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Critmins explorer Red Mountain Mining (ASX:RMX) has confirmed surface tungsten skarn mineralisation at its 100%-owned Pioneer Tungsten Project in Montana, after testing 30 rock chip samples collected across the Mammoth and Greenstone prospects, two of the three claim areas comprising the project.
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The sampling program returned strongly anomalous tungsten (WO3) values, with ten of the 30 collected samples containing over 500ppm tungstate.
Within Greenstone, five samples assayed above 1,000ppm (0.10%) WO3, reaching 3,159ppm (0.32%) WO3 from a garnet skarn float sample. At Mammoth, a skarn outcrop sample returned a peak result of 2,856ppm (0.29%).
Red Mountain pointed out that, notably, six samples from the Greenstone area were taken north of the current footprint within a newly staked area the explorer expects to be officially granted by the end of July CY26.
“Assay results confirm the presence of garnet skarn-hosted tungsten mineralisation at surface within Red Mountain’s Pioneer project, with the best results returning comparable values to the grade of Almonty’s Gentung tungsten deposit,” the Aussie explorer wrote in an update on Wednesday.
HotCopper understands Red Mountain now plans to run further to “better define the extent, variability and continuity of the surface mineralisation.”
“This [definition] work will initially focus on the highest priority Greenstone prospect, with sampling planned for mid-July,” the explorer explained, “following which the company expects to be able to move rapidly to drill testing of downdip extensions of skarn mineralisation, subject to positive results.”
Heading into Wednesday, RMX is selling at 1.1cps.
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