Challa Gold Project.
The Project
Platina’s 100% owned Challa Gold Project is located in-between the prolific Mt Magnet and Sandstone gold districts in Western Australia, 500km north-east of Perth.
The project includes two high quality exploration licence applications covering 293km².
The Sandstone province has produced over 1.3 million ounces of gold from numerous underground and open pit mining operations while Mt Magnet produced over 6 million ounces since discovery in 1891. Nearby, the Youanmi Gold Mine produced 670,000 ounces of gold throughout its lifetime and is currently the focus of new resource drilling of high-grade gold lodes.
Challa lies within an area defined by more than 50 gold occurrences, on a previously unrecognised gold trend, the Paynesville Gold Trend, which intersects and interacts with the Challa Shear, a classic Yilgarn Craton structural setting for million plus ounce gold deposits.
Challa situated on major structure associated with multiple gold prospects
Favourable greenstone host rocks. Hydrothermal alteration along zones of major structural dislocation.
New aircore drilling campaign in Q4 2024 comprising 40 holes for a total of 2,000m. The aim of the drilling is to define and prioritise bedrock targets for future reverse circulation drilling.
Geology
The tenements fall within the Murchison Domain of the Youanmi Terrane in the Yilgarn Craton and cover part of the 2.81Ga Meeline Suite of the Windimurra Igneous Complex. Archaean mafic-ultramafic igneous intrusions and associated dykes and sills comprise about 40% of the greenstones in the northern Murchison Domain, and the largest of these layered intrusions is the predominantly gabbroic Windimurra Igneous Complex (Ivanic et al. 2010).
The Windimurra Igneous Complex lies immediately west of a major crustal domain boundary between the Murchison Domain and the Southern Cross Domain within the Youanmi Terrane. This terrain boundary is marked by the Youanmi Fault (Champion and Sheraton, 1996); one of an array of craton-scale structures that includes the Challa Shear. Later reactivation of these structures has resulted in the dissection of the igneous complexes and greenstones.
The Challa Shear runs along the western side of the Windimurra Igneous Complex, were gabbroic rocks are in faulted contact with granite and greenstone. The Challa Shear is a regional-scale structure that forms part of the gold-controlling structural architecture of the Youanmi Terrain .
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