Great Southern Mining Limited reported significant gold intercepts from its Western Australian and Queensland projects during the December 2025 quarter, alongside securing up to A$337,500 in government co-funded drilling grants.
- 8,057m air-core drilling at Amy Clarke with promising gold assays
- 5,234m reverse circulation drilling at Golden Boulder extends mineralisation
- Diamond drilling at Edinburgh Park reveals geological potential despite no economic assays yet
- Secured up to A$337,500 in Exploration Incentive Scheme grants for Duketon and East Laverton projects
- Cash position stands at A$3.01 million at quarter end
Exploration Momentum at Duketon Gold Project
Great Southern Mining Limited (GSN) has advanced its exploration efforts significantly in the December 2025 quarter, focusing on its flagship Duketon Gold Project in Western Australia. The company completed an extensive 8,057-metre air-core drilling program at the Amy Clarke prospect, revealing encouraging gold mineralisation over a 4.7-kilometre strike. Notable intercepts include 2 metres at 23.9 grams per tonne (g/t) gold from 10 metres depth and 17 metres at 1.4 g/t gold, highlighting the prospect’s potential for resource expansion.
Simultaneously, a 5,234-metre reverse circulation (RC) drilling campaign at the Golden Boulder prospect has extended known mineralised lodes along a 650-metre strike within a broader 3.7-kilometre structural trend. Early assay results from 27 holes include high-grade intercepts such as 6 metres at 6.7 g/t gold, including 1 metre at 34.5 g/t, underscoring the prospect’s continuity and depth potential. The remaining assay results are anticipated by mid-February 2026, which could further enhance the resource outlook.
Queensland’s Edinburgh Park Project Shows Geological Promise
In Queensland, GSN’s diamond drilling at the Edinburgh Park Project continued with six holes completed across several targets. While assays from the initial three holes at Leichhardt Creek did not reveal economic concentrations, the presence of quartz-pyrite veining and hydrothermal alteration supports the potential for intrusive-related gold systems. The company plans to resume drilling at the high-priority Mt Dillon IP target after the wet season, aiming to test a significant chargeability anomaly that may indicate deeper mineralisation.
Additional targets such as Molongle and Megan Veins are also under active investigation, with assays pending. These prospects exhibit geological features consistent with epithermal gold systems, including advanced argillic alteration and gold-bearing quartz veins, which could translate into future drill success.
Strategic Government Funding and Financial Position
GSN secured up to A$337,500 in co-funded drilling grants from the Western Australian Government’s Exploration Incentive Scheme (EIS), supporting drilling at both the Duketon Gold Project and the East Laverton Nickel-Gold Project. Notably, up to A$220,000 is allocated for deep diamond drilling at the Ogilvies prospect within Golden Boulder, targeting first-order structural shears known to host significant gold deposits in the region.
Financially, the company ended the quarter with a cash balance of A$3.01 million, providing a solid foundation for ongoing exploration activities. No new equity was issued during the period, and the company maintains capacity for future capital raising if required. Performance rights and options remain in place as part of the company’s incentive structure.
Looking Ahead
Great Southern Mining is poised to build on its recent drilling success with planned RC drilling at Amy Clarke in 2026 and the continuation of diamond drilling programs at Edinburgh Park and Golden Boulder. The integration of new geological data and government-supported drilling will be critical in advancing these projects towards resource definition and potential development. Investors will be watching closely as assay results and exploration updates unfold in the coming months.
Bottom Line?
With promising drill results and strategic funding secured, Great Southern Mining is well-positioned to unlock value across its key gold projects in 2026.
Questions in the middle?
- Will upcoming assay results from the southern Golden Boulder holes confirm further extensions of mineralisation?
- How will the planned deep diamond drilling at Ogilvies impact the understanding of the Rosemont Shear’s gold potential?
- What are the implications of the geological findings at Edinburgh Park for Gold Fields’ earn-in strategy and future exploration?