Great Southern Mining Ltd
Great Southern Mining Launches Major Diamond Drilling Campaign With Co-Funded Grants
Great Southern Mining (ASX: GSN) has commenced a significant Great Southern Mining diamond drilling program targeting two high-potential prospects, with up to $337,500 in co-funded grants from the Western Australian Government's competitive Exploration Incentive Scheme (EIS). The company is now drilling at the Diorite Hill platinum group elements (PGE) target and will subsequently move to the promising Golden Boulder gold discovery.
This marks a pivotal moment for GSN as the company tests innovative exploration concepts at both projects using advanced drilling techniques. Furthermore, the EIS co-funding validates the technical merit of both targets, with only 39 successful applications selected through the competitive assessment process.
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Major Diamond Drilling Program Underway
Diorite Hill: Testing Platinum Reef Analogues
Diamond drilling has commenced at the Diorite Hill Layered Intrusive Complex within GSN's 100% owned East Laverton Project. The program features a single 900-metre deep hole targeting two discrete reflective horizons identified through seismic surveys.
The Diorite Hill Complex covers approximately 110km² and represents a significant layered intrusive system prospective for reef-style PGE, nickel, and copper mineralisation. In addition, GSN's geological team has drawn comparisons to the renowned Merensky Reef of the Bushveld Complex in South Africa, famous for its platinum mineralisation.
Key Technical Features:
- 7km thick cumulate rock sequence
- Multiple intrusive pulses with seismically defined dense reflector horizons
- Target horizons ("Unit A" and "Unit B") never previously drill tested
- Reflective horizons do not propagate to surface, making them blind to previous exploration
Managing Director Commentary
"GSN's geological team has likened these target horizons to the Merensky Reef of the Bushveld Complex in South Africa, known for its rich platinum mineralisation," said Matthew Keane, Managing Director.
Golden Boulder: First Deep Gold Drilling
Following completion at Diorite Hill, the diamond rig will relocate to GSN's Duketon Gold Project to undertake the first deep drilling at the Golden Boulder discovery. This represents a significant step change from previous exploration, which rarely penetrated below 150 metres from surface.
Recent RC Drilling Highlights:
| Hole ID | Intercept | Grade | Notable Features |
|---|---|---|---|
| 25GBRC009 | 5m at 14.57 g/t Au from 41m | Including 1m at 70.94 g/t Au | High-grade gold zone |
| 25GBRC030 | 5m at 5.1 g/t Au from 25m | Including 1m at 23.9 g/t Au | Near-surface mineralisation |
| 25GBRC054 | 6m at 6.7 g/t Au from 48m | Including 1m at 34.5 g/t Au | Consistent grade continuity |
The Great Southern Mining diamond drilling program will target key structures believed to be the source of high-grade gold mineralisation. Consequently, the first EIS co-funded hole is planned to 700 metres depth.
Understanding Layered Intrusive Complexes: The PGE Connection
Layered intrusive complexes are geological formations where different rock types have settled in distinct layers during the cooling of large magma chambers. These structures are globally significant for platinum group element (PGE) mineralisation.
What Are Layered Intrusive Complexes?
These formations develop when large volumes of magma cool slowly within the Earth's crust. This process allows different minerals to crystallise and settle at different rates. Dense minerals like platinum group elements settle into specific layers or "reefs" that can contain economically viable concentrations of precious metals.
Global Significance:
- The Bushveld Complex in South Africa hosts the world's largest PGE reserves
- Similar geological settings have produced major discoveries like the Gonneville Intrusion (Julimar Complex) with 17 million ounces of PGEs and 960,000 tonnes of nickel
- Seismic surveys can identify dense reflector horizons that often coincide with PGE-bearing layers
GSN's innovative approach uses reprocessed seismic data to target these previously untested horizons. For instance, this represents a sophisticated exploration strategy backed by proven geological concepts.
Strategic Drilling Locations and Timing
The Great Southern Mining diamond drilling program follows a logical sequence designed to maximise geological understanding and exploration efficiency:
| Target | Depth | Primary Commodities | Key Features |
|---|---|---|---|
| Diorite Hill | 900m | PGE, Nickel, Copper | First test of seismic reflector horizons |
| Golden Boulder (Ogilvies) | 700m | Gold | First deep drilling; structural intersection |
| Golden Boulder (Main Line) | 220m | Gold | Target known high-grade mineralisation |
Phase 1 – Current: Testing innovative PGE concept at Diorite Hill with a single deep hole. The program targets reflective horizons identified through advanced seismic interpretation.
Phase 2 – Next: Deep structural drilling at Golden Boulder's Ogilvies prospect. This phase aims at intersecting multiple fault systems including the potentially significant Rosemont Fault at depth.
Phase 3 – Follow-up: Targeted drilling of the main line mineralisation. However, this is where high-grade gold intersects have been consistently reported from shallow RC drilling.
Investment Thesis: Dual-Commodity Strategy Delivering Value
GSN's approach combines two distinct but complementary exploration strategies. Furthermore, these strategies position the company for multiple discovery scenarios across different commodity sectors.
PGE Exploration Advantages
The Diorite Hill target offers exposure to the emerging PGE sector through a large-scale geological target with significant upside potential:
- Scale: Large-scale target with 110km² of prospective intrusive complex
- Innovation: First application of advanced seismic interpretation to target blind PGE mineralisation in this district
- Analogues: Comparable geological setting to world-class PGE districts globally
- Diversification: Multiple commodity potential including PGE, nickel, copper, chromium, and cobalt
Gold Exploration Strengths
The Golden Boulder target provides exposure to established gold markets within a proven mining district:
- Location: Positioned within the established Duketon Gold Belt
- Infrastructure: Adjacent to operating mines and processing facilities
- Results: High-grade surface mineralisation consistently reported
- Structure: First-order structural controls identified through geological interpretation
Combined Value Proposition
The dual-commodity approach offers several investment advantages:
- Commodity Diversification: Exposure to both emerging PGE markets and established gold sector
- Technical Validation: Competitive EIS co-funding demonstrates quality of exploration concepts
- Infrastructure Benefits: All projects located within 40km of operating mills and major operations
- Multiple Catalysts: Ongoing drilling provides multiple near-term newsflow opportunities
Strategic Context
"This diamond drilling will be critical in defining the stratigraphic and structural controls on the high-grade gold mineralisation defined near surface," noted Matthew Keane regarding the Golden Boulder program.
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Why Investors Should Follow Great Southern Mining
GSN has positioned itself as a technically sophisticated explorer with access to large-scale, under-explored targets in proven mining districts. Moreover, the company's ability to secure competitive EIS co-funding demonstrates the quality and innovation of its exploration approach.
Key Tracking Points
Immediate Catalysts: Diamond drilling results from both Diorite Hill and Golden Boulder expected in coming months. These results represent the first deep testing of these innovative geological concepts.
Technical Innovation: First application of advanced seismic interpretation to target blind PGE mineralisation in the East Laverton district. This approach uses proven techniques from world-class PGE complexes.
Infrastructure Advantage: Strategic location of all projects within 40km of operating processing facilities and major mining operations. Consequently, this reduces potential future development costs.
Validation: EIS co-funding through competitive assessment validates both the technical merit of exploration concepts and the quality of geological targets.
Multiple Discovery Scenarios
The company's dual-commodity strategy provides investors with exposure to different discovery scenarios:
PGE Discovery Potential: Success at Diorite Hill could unlock a large-scale PGE system. For instance, this could be comparable to other significant Australian discoveries in layered intrusive complexes.
Gold Resource Growth: Deep drilling at Golden Boulder targets the structural source of known high-grade mineralisation. However, this could potentially expand the scale and grade of the gold resource.
Technical Advancement: Advanced exploration techniques being deployed could provide a blueprint for exploring similar targets. In addition, these could be applied across the company's broader project portfolio.
The Great Southern Mining diamond drilling program combines innovative exploration techniques with competitive co-funding validation. Furthermore, the strategic location within established mining districts positions Great Southern Mining as a company worth monitoring. The company offers multiple potential discovery scenarios across two strategically important commodity sectors.
Is Great Southern Mining Positioned for a Major Discovery?
With diamond drilling now underway at two high-potential targets backed by competitive government co-funding, Great Southern Mining presents a compelling dual-commodity opportunity. The company's innovative approach to PGE exploration at Diorite Hill, combined with first-time deep drilling at the high-grade Golden Boulder gold discovery, could deliver significant newsflow in the coming months. To explore GSN's strategic positioning in both the emerging PGE sector and established gold markets, and to stay updated on drilling results from these technically validated targets, visit Great Southern Mining's website for comprehensive company information and the latest project developments.
