Arika Resources has won a $211,000 government grant to fund deep diamond drilling targeting high-grade extensions at the historic Cosmopolitan Gold Mine in WA’s Kookynie district. The drilling aims to unlock a large, underexplored mineral system with parallels to major regional deposits.
- Secured $211K Exploration Incentive Scheme co-funded drilling grant
- Two 600m diamond drill holes planned to test deep extensions
- Targets identified via 3D modelling and independent technical review
- Cosmopolitan and Altona mines historically produced over 400,000oz
- Potential large-scale mineralised system analogous to Sons of Gwalia
Government Boost for Deep Drilling at Historic Cosmopolitan Mine
Arika Resources (ASX:ARI) has secured a $211,213 co-funded drilling grant from the Western Australian Government’s Exploration Incentive Scheme (EIS) to test high-priority extensional targets at its Kookynie Gold Project. The funding will support two 600-metre diamond drill holes designed to probe down-plunge extensions beneath the historic Cosmopolitan and Diamantina gold lodes, which remain largely untested below 300 metres depth.
3D Modelling Unlocks New Targets in a Storied Gold District
The targets emerged from a detailed independent review and 3D reconstruction of the Cosmopolitan deposit and associated underground workings by ERM (formerly CSA Global). This work, in collaboration with Arika’s technical team, has revealed a large, complex mineralised system comprising multiple parallel north-south trending structures and second-order northeast-trending linking faults. These structural intersections are interpreted to control high-grade shoots that remain open at depth and along strike.
Arika’s Managing Director Justin Barton highlighted the significance of the modelling, saying it allows the company to better understand the controls on deposit geometry and high-grade zones. He drew parallels between the Cosmopolitan-Altona-Puzzle system and world-class regional deposits such as Sons of Gwalia and Tarmoola near Leonora, both owned by peers Genesis Minerals (ASX:GMD) and Vault Minerals (ASX:VAU). Sons of Gwalia, for example, produced over 6 million ounces and continues to be extended by deep drilling well below historical workings.
Historical Production and Untapped Depth Potential
The Cosmopolitan and Altona mines were among the highest-grade producers in the Kookynie district during the late 19th and early 20th centuries, with reported production of approximately 360,000 ounces at 15 g/t gold and 89,000 ounces at 30 g/t gold respectively. Mining ceased around 1914 due to technical challenges including groundwater management and the onset of World War I. Crucially, neither deposit has been subjected to systematic modern exploration or deep drilling beyond the old workings.
Arika’s planned drilling will test for depth extensions of the mineralised shoots identified by the 3D model, targeting dilational flexures where second-order faults intersect the main ore-hosting structures. The project area is located within the prolific Northeastern Goldfields of Western Australia, close to major gold producers such as Sunrise Dam and Wallaby.
Strategic Positioning in a High-Grade Gold Province
The Kookynie Gold Project, where Arika holds an 80% interest and is moving to 100% ownership, is situated in the Laverton Greenstone Belt, a part of the Yilgarn Craton known for hosting multi-million-ounce gold deposits. The project tenure covers the two largest and highest-grade historic mines in the district, positioning Arika well to capitalise on the significant exploration upside.
Recent company activity at Arika’s nearby Yundamindra Gold Project has also demonstrated thick, high-grade gold zones with ongoing drilling campaigns expanding mineralisation at depth and along strike, underscoring the company’s technical momentum in the region. These developments build on Arika’s strategy of leveraging detailed geological modelling and targeted drilling to unlock value in well-endowed gold systems thick high-grade gold zones and high-grade gold zones at Pennyweight Point.
Next Steps and Exploration Outlook
Drilling is scheduled to commence in the coming months, subject to receipt of all statutory approvals. The two deep diamond holes will test the Cosmopolitan-Diamantina granite-hosted quartz lodes approximately 200 metres below the deepest historical workings, targeting extensions that could substantially increase the known mineralisation footprint.
Beyond the immediate drilling, Arika has identified a series of northeast-trending second-order linking structures between the Cosmopolitan and Altona lodes, known as the Scotchman, Irishman, and Welshman trends. These have not been effectively drill tested and represent additional high-priority targets for future exploration.
Bottom Line?
Arika’s government-backed deep drilling at Kookynie could unlock significant extensions to a historically prolific gold system, but results and regulatory timelines remain key near-term catalysts.
Questions in the middle?
- Will the deep diamond drilling confirm significant down-plunge extensions beneath Cosmopolitan and Diamantina?
- How will exploration results influence Arika’s plans for resource estimation and potential development?
- What potential lies in the underexplored northeast-trending linking structures between major lodes?