Bryah Basin project lies within the Gascoyne region of Western Australia, approximately 90km north of Meekatharra.
Bryah Basin region is prospective for copper-gold and gold mineralisation and is the focus of several mining operations, including Sandfire Resources’ high-grade DeGrussa copper-gold project and Westgold Resources multi-million ounce Fortnum gold project.
Meekatharra, Western Australia
The Bryah Basin Project lies at the centre of the basin and is predominantly surrounded by Sandfire Resources Joint Venture tenements on all sides. Sandfire are actively exploring the region, funding several recent farm-in agreements on surrounding JV tenements, which like Alloy are prospective for high-grade Copper-Gold mineralisation akin to that at Sandfire’s flagship DeGrussa project.
Historical exploration has been limited in this project area, mainly due to the extensive transported cover associated with the Murchison River basin, however historical data illustrates favourable geology for both gold and copper-gold mineralisation. The project is underlain by the same host of the high-grade DeGrussa and Monty mineralisation, the Narracoota volcanic sequence.
Extensive transported cover across the project limited historical exploration with little to no systematic exploration occurring at Bryah Basin since the mid 90’s. Early explorers in the area completed the majority of work in the central and western parts of the project with much of the RAB drilling being ineffective.
After the discovery of the high-grade Degrussa VMS deposit by Sandfire Resources in 2008, Rubianna Limited explored the eastern part of the project area closer to DeGrussa. Drilling in the area was restricted to shallow air-core at a maximum 100m x 200m spacing and a copper-gold anomaly over a 1km x 0.7km area that remains open to the east for a further 1.4 kilometres. Mineralisation remains poorly understood due to the lack of deep drilling; however a hard dark black-red siliceous unit was reported that is promisingly can associate with a deeper weathering zone.
Future Exploration Activities
The Company plans to refine the key targets after a full compilation of historical data and thorough interpretation of the known anomalous copper and gold prospect areas. Follow up works on priority targets will then commence including; infill soil sampling, air-core drilling. Identified targets will then be considered for ground based electromagnetic surveying and targeted deeper drilling.