Askari Metals (ASX:AS2) advances Uis Project with high-grade polymetallic trenching results

Askari Metals has reported Phase I trenching results from the OP Pegmatite Target at its 100%-owned Uis Project in Namibia, confirming continuous polymetallic mineralisation across a large-scale pegmatite system.

The program provides new geological and assay data that strengthens confidence in the project’s scale and supports planned drilling aimed at defining a maiden resource.

Highlights

• Phase I trenching confirms continuous mineralisation with peak results of 8340ppm Sn, 0.57% Li2O, 299ppm Ta, 2380ppm Rb and 354ppm Cs
• OP pegmatite system extends 2.2km with widths typically 15m to 30m over ~1.2km before splaying
• Systematic trenching completed on ~40m spacing, generating data to support drill targeting and resource definition
• Historic drilling includes intercepts such as 4m @ 0.16% SnO₂ and 4m @ 314ppm Ta₂O₅
• Mineralisation includes tin, lithium, tantalum, rubidium and caesium across multiple pegmatite targets
• Project located adjacent to the operating Uis Tin Mine with a JORC (2012) MRE of 77.51Mt @ 0.79% Li2O, 0.15% Sn and 82ppm Ta
• RC drilling planned to recommence in H2 2026

The trenching campaign was designed to systematically test four priority pegmatite targets within EPL 7345, with the OP target emerging as a key focus given its scale and continuity.

A total of 135 trenches covering 7269m and 2098 channel samples were completed, providing a detailed dataset across the corridor of interest.

At OP, trenching defined a 2.2km pegmatite system with mineralisation observed along strike and across width, including a southwestern splay extending approximately 500m.

The geometry and continuity of mineralisation are consistent with a large pegmatite system, with multiple trenches intersecting tin, lithium, tantalum, rubidium and caesium.

Tin results form a central component of the dataset, with intercepts exceeding 0.1% Sn along much of the strike length, including 2m @ 4985ppm Sn with 1m @ 8340ppm, and 3m @ 1747ppm Sn with 2m @ 2330ppm.

These results compare with the nearby Uis Tin Mine average grade of 0.15% Sn, providing geological context for the system.

Lithium mineralisation is also widespread, with several trenches returning assays above 0.3% Li2O and averages between 0.3% Li2O and 0.57% Li2O.

These results are derived from near-surface samples, where weathering may affect grades, with the company noting that drilling into fresh rock may provide further clarity on lithium distribution.

Tantalum results show consistent mineralisation above 80ppm across the full 2.2km strike and associated splays, with peak values of 299ppm Ta, with grades comparable to the adjacent Uis Tin Mine average of 82ppm Ta.

Askari Metals Executive Director, Mr. Gino D’Anna, stated:

“Phase I trenching was completed at the OP Pegmatite Target at 40m spacing along its strike length confirming continuous mineralisation of lithium, tin, tantalum and rubidium. Mineralisation occurs along the entire pegmatite length and across width with varying concentrations exhibiting results up to 8,340 ppm Sn, 0.57% Li2O, 299 ppm Ta, 2,380 ppm Rb and 354 ppm Cs. We are encouraged by the findings and are actively planning for a follow-on drill program to build on the success of both the recently completed trenching and previously completed reconnaissance drilling. Importantly, these results complement the assays received at the DP Target and provide a strong indication of a significantly mineralised system warranting further exploration as we target a maiden resource at our Uis Project later this year.”

The trenching results also address limitations of earlier drilling, where insufficient geological control affected targeting due to cover from gravel scree and calcrete.

The current dataset improves understanding of pegmatite geometry and supports more precise drill planning, with drilling required to determine true thickness and extent at depth.

From a project development perspective, the Uis Project sits within an established mining district with proximity to infrastructure, including the Walvis Bay Deepwater Port located less than 230km away by tarred road.

The presence of multiple critical minerals across a single system introduces a polymetallic exploration profile as the project advances.

Looking ahead, additional assay results from the PS and K9 targets are expected in April 2026, while RC drilling is scheduled for H2 2026.

The next phase of work is directed toward testing subsurface continuity and advancing toward a maiden resource, with the trenching program providing the geological framework required to progress the project.

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