Red Mountain Mining reports exceptional antimony assay results up to 28.34% Sb from its Armidale project, highlighting a promising orogenic mineral system with further exploration underway.
- High-grade antimony assays up to 28.34% Sb at Oaky Creek
- Mineralisation extends 500m beyond historical workings
- Planned shallow costeaning and soil sampling at multiple prospects
- Gold assay results from Oaky Creek pending in July 2025
- Project located in a highly prospective but underexplored NSW region
Exceptional Antimony Grades Confirmed at Oaky Creek
Red Mountain Mining Limited (ASX – RMX) has announced compelling exploration results from its 100% owned Armidale Antimony-Gold Project in New South Wales. Rock chip samples from the Oaky Creek prospect returned antimony grades as high as 28.34%, confirming the presence of high-tenor mineralisation within quartz-stibnite veins. These results extend mineralisation up to 500 metres along strike from historical workings, suggesting a significant orogenic antimony system with potential scale.
Strategic Exploration in a Premier Antimony Province
The Armidale project lies within the Southern New England Orogen, a region renowned for its antimony and gold deposits, including Larvotto’s Hillgrove deposit located approximately 100km east. Red Mountain’s findings at Oaky Creek align with the geological setting of hydrothermal quartz veins and breccias typical of orogenic mineral systems. The company’s soil sampling has identified strong antimony anomalies, including two new high-grade soil anomalies yet to be tested by rock chip sampling due to lack of outcrop.
Next Steps – Costeaning, Mapping, and Gold Assays
Building on these promising results, Red Mountain plans shallow costeaning to expose bedrock beneath soil anomalies lacking surface outcrop. Detailed geological mapping will focus on understanding the relationship between mineralisation and the Peel Fault system, aiming to generate drill targets by late 2025. Meanwhile, gold assay results from the Oaky Creek rock samples are eagerly awaited in July, potentially adding further value given the association of gold with similar antimony systems in the region.
Expanding Exploration to East Hills and Horsley Station
Beyond Oaky Creek, Red Mountain has identified two additional priority targets – the East Hills antimony prospect and the Horsley Station gold prospect. Both show evidence of historical mining but have not been systematically explored. Planned soil sampling campaigns will cover extensive grids to delineate gold and antimony anomalies, leveraging the project's strategic location along the Peel Fault, known for hosting numerous world-class mineral occurrences.
A Project Poised for Growth in a Critical Minerals Landscape
Red Mountain’s Armidale project is part of a broader portfolio including gold, lithium, and base metals across Australia, Canada, and the USA. The recent high-grade antimony results reinforce the project's potential within a critical minerals sector increasingly vital for emerging technologies. While exploration remains at an early stage, the combination of robust assay results, geological context, and planned follow-up work positions Red Mountain as a company to watch in the evolving antimony and gold markets.
Bottom Line?
With high-grade antimony confirmed and gold assays pending, Red Mountain’s Armidale project is entering a pivotal phase that could reshape its market prospects.
Questions in the middle?
- Will the pending gold assay results confirm significant gold mineralisation alongside antimony?
- How extensive and continuous is the antimony mineralisation beyond the current 500m strike extent?
- What will the shallow costeaning and soil sampling reveal about the newly identified high-grade soil anomalies?