Locksley Resources (ASX:LKY | OTCQX:LKYRF | ADR:LKYLY) confirms high-grade antimony continuity at Desert Antimony Mine

Locksley Resources (ASX:LKY | OTCQX:LKYRF | ADR:LKYLY) has reported high-grade antimony assays from surface exposure mapping at its historical Desert Antimony Mine within the Mojave Project in California, with results confirming continuity of stibnite mineralisation above and along strike from prior underground workings.

The assays, which include a peak value of 16.90% Sb, coincide with the commencement of diamond drilling onsite, providing geological validation at a pivotal stage of the Company’s exploration programme.

Highlights

• 4 surface grab samples returned 13.82% Sb, 16.90% Sb, 11.48% Sb and 11.54% Sb

• Results confirm continuity of high-grade stibnite mineralisation along strike and above historical underground workings

• Surface data supports refinement of the geological model and optimisation of diamond drill targeting

• Diamond drilling is underway at DAM

The surface samples were collected during access track earthworks in preparation for the maiden drilling programme, identifying extensions of stibnite bearing mineralised veins at surface and reinforcing interpretations derived from detailed underground mapping.

The Company states that these surface results align closely with previously reported high-grade batch sampling from historical underground workings, which returned weighted averages up to 25.7% Sb.

Geologically, the Desert Antimony Mine is located within the northern portion of the North Block in the Clark Mountain District, San Bernardino County, California.

The deposit comprises quartz stibnite veining hosted within granite gneiss, striking N20E and dipping 75W, with a known width of 1.22m highlighted from historical reporting. Historic production ranged from 100 to 1,000 tons with Sb grades ranging from 15% to 20%, although the extent of the ore body is unknown.

The confirmation of high-grade antimony at surface is described as geologically significant because it validates the interpretation that the stibnite vein lodes extend above and along strike to the north of historic mine levels.

By observing primary stibnite bearing veins in surface bedrock, the geology team confirmed the structural framework and offsets previously interpreted from underground mapping.

This work has enabled development of a more robust 3D geological model, with the precise location of high-grade surface expressions informing optimisation of current diamond drill hole planning.

Locksley Non-Executive Technical Director Ian Stockton stated,

“With diamond drilling now underway at DAM and the rig actively turning, these results reflect our strong technical foundation and focus on high-confidence targets. Commencing this program is a defining milestone, as it allows us to understand the structural architecture and scale of a potential significant critical minerals hub.”

The region is characterised by Tertiary-age regional extensional deformation, resulting in north south trending mountain ranges separated by gently sloping valleys.

With diamond drilling in progress, the Company has outlined ongoing drilling to refine geometry and evaluate resource potential, progressive reporting of assay results, integration of new data into an updated comprehensive 3D geological model, core sampling and analysis to support metallurgical and processing test work aligned with U.S. Department of Energy Critical Minerals programs, and advancement of design and construct tendering for a Phase 1 Pilot Processing facility.

As the programme advances from surface validation to active drilling, forthcoming assay results from diamond core will determine the continuity and scale of the stibnite system identified to date, providing the next layer of geological definition at Desert Antimony Mine.