Locksley Resources adds high-grade silver punch to US critical minerals play
- James Pearson
- 2 days ago
- 3 min read
Locksley Resources (ASX: LKY) has delivered another eye-catching result in California, uncovering a significant high-grade silver corridor at its Mojave project, adding a powerful new dimension to the company’s critical minerals story.
The company has identified a consistent northwest–southeast trending mineralised corridor stretching almost three kilometres across the North Block of its project after a detailed surface sampling campaign delivered high-grade silver hits and robust base metal credits.
Management says the discovery has materially extended the footprint of mineralisation well beyond Locksley’s original silver find and pushes the project firmly into “district-scale” territory.
Rock chip sampling has returned silver grades of up to 409 grams per tonne (g/t), with multiple samples exceeding 30g/t, reinforcing the continuity and strength of the system.
Notably, the silver is not alone. Associated copper, lead and zinc values have also been confirmed, with copper assays reaching as high as 4.2 per cent, underlining the polymetallic-rich nature of the corridor.
The newly defined corridor runs about 2.4 kilometres west-northwest of the historic Hendricks shaft and extends another 600 metres east-southeast past the old workings, trenches and stockpiles.
Earlier signs of mineralisation in the area, including a standout sample collected last year grading an eye-watering 46 per cent antimony and more than a kilogram of silver per tonne - as well as another returning 219g/t silver - had previously been treated as isolated occurrences. Locksley now believes however, these earlier results may all be expressions of a single, extensive hydrothermal system.
Geologically, the signs are encouraging. High-grade samples collected from outcropping veins and old stockpiles display gossanous selvages and boxwork textures - classic indicators of weathered sulphide-rich systems. That sort of surface expression often hints at fresher, potentially higher-grade sulphides lurking at depth, a prospect not lost on seasoned explorers.
Adding to the intrigue, several samples were taken from areas showing visible copper mineralisation, including malachite staining along quartz veins. One standout rock chip delivered 117g/t silver alongside 3.1 per cent copper, confirming copper is a meaningful component of the system rather than just background noise.
In total, Locksley says it has now collected close to 400 rock chip samples across the North Block, with more than 260 taken along the newly interpreted mineralised corridor. With multiple samples now in the bag, the company has a solid foundation to start prioritising targets rather than simply chasing isolated anomalies.
Strategically, the silver discovery slots neatly alongside Locksley’s core antimony ambitions. The Mojave project also hosts the historic Desert Antimony mine, one of the highest-grade known antimony occurrences in the United States. At a time when the country has no domestic antimony production, coupled with growing demand from defence, semiconductor and alloy markets, ongoing development of Locksley’s Mojave project has generated a great deal of attention in Washington.
Defining a 3km mineralised trend with surface results of up to 409 g/t silver and 1.5 per cent copper is a highly encouraging outcome. Importantly, this discovery complements our core antimony development strategy and gives exposure as a diversified U.S. critical minerals company.
Locksley Resources Managing Director Kerrie Matthews
To sharpen the picture, Locksley says it plans to roll out detailed geological mapping along the corridor, backed by petrology and geochemistry, which the company will run in parallel with a review of its induced polarisation and electromagnetic surveys. The aim is to zero in on high-priority, drill-ready targets and test whether the broad surface footprint stacks up as a coherent, high-grade system at depth.
For a company already positioned at the intersection of geopolitics and critical minerals, the emergence of a large silver-rich corridor in Mojave could prove a timely bonus for Locksley.
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