300m Strike of Massive Stibnite Confirmed by Dart Mining Drilling at Banshee Prospect

Consistent Stibnite Intersections Signal Strong Mineralisation

Dart Mining NL (ASX – DTM) has delivered a promising update from its ongoing diamond drilling program at the Coonambula Antimony-Gold Project in Central Queensland. The company has intersected visual stibnite mineralisation in every drill hole completed to date across the Banshee Prospect, confirming the presence of massive antimony-rich zones over a 300-metre strike length that remains open for further exploration.

Notably, drill hole CBADD010 intersected a 0.5-metre section of solid stibnite within a broader 2.2-metre interval featuring quartz veining and fault structures. Other holes, such as CBADD004 and CBADD005a, revealed multiple massive stibnite veins and fault gouge zones, underscoring the structural complexity and mineral richness of the deposit.

Advancing Towards a JORC-Compliant Resource

With over 1,350 metres of diamond drilling completed, Dart Mining is actively processing core samples using its newly established core processing facility, which includes an automated feed core saw. The company is prioritising detailed logging, cutting, and sampling to generate laboratory assay results that will underpin resource estimation efforts.

Chairman James Chirnside highlighted the encouraging geological features encountered, including hydrothermal breccias and quartz veining, which complement the massive stibnite zones. The company is also targeting the broader gold mineralisation observed in earlier drill holes, aiming to delineate a multi-metal system that could enhance project economics.

Historical Context and Regional Potential

The Coonambula Project benefits from a rich exploration history, with previous drilling and rock chip sampling revealing high-grade antimony and gold values. For instance, Dart’s initial hole CBADD001 returned assays including 5 metres at 4.33% antimony and 1.69 grams per tonne gold, with higher-grade intervals within. Historical data from Great Divide Mining and others also support the presence of significant mineralisation along a prospective 5-kilometre strike zone encompassing Banshee and nearby prospects like Lady Mary.

Geologically, the mineralisation is hosted within granodiorite intrusives and structurally controlled shear zones, bearing similarities to other notable antimony-gold deposits in the New England Fold Belt. This setting provides a compelling framework for further exploration and resource development.

Next Steps and Exploration Outlook

Dart Mining plans to continue its farm-in exploration activities, including interpreting results from an induced polarization (IP) geophysical survey designed to refine drill targeting. The company intends to expand drilling along strike and at depth, aiming to define continuity and thickness of mineralised zones. The ultimate goal is to develop a 3D geological model and declare a JORC-compliant resource as soon as drill results support such an estimate.

With the strike length open and multiple high-grade shoots identified, the Coonambula Project stands as a significant opportunity in the antimony and gold space, particularly given the strategic importance of antimony as a critical mineral.