Dart Mining Confirms Bonanza Antimony and Gold Grades with Sampling at Coonambula

Dart Mining (ASX: DTM) has confirmed exceptionally high antimony and gold grades from its maiden sampling program at the Coonambula project in central Queensland.

The program, which Dart is conducting under a farm-in joint venture with Great Divide Mining (ASX: GDM), has delivered surface results among the best recorded for the mineral in Australia.

Samples returned up to 65.3% antimony and 17 grams per tonne gold, establishing Coonambula as an emerging high-grade antimony-gold discovery with strong near-surface potential.

Historical Banshee Field Work

Field work at the historical Banshee workings focused on verifying the grade and continuity of stibnite-bearing quartz veins Great Divide Mining first documented.

Rock chip and in-situ sampling confirmed bonanza mineralisation, with assays including 65.3% and 55.5% antimony from float material and 17g/t gold with 26.3% antimony from in-situ quartz-stibnite veins.

The veins occur at surface within a corridor of parallel structures, some spaced only a few metres apart, suggesting strong structural control and excellent open-pit potential.

Assays also reported silver grades up to 97.9g/t, adding another valuable credit to the system.

The results indicate a mineralised envelope that extends beyond historical workings and remains open both along strike and down dip.

Expanded Exploration Program

Following the success of the initial sampling campaign, Dart has initiated detailed channel sampling and an induced polarisation survey across the broader Banshee–Lady Mary corridor, to map chargeability anomalies associated with sulphide-bearing structures and define drill targets for testing later this quarter.

Dart expects to commence reverse circulation drilling before the end of the year, targeting the extensions of the main stibnite-quartz veins and testing beneath the high-grade surface exposures.

The company aims to deliver an initial JORC-compliant resource once drilling confirms continuity, grade distribution and metallurgical recovery characteristics.

Dart’s objective is to advance the project toward early-stage resource definition while evaluating the broader regional potential, adding that antimony’s growing importance as a strategic metal reinforces the commercial significance of Coonambula’s grades.

These latest results have confirmed the company’s belief that Coonambula represents one of Queensland’s most compelling new antimony-gold systems, combining near-surface grades, scale potential, and strong project economics.