Red Mountain Mining Limited (ASX:RMX) Exceptional Oaky Creek Metallurgy Produces High-Grade 51.8% Antimony Concentrate with 85% Recovery

Red Mountain Mining Limited (ASX:RMX) (OTCMKTS:RMXFF) a Critical Minerals exploration and development company with an established portfolio in Tier-1 Mining Districts in the United States and Australia, announced the results of geochemistry, detailed mineralogical characterisation and a pilot crush, grind and flotation study of a representative bulk sample of quartz-stibnite-carbonate vein material from the high-grade Oaky Creek Antimony prospect in the northern portion of the Company's 100% owned Armidale Antimony-Gold project in the Southern New England Orogen of New South Wales. HIGHLIGHTS: - Geochemical and detailed mineralogical characterisation and a pilot crush, grind and flotation study of a representative bulk sample of stibnite vein material from the high-grade Oaky Creek Antimony prospect has produced a high-quality concentrate at 51.8%, well above the 30-40% commercial grade, that would be an excellent feed stock for pyrometallurgical processing to produce a saleable Sb metal. The commercial concentrate produced a very high 85% antimony recovery - The ~20kg sample was collected from shallow historical surface pits at Oaky Creek North and is broadly representative of the orogenic antimony mineralisation exposed at surface at Oaky Creek, the depth extent of which will be tested by the upcoming drilling program - The bulk sample had a measured head grade 19.9% Sb and 0.25ppm Au, which is well within the range of mineralised rock chip grab samples from the Oaky Creek prospect, which have returned values of up to 39.3% Sb and 1.09ppm Au. Significantly, the sample returned a below detection result of <0.01% As, suggesting that Arsenic is likely in very low concentrations at Oaky Creek - Mineralogically, TIMA analysis demonstrates that the sample is dominated by quartz (50.5%) with stibnite (25.2%) the next most abundant phase. Oxidised stibnite and Sb (Fe) oxyhydroxides collectively comprise 5.08%, with significant gangue phases including clays (6.41%), ankerite-dolomite (3.04%), calcite...