Red Mountain Mining Unveils New High-Grade Antimony Zones at Armidale
Red Mountain Mining has identified multiple highly anomalous antimony soil anomalies at its Armidale project in NSW, revealing new target zones beyond historic pits and suggesting a significant mineralised network along the Namoi Fault.
- New highly anomalous antimony soil zones at Oaky Creek North and South
- Soil assays up to 333ppm antimony detected
- Northern antimony area may extend Oaky Creek North strike by ~1km
- Gold-in-soil anomalies also identified near antimony zones
- Rock chip assay results pending, drilling planned based on outcomes
Expanding the Antimony Footprint
Red Mountain Mining Limited (ASX – RMX) has reported promising exploration results from its 100% owned Armidale Antimony-Gold Project in New South Wales. Recent soil sampling at the Oaky Creek area has revealed multiple highly anomalous antimony zones, including new target areas beyond the historically mined pits at both Oaky Creek North and South.
The standout discovery is a new northern antimony anomaly, located approximately one kilometre southeast of the historic Oaky Creek North pits. This zone recorded soil antimony concentrations as high as 333 parts per million (ppm), suggesting a potential strike extension of the known mineralisation. Additionally, a newly defined antimony soil trend north of Oaky Creek South confirms a previously unrecognised mineralised corridor.
Geological Context and Mineralisation
The distribution of antimony in soils points to a network of multiple stibnite-bearing veins extending over 2.3 kilometres along the Namoi Fault, with mineralisation detected up to 400 metres from the fault line. This structural setting is significant, as the Namoi Fault appears to control the orientation and extent of the mineralised veins, which differ in strike between the northern and southern zones; likely due to fault movement.
Complementing the antimony findings, gold-in-soil assays have identified encouraging anomalies within the new northern antimony area and near the Oaky Creek South workings. Although the gold assay method used (Aqua Regia) is less sensitive than fire assay, the presence of gold alongside antimony is consistent with the mesothermal metal suite typical of the Southern New England Orogen, which includes gold, antimony, arsenic, silver, mercury, and tungsten.
Next Steps and Exploration Potential
Rock chip sampling has been conducted to support the soil results, with assay results expected by the end of June. These will provide further insight into the grade and extent of mineralisation. Pending encouraging assay outcomes, Red Mountain plans to initiate drilling to test the depth and lateral continuity of the stibnite veins.
The Armidale project lies within a highly prospective region known for antimony and gold mineralisation, situated near other notable projects such as Larvotto’s Hillgrove and Trigg Minerals’ antimony ventures. Despite over 400 known mineral occurrences along the Peel Fault system, the area remains underexplored, with limited historical drilling and surface sampling, underscoring the potential for significant discoveries.
Red Mountain’s methodical approach, including systematic soil sampling and structural interpretation, positions the company well to unlock value from this emerging antimony-gold district. The pending assay results and subsequent drilling campaign will be critical milestones in defining the project’s resource potential.
Bottom Line?
As assay results arrive and drilling plans unfold, Red Mountain’s Armidale project could soon reshape the antimony-gold landscape in NSW.
Questions in the middle?
- Will the pending rock chip assays confirm the high-grade nature of the newly identified antimony zones?
- How extensive and continuous are the stibnite vein systems at depth beyond the soil anomalies?
- What impact will native title negotiations and environmental approvals have on exploration timelines?
