Armidale Project Yields 39.3% Antimony and 1.09g/t Gold Over 3km Strike

Exploration Breakthroughs at Armidale

Red Mountain Mining (ASX, RMX) has delivered a compelling update on its 100% owned Armidale Antimony-Gold Project in northeast New South Wales, revealing high-grade mineralisation that underscores the project's significant potential. The company’s recent sampling campaigns at the Oaky Creek prospect have returned antimony grades as high as 39.3% and gold up to 1.09 grams per tonne over a 3-kilometre strike length, confirming the presence of a robust orogenic antimony-gold system.

Situated adjacent to the Peel Fault within the Southern New England Orogen, Armidale lies in Australia’s premier antimony province, a region historically underexplored despite hosting over 250 known antimony occurrences. The geological setting and mineralisation style closely mirror Larvotto Resources’ Hillgrove Project, Australia’s largest and the world’s eighth largest antimony deposit, which recently attracted a non-binding indicative acquisition offer from United States Antimony Corporation (NYSE, UAMY).

Strategic Positioning and Investor Confidence

Red Mountain Mining’s exploration success has been bolstered by strong backing from strategic investors, including top shareholders of Larvotto Resources, positioning RMX well for its ambitious FY26 exploration program. The company plans to expand soil and rock chip sampling across multiple prospects, including East Hills and Horsley Station, with further assay results expected imminently.

This momentum coincides with heightened geopolitical focus on securing critical mineral supply chains. The recent US-Australia Critical Minerals Framework agreement, which commits US$3 billion over six months to critical minerals projects across Australia, highlights the strategic importance of antimony and gold. Given that approximately 90% of global antimony production is controlled by China, Russia, and Tajikistan, RMX’s projects are well placed to benefit from efforts to diversify supply away from these dominant sources.

Technological Insights and Future Prospects

Innovative use of multispectral satellite data has identified over 100 stibnite spectral anomalies along the Peel Fault system within the Armidale tenure, many of which remain untested on the ground. This remote sensing approach complements traditional exploration methods and may unlock additional high-potential targets for RMX.

With ongoing sampling programs and land access negotiations underway, Red Mountain Mining is accelerating its exploration activities to delineate further mineralisation zones. The company’s portfolio also includes critical minerals projects in Utah and Idaho, enhancing its exposure to the North American critical minerals market.

A Critical Minerals Play in a Shifting Market

As global demand for critical minerals intensifies, particularly for antimony used in armaments and other strategic applications, Red Mountain Mining’s Armidale Project emerges as a noteworthy contender. The combination of high-grade results, strategic investor support, and alignment with government-backed funding initiatives creates a promising outlook for RMX’s growth trajectory.