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Resolution’s 3D modelling at Antimony Ridge shows significant scale potential for antimony, silver with over 100 veins

ASX News, Materials
ASX:RML      MCAP $148.9M
10 April 2026 10:20 (AEST)

Image: Resolution Minerals Ltd

Recent 3D modelling at Resolution Minerals’ (ASX:RML) Antimony Ridge mine project in Idaho has demonstrated an “expanding scale potential,” with modelling of known antimony and silver-bearing veins, vein swarms, and stockworks showing mineralisation over a large area, some 1,000 by 700 metres.

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Disclaimer: This content has been prepared as part of a partnership with Resolution Minerals Ltd and is intended for informational purposes only.

The 3D analysis put together ground mapping to identify more than 100 high-grade veins, which have been modelled as 30 discrete mineralised zones.

The spotted system remains open-ended in all directions, with the high-grade clusters within a broader halo of lower-grade mineralisation with veinlets and stockworks boasting grades consistently between 0.5% and 2%.

And, data from the project (which includes historical mining sites from the First and Second World Wars and the Korean War) have consistently shown high grades. Recent large-volume rock samples from prior open pits returned antimony grades ranging from 31.7% to 48.7%, with an average of 39.2% Sb. Alongside that, silver grades in these samples averaged 430 grams per tonne; gold averaged 0.92.

Finally, older mapping across the target area also identified individual veins up to one metre in true thickness and lengths exceeding 100 metres.

Unsurprisingly, Resolution’s brass has been eager to share the findings with the explorer’s shareholders as it continues to work – and Craig Lindsay, the CEO of U.S. Operations, believes there’s more to come, too.

“Such is the consistency of the vein frequency and the vein swarms that there is a high probability that future work will uncover more veins and extend the length and width of the vein system,” Mr Lindsay declared today.

“Modelling has revealed significant size potential, which demonstrates the strategic importance of Antimony Ridge as a potential source of U.S. domestic antimony supply.”

On that latter point, Antimony Ridge was recently selected for the U.S. FAST-41 Transparency Coverage; the federal designation is expected to accelerate permitting timelines. Resolution has already submitted an application for a large-scale bulk sampling program and a 250-hole drilling run.

With everything chugging along, Resolution has flagged several key releases that shareholders will see in late CY26, including preliminary results, now pending for a 100-kilogram mini-bulk sample of high-grade stibnite, and antimony trioxide samples for pre-qualification with U.S. end-users.

A Phase Two drilling program at the nearby Golden Gate project is also scheduled to begin in May CY26. HotCopper understands that particular Golden Gate campaign will involve up to 45,000 feet of diamond core drilling.

RML shares opened at 7.7c; they’ve since fallen -7.79%.

The Aussie explorer has still banked a +914% YoY return to April, though.

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The material provided in this article is for information only and should not be treated as investment advice. Viewers are encouraged to conduct their own research and consult with a certified financial advisor before making any investment decisions. For full disclaimer information, please click here.

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