Dart Mining Expands Shallow Gold Zones at Coonambula with Latest Drill Assays

Broad Gold Zones Emerge from Latest Diamond Drilling

Dart Mining NL (ASX:DTM) has delivered a fresh boost to its Coonambula Antimony-Gold Project near Eidsvold, Queensland, with assay results from its latest diamond drill holes CBADD011 to CBADD013 confirming an expanding and shallow gold zone at the Banshee prospect. The standout intercept came from CBADD013, which returned 4.9 metres at 5.27 grams per tonne (g/t) gold starting from just 21 metres downhole, including a high-grade 1 metre interval at 14.6 g/t Au. These results suggest that broad gold mineralisation extends both down dip and along strike beyond previously known zones, highlighting potential areas that earlier reverse circulation (RC) drilling may have missed.

Chairman James Chirnside noted the significance of these findings, pointing to the advantages of diamond core drilling in providing better structural understanding compared to historical RC methods. He emphasised that the broad gold zones, previously overlooked or less understood, are starting to emerge as an important economic factor at Banshee, complementing the known high-grade antimony and silver shoots.

Drilling Progress and Mineralisation Characteristics

Throughout 2025, Dart Mining completed 3,585.9 metres of diamond core drilling at Banshee, with assays now received for all holes. The program faced delays due to Queensland’s wet season but is resuming momentum as weather improves. The company is targeting a 4,000-metre drilling milestone to underpin a maiden Mineral Resource Estimate (MRE) and has commenced metallurgical test work on selected composite cores to evaluate ore types and recoveries.

Interestingly, the new drill holes show gold-only mineralisation with low silver and antimony grades within the main Banshee zone. This contrasts with the high-grade antimony and silver shoots, which appear more localized and shoot-like in nature. Structural complexities such as faulting may be influencing mineral continuity, with Dart Mining planning additional shallow, closely spaced drilling to clarify these interpretations.

The company’s approach and results build on a growing body of evidence from previous drilling and surface sampling, including high-grade antimony, gold, and silver assays reported by Dart and its joint venture partner Great Divide Mining (ASX:GDM). This project sits in a geologically prospective region with similarities to other intrusion-related gold systems in Queensland and New South Wales.

Strategic Implications and Next Steps

Dart Mining is advancing the Coonambula project under a farm-in joint venture with Great Divide Mining, focusing on unlocking the potential of the Banshee antimony-gold mineralised trend. The latest results feed into ongoing efforts to develop a 3D geological model and progress towards a JORC-compliant resource estimate. These steps are critical for defining the economic viability of the project and guiding further exploration and development decisions.

Notably, Dart Mining’s recent success at Coonambula complements its broader Queensland strategy, which includes the Triumph Gold Project where the company recently uncovered new high-grade gold zones, as well as its ongoing evaluation of historic goldfields in Victoria. This regional diversification may provide optionality as Dart advances multiple projects with varying commodity exposures and exploration maturity. The company’s measured pace and methodical approach to drilling and sampling underscore the challenges of interpreting complex mineralisation but also highlight the value of detailed core-based exploration.

For investors tracking Dart Mining, the coming months will be pivotal as assay results from ongoing drilling arrive, metallurgical testing progresses, and the company moves closer to declaring a maiden resource. The interplay between gold and antimony mineralisation, structural controls, and potential fault offsets adds layers of complexity that will require careful interpretation to unlock value.

This update follows Dart Mining’s earlier reports of record assays at Banshee and recent discoveries at Triumph, reinforcing the company’s growing footprint in Queensland’s gold and antimony space and its capacity to deliver meaningful exploration advances under challenging conditions.