Red Hill Minerals (ASX: RHI) has completed its maiden diamond drilling program at its Broken Hill project in New South Wales, intersecting broad zones of lead, zinc, and silver mineralisation across multiple targets.
Broken Hill forms part of the company’s earn-in joint venture with Peel Mining (ASX: PEX) in the Curnamona province on the Mundi Mundi Plains.
The five-hole, 3,734-metre program tested greenfields targets generated from modern geophysics and stratigraphic interpretation, confirming the presence of stacked mineralised horizons and sulphide assemblages consistent with “Broken Hill Type” (BHT) systems.
The maiden program targeted the Dementus, Woolly, and Immortan prospects, along with the K1 copper–gold target, with drilling focused on positions interpreted to be favourable for BHT mineralisation.
The results validate Red Hill’s exploration model and provide a technical foundation for follow-up work across the project area.
Dementus the Priority Target
At the Dementus prospect, diamond hole 25DMDD001 intersected a broad package exceeding 250m down-hole from 263m, with the most significant interval returning 91.1m at 0.1% lead and 0.3 grams per tonne silver from 328m.
A deeper zone in the same hole returned 152.6m at 0.2% zinc and 1.3g/t silver from 658m, including higher-grade internal intervals.
Red Hill identified Dementus as the highest-priority target based on sulphide assemblages, textures, and alteration index geochemistry, planning follow-up work there in February that will include high-resolution gravity and audio-magnetotelluric surveys.
Down-hole electromagnetic surveys completed at Dementus also identified conductive plates aligning with parts of the mineralised sequence that Red Hill believes may represent up-dip extensions of sulphide mineralisation.
Woolly, Immortan, and K1 Results
Drilling at the Woolly prospect tested a thickening of the prospective BHT sequence toward the north-west based on updated stratigraphic interpretation.
Hole 25WLDD001 intersected 81m at 0.1% zinc and 0.2g/t silver from 315m, with additional narrow zones of elevated base metals at depth.
At the Immortan prospect, drilling returned a best result of 7m at 0.2% copper, 0.6g/t silver, and 0.1g/t gold from 221m.
The NSW government will co-fund up to $250,000 for this drilling as part of its Critical Minerals and High-Tech Metals Exploration program.
The K1 target tested a hydrothermal magnetite body adjacent to a modelled fault structure but did not replicate the historical high-grade gold intersections reported nearby, with a best result of 1m at 0.3g/t gold, 0.7g/t silver, and 0.2% copper from 433m.
Red Hill will now integrate drilling, geophysical and geochemical data to guide further diamond drilling, while results from the maiden program will inform prioritisation across the entire Broken Hill project as the company advances its exploration strategy.
