Cosmo Metals (ASX:CMO) confirms antimony prospectivity at Bingara, New England Orogen

Cosmo Metals has added technical support to the antimony potential of its Bingara Project in the New England Orogen of New South Wales, with new LiDAR interpretation and field reconnaissance defining a coherent mineralised corridor now termed the Antimony Gully Trend.

The work marks a shift from regional scale targeting toward the emergence of a specific structural zone with confirmed mineralisation, historical workings and stratigraphic context tied to known antimony districts.

Highlights

• LiDAR interpretation has defined the Antimony Gully Trend extending more than 8 kilometres.
• Clusters of historic antimony workings form a halo around the northeast trending Gineroi fault zone.
• Reconnaissance rock chip sampling confirms a 360 metre line of historic workings at the McManus mine.
• Sampling returned assays up to 5.75 percent antimony with associated anomalous gold.
• The trend sits in similar stratigraphy to Red Mountain’s Armidale Antimony Project and is within the broader Hillgrove district known for antimony-gold deposits.
• Next steps include systematic sampling, soil geochemistry and detailed mapping to define drill targets.

The Bingara Project covers 484.1 square kilometres, positioned along the regional Peel Fault, a structural boundary recognised for its association with antimony and gold mineralisation across the southern New England Orogen.

The LiDAR survey, flown in May 2025, provided a one metre resolution digital elevation model that revealed clusters of small-scale historical workings aligned along the Gineroi cross fault.

This structural zone, now highlighted as the Antimony Gully Trend, appears to have acted as a localising control for antimony-bearing veins.

Initial field reconnaissance focused on the McManus line of workings, where a northeast trending system of historical trenches and shafts extends for approximately 360 metres.

Sampling of quartz vein breccias from mine dumps confirmed visible antimony sulphide, returning assays up to 5.75 percent antimony with 0.14 grams per tonne gold, accompanied by arsenic and mercury anomalies consistent with antimony-gold systems in the region.

The textures observed in the material suggest that current exposures may represent the upper level of a mineralised system, supporting the rationale for systematic exploration to test for continuity and grade variation at depth.

The geological setting aligns with the stratigraphy present at nearby antimony projects to the south and within the district hosting the Hillgrove antimony-gold deposit.

The presence of numerous untested workings within the corridor suggests that previous prospecting identified mineralisation but lacked the benefit of coordinated modern geophysics, geochemistry or drilling.

Cosmo Metals‘ Managing Director, Ian Prentice commented:
“The LiDAR interpretation and our on ground exploration at Bingara continues to confirm the multi commodity prospectivity of the Bingara Project, highlighting the new +8km long Antimony Gully Trend as one of the areas that is highly prospective for antimony in a region that includes the world class Hillgrove antimony – gold deposit being developed by Larvotto Resources. This is a pivotal time for discovery and development of critical minerals with Cosmo well placed to progress its exploration strategy on this standout antimony target, noting that this is one of a number of prospective areas for antimony at Bingara, a region that was identified as having the highest antimony-gold prospectivity in the southern New England Orogen by the NSW Mines Department.”

The Antimony Gully Trend provides Cosmo with a clearly defined structural and geochemical focus for the next phase of work.

Planned activity includes further reconnaissance of additional workings identified through LiDAR, followed by soil sampling and detailed geological mapping to prioritise drill targets.

While exploration remains early stage, the confirmation of antimony mineralisation across an extended corridor establishes a disciplined technical foundation for advancing the project toward drill testing.

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