28.1% Antimony Sample Extends Oaky Creek Mineralisation by 600m
Red Mountain Mining has revealed strong assay results extending high-grade antimony mineralisation at its Oaky Creek Prospect in New South Wales, highlighting new drill-ready targets ahead of planned Q2 2026 drilling.
- New stibnite vein sample with 28.1% antimony extends mineralisation strike by ~600m
- Antimony-arsenic soil anomaly near Oaky Creek South expanded by 30%, remains open northeast
- 42 rock samples exceed 0.5% antimony, confirming widespread mineralisation
- Approximately 900 auger soil sample assays pending, expected by end of March
- Project analogous to Australia’s largest antimony deposit at Hillgrove
Extending the Oaky Creek Antimony Story
Red Mountain Mining Ltd (ASX:RMX) has announced compelling new assay results from its ongoing exploration at the Oaky Creek Prospect, part of its 100% owned Armidale Antimony-Gold Project in New South Wales. The latest data confirm the presence of multiple high-grade antimony targets, including a standout stibnite vein rock sample grading 28.1% antimony collected approximately 600 metres north-northwest of previous workings. This discovery effectively extends the known mineralised strike length to around 3 kilometres, underscoring the prospect’s growing significance.
Widening the Anomaly and Building Confidence
The company’s comprehensive auger soil sampling program has further expanded the antimony-arsenic soil anomaly near Oaky Creek South by 30%, with values reaching up to 251 ppm antimony and 1,443 ppm arsenic. This anomaly remains open to the northeast, suggesting potential for additional mineralisation beyond current boundaries. Meanwhile, at Oaky Creek North, soil sampling has reinforced a north-northwest trending antimony anomaly, aligning with previous rock chip and conventional soil results, and indicating widespread mineralisation across the prospect.
Pending Assays and Upcoming Drill Plans
Red Mountain has approximately 900 auger soil samples collected in early 2026 still awaiting assay results, expected before the end of March. These results are anticipated to refine and prioritise multiple orogenic antimony vein targets ahead of planned drill testing scheduled for the second quarter of 2026. The company’s methodical approach, combining detailed soil grids and rock chip sampling, aims to maximise the chances of delineating significant mineralisation and advancing the project towards resource definition.Strategic Location and Market Context
Oaky Creek lies within the Southern New England Orogen, a premier antimony province in Australia, and is situated west of Larvotto Resources’ Hillgrove project, the country’s largest known antimony deposit and one of the world’s largest. The geological setting, featuring hydrothermal quartz-carbonate-stibnite veins within folded and faulted sedimentary rocks, is highly analogous to Hillgrove, lending further credibility to the prospect’s potential. Red Mountain’s broader portfolio also includes critical minerals projects in the United States, with ongoing assay results from its Thompson Falls Antimony Project complementing its Australian efforts.Outlook and Next Steps
With high-grade samples and expanding anomalies, Red Mountain is positioning itself to capitalise on the growing demand for critical minerals like antimony, essential for various industrial applications. The imminent receipt of pending assays and subsequent drill programs will be pivotal in confirming the scale and grade continuity of mineralisation at Oaky Creek, potentially unlocking significant value for investors and stakeholders.Bottom Line?
As assay results and drilling plans converge, Oaky Creek could soon emerge as a key antimony asset in Australia’s critical minerals landscape.
Questions in the middle?
- Will the pending assays confirm further extensions of high-grade antimony mineralisation?
- How will upcoming drill results impact resource estimation and project valuation?
- What are the potential challenges in advancing Oaky Creek from exploration to development?
