has given us an increased level of geological detail and understanding of historical mining at the Desert Antimony Mine that didn’t exist before. The survey has confirmed the position of the historically mined stibnite-bearing veins and the quality of this data materially enhances our ability to progress drilling design with far greater precision. Importantly, this work also underpins our broader Mine-to-Metal US growth strategy by supporting a fully domestic antimony supply chain in the U.S.”

The survey outcomes are now being incorporated into an updated geological model that will inform Locksley Resources‘ upcoming drilling program and the preparation of a formal exploration target.

Concurrent metallurgical test work and process route assessments are underway to ensure alignment between geological understanding and downstream processing pathways.

Next steps include detailed geological mapping of the accessible underground workings, completion of safety assessments to allow systematic sampling, and finalisation of drill targeting.

The refined geological model is also expected to support ongoing engagement with strategic U.S. supply chain and funding stakeholders, particularly as government initiatives continue to focus on restoring domestic critical minerals capability.

The LiDAR survey marks a steady, technically grounded progression in Locksley’s redevelopment strategy.

While further drilling, sampling, and engineering studies will be required before decisions on mine re-entry can be made, the new dataset provides a stronger framework for those future stages.

In the broader context of U.S. critical minerals policy, antimony remains a material of strategic priority, and Mojave’s clarified subsurface geometry strengthens Locksley’s position as it advances along its stated mine-to-metal pathway.

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