Dart Mining Unveils High-Grade Gold and Antimony Zones at Coonambula

Exploration Breakthrough at Coonambula

Dart Mining NL (ASX, DTM) has reported compelling surface sampling results from its Coonambula Antimony-Gold Project in Central Queensland, reinforcing the project's potential as a significant source of gold, silver, and antimony. The recent trench and rock chip sampling, conducted near the historic Banshee Mine and at the Lady Margaret and McKonkeys North prospects, has revealed broad zones of high-grade mineralisation that extend beyond previously known areas.

The highlight trench (T10), located immediately south of the Banshee Mine, returned a 5-metre interval averaging 2.55 grams per tonne (g/t) gold alongside 1.35% antimony, including a standout 1-metre sample grading 8.92 g/t gold. Additional rock chip samples westward along strike showed impressive gold and silver grades, with one mullock pile sample yielding 2.85 g/t gold and 125 g/t silver. These results underscore the presence of a potentially extensive bulk ore zone accessible from surface.

Expanding the Gold Footprint

Beyond Banshee, Dart Mining's sampling at Lady Margaret and McKonkeys North – located 1.7km and 2.3km northwest respectively – has delivered encouraging high-grade gold assays from historical mine waste. Notably, McKonkeys North samples returned up to 10.45 g/t gold and 19.4 g/t silver, indicating that these satellite prospects could contribute materially to the overall resource base.

Chairman James Chirnside highlighted the significance of these findings, noting that the results "speak to the potential bulk ore zone, from surface," and emphasized the company's focus on determining whether these discrete deposits can be linked to build a sizable resource inventory. This strategic approach aims to leverage the broader gold potential across the Coonambula gold field.

Looking Ahead, Drilling and Resource Development

Dart Mining is awaiting the full suite of diamond drilling assay results from its 2025 program, expected in early February 2026. These results will be critical in confirming the extent and grade continuity of the mineralisation identified at surface. The company plans to integrate these data with ongoing geophysical surveys, including induced polarization (IP) surveys, to refine drilling targets and expand exploration efforts along the Banshee antimony trend.

Further, Dart Mining intends to develop a 3D geological model and aims to declare a JORC-compliant resource at the earliest opportunity, contingent on positive drilling outcomes. This progression marks a pivotal step toward advancing the project from exploration to potential development.

Strategic Positioning in Queensland’s Mineral Landscape

The Coonambula Project sits within a highly prospective geological setting dominated by granodiorite intrusions of the Rawbelle Batholith, known to host significant antimony-gold mineralisation. The project’s proximity to established goldfields such as Cracow and Eidsvold further enhances its strategic value. Dart Mining’s farm-in joint venture with Great Divide Mining (ASX, GDM) leverages historical data and recent exploration to unlock value in this underexplored region.

With a portfolio that also includes the advanced-stage Triumph Gold Project and interests in Central Victoria’s historic goldfields, Dart Mining is positioning itself as a growing player in Australia’s precious and strategic metals sector.