Red Mountain Mining Limited (ASX: RMX, US CODE: RMXFF, or “Company”), a Critical Minerals exploration and development company with an established portfolio in Tier-1 Mining Districts in the United States and Australia, is pleased to announce the commencement of metallurgical testing work for the Oaky Creek antimony prospect within the Company’s 100% owned Armidale Antimony- Gold Project in the Southern New England Orogen of northeast New South Wales.
HIGHLIGHTS:
- Metallurgical test work has commenced for the Oaky Creek Antimony Prospect to accelerate progress at Red Mountain’s 100% owned Armidale Antimony-Gold Project in New South Wales
- Detailed mineralogical characterisation and a comprehensive crush, grind and flotation study of a ~20kg representative bulk sample of quartz-stibnite vein material will be undertaken to define the processing behavior and concentrate potential of the ore, which is a key step towards commercially validating the asset
- Initiating metallurgical testing now, in parallel with ongoing exploration, is a deliberate accelerated strategy to demonstrate processing viability of the Oaky Creek mineralisation ahead of planned drilling, materially de-risking the asset and maximising the value of each exploration milestone as it is reached
- The previously reported large coherent soil anomalies and rock sample results of up to 39.3% Sb and 1.09ppm Au for Oaky Creek indicate the presence of a large-scale orogenic antimony- gold vein system with a strike extent of ~3km at surface, which is analogous to Larvotto Resources’ Hillgrove project, Australia’s largest known antimony deposit
- Comprehensive sampling program has just completed with assay results for the program at Oaky Creek expected to be received before the end of Q1 2026
- The Oaky Creek results are expected to define multiple Antimony and Gold targets for drill testing in Q2 2026
- Assay results from the recently acquired Thompson Falls Antimony Project in Montana, USA are pending and expected to be received before the end of March
- The US Government recently launched a $12 billion strategic minerals stockpile initiative, aimed at securing Critical Mineral supply chains. Red Mountain’s Thompson Falls Antimony Project, located 4.2km from the operations of NYSE: UAMY, is well positioned in Antimony and Silver – both federally designated Critical Minerals aligned with US supply chain priorities
With multiple samples from the prospect returning high grade results of up to 39.3% Sb, Red Mountain has commenced a cost-effective program to generate a detailed mineralogical characterisation and a comprehensive crush, grind and flotation study of a ~20kg representative bulk sample of quartz-carbonate-stibnite vein and breccia material (Figure 1) collected from multiple historical pits at Oaky Creek North (Figure 2). The work is designed to define the processing behaviour and concentrate potential of the ore, which is a key step towards commercial validation of the asset.
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