Antimony Veins Confirmed Over 1km Strike at Red Mountain’s Armidale Project

Visual Confirmation of Antimony Veins

Red Mountain Mining Limited (ASX: RMX) has announced a significant milestone at its 100%-owned Armidale Antimony-Gold Project in New South Wales. The company’s geological team has visually confirmed the presence of stibnite, the primary ore mineral of antimony, across an inferred strike length exceeding 1 kilometre at the Oaky Creek North area. Similar mineralisation has also been identified at Oaky Creek South, with multiple parallel quartz vein-hosted stibnite systems mapped.

Strategic Location in Australia’s Premier Antimony Province

The Armidale project spans a substantial 392 square kilometres within the Southern New England Orogen, widely regarded as Australia’s premier antimony province. The project lies near other notable antimony and gold deposits, including Larvotto’s Hillgrove Project and Trigg Minerals’ antimony ventures, and extends west of the Peel Fault, a major geological structure known for its mineral potential. Red Mountain’s exploration licence EL9732 was recently granted, opening the door for systematic exploration in a largely underexplored region.

Extensive Sampling and Pending Assay Results

To date, Red Mountain has completed an extensive sampling program at the historic Oaky Creek stibnite mines, collecting over 1,000 individual soil and rock chip samples. These samples are currently undergoing assay testing at Intertek laboratories, with results expected shortly. The assays will be critical in validating the extent and grade of the antimony mineralisation and guiding the company’s next steps, including potential drilling campaigns to delineate the resource.

Market Context: Soaring Antimony Prices

Antimony prices have experienced a remarkable surge in early 2025, breaking through US$50,000 per tonne and recently exceeding US$60,000 per tonne. This rally is driven by tightening global supply, increased demand from flame-retardant and battery sectors, and strategic stockpiling by key buyers. China’s recent expansion of export controls on refined antimony products to include more Western-aligned nations has further tightened supply, underpinning the price strength. Given antimony’s critical role in fire retardants, lead-acid batteries, and high-performance alloys, Red Mountain’s Armidale project is well positioned to capitalize on this favourable market environment.

Looking Ahead: Exploration and Development Potential

While the visual confirmation of stibnite veins is promising, the true economic potential of the Armidale project hinges on the forthcoming assay results. Should these confirm significant grades and continuity, Red Mountain plans to initiate drilling to better define the mineralisation’s depth and lateral extent. The company’s broader portfolio, including gold and battery metals projects in Australia, Canada, and the USA, complements its strategic focus on critical minerals. Investors will be watching closely as Red Mountain advances exploration in a market where antimony’s strategic importance is rapidly growing.