Great Divide Mining Joint Venture Delivers High-Grade Gold at Coonambula

Dart Mining Strikes High-Grade Gold at Queensland's Coonambula Project

Dart Mining (ASX:DTM) has delivered impressive surface sampling results from its Coonambula Antimony-Gold Project in Central Queensland, demonstrating expanding gold and antimony potential beyond the established Banshee Mine area. The latest results confirm broad gold zones and reveal high-grade prospects across multiple targets spanning over 5 kilometres of strike.

Furthermore, these results represent a significant expansion of the project's scope, moving beyond the historical antimony focus to establish genuine multi-commodity potential. The systematic exploration approach has successfully identified multiple high-grade targets across the regional corridor.

Exceptional Surface Results Highlight Broad Mineralisation

Standout Trench Results at Banshee

The systematic channel sampling of trench T10, located immediately south of the historical Banshee Mine, returned impressive continuous mineralisation. These results demonstrate significant mineralisation continuity along the Banshee trend.

Moreover, the T10 trench reveals both gold-dominant and antimony-rich zones within the same structural corridor. This suggests a complex mineralisation system with potential for bulk tonnage operations.

Regional Prospect Sampling Delivers High-Grade Gold

Dart Mining's first sampling program beyond the Banshee area has validated the broader gold potential across the project. In addition, these results demonstrate that significant gold mineralisation extends well beyond the historical Banshee antimony focus.

These results open multiple new exploration fronts across the 5km prospective corridor. Additionally, the presence of high-grade silver values adds another dimension to the project's commodity potential.

"Results from samples that lie perpendicular to the Banshee Mine highlight another significant gold zone. It speaks to the potential bulk ore zone, from surface, that will be reviewed… Further away from the Banshee mine we've received impressive gold numbers from both the Lady Margaret and McKonkeys North mine waste piles. This highlights the quality of the gold potential across a broader area of the Coonambula gold field," commented Chairman James Chirnside.

Understanding Antimony-Gold Mineralisation Systems

What Makes This Geological Setting Special?

The Coonambula Project sits within the New England Fold Belt, a highly prospective geological setting that hosts major gold-antimony deposits like Hillgrove in NSW. Antimony-gold systems form when hot mineral-rich fluids move through fractured rock over geological time.

These systems deposit precious metals and antimony in quartz structures, creating predictable exploration targets. Furthermore, the geological processes that create these systems often result in large, long-lived mineral deposits.

Key Characteristics:

• High-grade potential: Antimony-gold systems often produce exceptional grade concentrations
• Structural control: Mineralisation follows specific rock fracture patterns, making exploration predictable
• Dual commodity exposure: Both gold and antimony provide revenue streams, with antimony being increasingly strategic

This geological setting typically hosts large, long-lived mineral systems capable of supporting significant mining operations. However, the presence of both gold and antimony provides dual commodity exposure.

Understanding Antimony's Strategic Value

Antimony is classified as a critical mineral by major economies including the United States, European Union, and Australia. The metal is essential for defence applications, battery technology, and industrial processes.

In particular, antimony serves as a flame retardant in military equipment and ammunition. Additionally, it plays a crucial role in lead-acid battery production and emerging energy storage technologies.

Global antimony supply faces significant constraints, with China controlling approximately 60% of production. This creates supply security concerns for Western nations and supports sustained price premiums for antimony deposits in stable jurisdictions like Australia.

Building on Strong Drilling Foundation

Previous Diamond Drilling Success

Dart Mining's 2025 drilling program at Banshee has already delivered exceptional results that validate the surface sampling program. These intercepts demonstrate the project's potential for high-grade underground mineralisation.

Historical Performance Context

The project's pedigree includes impressive historical results that support the current exploration program. For instance, rock chips have returned up to 65.3% antimony and 17.0g/t gold.

Previous drilling intersections of 6m @ 5.12% Sb & 1.55g/t Au demonstrate consistent mineralisation. Moreover, historical mine production at Perseverance of 20kt @ 20g/t Au validates the region's gold potential.

These historical results, combined with modern exploration techniques, provide confidence in the project's mineral potential. Furthermore, the expanded 5km strike corridor multiplies the exploration opportunity significantly.

Strategic Development Timeline

Dart Mining has outlined a clear pathway to advance the project through 2026. This systematic approach positions the company to rapidly advance from exploration into resource definition.

Immediate Term (Q1 2026)

The company will complete IP Survey interpretation to identify additional drilling targets. In addition, remaining 2025 drill assays are expected in February 2026.

Furthermore, systematic drilling of the Banshee antimony trend will continue. This will build on the strong foundation established by the initial drilling program.

Medium Term (2026)

The expanded drilling program will be based on IP Survey results. Additionally, the company will develop a comprehensive 3D geological model.

Progress toward JORC resource declaration represents a critical value inflection point. This milestone could significantly re-rate the company's market valuation.

Investment Thesis: Multi-Commodity Upside in Proven Terrain

Compelling Value Drivers

The project sits in world-class antimony-gold terrain, 70km from the multi-million-ounce Cracow gold mine. This provides geological validation and infrastructure access within the proven New England Fold Belt.

Gold provides familiar upside potential whilst antimony offers strategic metal exposure. Current antimony prices remain elevated due to supply constraints and defence/technology demand.

With 5km of prospective strike now confirmed through systematic sampling, the project scope has expanded significantly. Multiple high-grade prospects provide several exploration vectors beyond the initial Banshee focus.

The project's proximity to existing mining infrastructure and transport networks reduces development risk. Additionally, this location advantage lowers capital requirements compared to greenfield projects in remote locations.

Scale and Scope Comparison

Project Development Context

Farm-In Joint Venture Structure

The Coonambula project operates under a Farm-In Joint Venture agreement with Great Divide Mining (ASX:GDM). This structure provides Dart Mining with access to advanced exploration targets whilst managing exploration capital efficiently.

Furthermore, this arrangement allows Dart Mining to focus resources on high-priority drilling whilst building toward resource declaration. The joint venture approach provides several strategic advantages.

Benefits of the Joint Venture Approach:

• Shared exploration costs reduce individual company financial exposure
• Combined technical expertise from both exploration teams
• Access to established project database and historical exploration data
• Flexible earning structure allows Dart Mining to increase project ownership through continued exploration success

Regional Mining Context

The project's location within 70km of the Cracow gold mine provides significant advantages. This proximity offers proven regional geology with established gold production.

Existing mining infrastructure includes roads, power, and processing facilities. Additionally, a skilled local workforce familiar with precious metals operations is readily available.

The established regulatory framework for mining development in Queensland reduces many development risks. This regional context potentially accelerates project advancement toward production decisions.

Why Investors Should Monitor Dart Mining

Dart Mining has positioned itself as a serious player in Queensland's strategic metals space through systematic exploration and proven technical capability. The company's approach demonstrates sophisticated exploration strategy.

However, the combination of proven high-grade mineralisation and expanding project scope creates compelling investment potential. Strategic commodity exposure adds another dimension to the investment thesis.

Key Tracking Points:

• February 2026: Remaining drill assay results expected from 2025 program
• Q1 2026: IP Survey results and expanded drill targeting
• 2026: JORC resource development milestone
• Ongoing: Systematic drilling of 5km antimony-gold corridor

The combination of proven high-grade mineralisation, expanding project scope, and strategic commodity exposure creates a compelling investment proposition. With antimony classified as a critical mineral and gold maintaining its role as a store of value, Dart Mining offers dual exposure.

Dart Mining has systematically expanded the Coonambula Project from a single antimony prospect to a 5km gold-antimony corridor with multiple high-grade targets. With upcoming drill results and resource development milestones, the company offers significant leverage to both gold recovery and strategic antimony demand. The project's location in proven Queensland mining terrain, combined with established infrastructure access, positions Dart Mining for potential value re-rating as exploration advances toward resource definition.

The strategic importance of antimony, combined with the enduring appeal of gold exploration in proven geological terrain, makes Dart Mining a compelling consideration. For instance, investors seeking exposure to critical minerals within Australia's established mining jurisdictions should monitor upcoming developments closely.

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