Red Mountain Mining Uncovers High-Grade Antimony and Gold at Armidale

Strong Results from Armidale

Red Mountain Mining Ltd (ASX, RMX) has released new rock chip assay results from its 100% owned Armidale Antimony-Gold Project in northeast New South Wales, confirming the presence of high-grade antimony and gold mineralisation. The standout results come from the Oaky Creek prospect, where assays returned antimony grades as high as 36.3% Sb and gold concentrations up to 0.36 grams per tonne. These findings reinforce the company’s exploration thesis targeting orogenic vein-style antimony-gold deposits.

Additional sampling at the East Hills prospect, previously unsampled, yielded encouraging antimony results up to 9.9% Sb over a 70-metre strike extent, indicating a broader mineralised system. Meanwhile, the Horsley Station gold prospect showed anomalous gold values up to 0.25g/t Au alongside antimony, supported by the presence of ultramafic host rocks known to be favourable for gold mineralisation along the Peel Fault system.

Strategic Location and Exploration Model

The Armidale project covers nearly 400 square kilometres along the Peel Fault, a major structural feature with recognized world-class mineral potential. Red Mountain’s exploration model draws parallels to Larvotto Resources’ Hillgrove project, Australia’s largest antimony deposit, which is also an orogenic antimony-gold system. The spatial correlation between antimony and gold at Armidale supports this analogy and suggests the potential for multiple mineralised systems within the tenement.

Rock chip sampling was complemented by extensive soil and auger sampling programs, with further assay results expected soon. These will help refine drill targets, with RMX planning to undertake drilling to test the depth and lateral extent of mineralisation once results are fully interpreted.

Leveraging Critical Minerals Demand

Globally, antimony supply is dominated by China, Russia, and Tajikistan, creating supply risks for Western nations. With China’s export restrictions and soaring antimony prices reaching around US$60,000 per tonne, governments in Australia and the US have ramped up support for domestic critical minerals production. RMX is well positioned to benefit from this trend, advancing exploration not only in Australia but also at its Utah Antimony Project in the United States, where exploration is set to commence shortly.

Following a recent $1.5 million capital raise, RMX is well funded to accelerate exploration and development across its portfolio of critical minerals and gold projects. The company is also progressing a US stock market listing to tap into global investor interest in critical minerals supply chains.

Next Steps and Market Context

Pending assay results from ongoing soil and auger sampling will guide RMX’s next exploration phases, including drilling at Armidale and further work at East Hills and Horsley Station. The company is also securing land access to test spectral anomalies and magnetic targets along the Peel Fault. With Larvotto Resources advancing plant upgrades at Hillgrove, RMX’s Armidale project sits in a highly prospective region gaining increasing attention.

Red Mountain Mining’s recent results and strategic moves underscore its growing role in addressing critical minerals supply challenges, with exploration success in Australia and the US poised to enhance its market position.