Locksley Resources (ASX:LKY) is preparing its 287kg of batch sample material collected from the Desert Antimony Mine in California for advanced flotation and crushing testwork for a finalised process flowsheet.
The company conducted batch sampling over three phases, returning a total weighted average grade of 18.7% antimony from all samples weighing 287kg.
Batch one returned an average weight of 25.7% antimony, while batch two and three identified an average of 21.3% and 11.4% antimony respectively, utilising both ‘high grade’ and ‘low grade’ material.
Locksley will use the data retrieved from batch sampling to feed into the engineering design of the phase one pilot processing facility.
CEO Kerrie Matthews says the company is entering a “very exciting time” with the return of the results, alongside the completion of pad preparation and other pre-drilling activities.
“For Locksley to consistently return double-digit percentages at over 25% underscores the potential of the Desert Antimony Mine,” Matthews says.
“We aren’t just looking at byproduct antimony, we are looking at a rich, primary source of a metal that the US Department of Defence and the energy sector desperately need.”
Locksley is continuing to engage with US engineering consultants and contractors to organise finalised plans for large-scale mineral extraction.
As reported by Mining.com.au in December 2025, Locksley issued expressions of interest to numerous US engineering firms to lead the upcoming scoping engineering design at the Desert Antimony Mine pilot plant.
Locksley Resources is a critical minerals explorer focused on advancing its assets in the US that are considered prospective for rare earths and antimony.
Write to Maddison Elliott at Mining.com.au
Images: Locksley Resources
