The Doolgunna Project is located within the Bryah Basin of Western Australia, approximately 125km north of Meekatharra.
The Doolgunna Project is prospective for Volcanic Massive Sulphide (VMS) copper and gold mineralisation and is the focus of several mining operations, including Sandfire Resources’ DeGrussa copper-gold project which is the highest grade operating copper mine in Australia.
Meekatharra, Western Australia
The Doolgunna Project is located along the northern edge of the basin and contains what is now interpreted as the Karalundi formation, the same formation that hosts the nearby DeGrussa copper-gold mine. The project is predominantly surrounded by Sandfire Resources controlled tenements on all sides with Sandfire actively exploring the region and funding several recent farm-in agreements.
Historical exploration has been limited to the south-eastern region of the project, due to the now confirmed misinterpretation of the geology in the area. Due diligence carried out by Strickland Metals has confirmed that geological, geochemical and geophysical data supports the potential of a western copper soil anomaly and associated outcropping copper gossan to be a potential DeGrussa-style discovery.
The basin is host to several VMS deposits of copper and gold formed during early stage volcanism, such as the Horshoe Lights deposit and the more recently discovered Degrussa and Monty deposits currently the highest grade copper mines in Australia, operated by Sandfire Resources Limited. The Doolgunna project is located only 30 kilometres from the DeGrussa mine with Sandfire holding tenements and joint ventures that adjoin the Project.
Strickland Metals recent due diligence of the project has highlighted the presence of the previously misinterpreted Karalundi Formation sedimentary rocks, the same host of Sandfire’s high-grade DeGrussa deposits. This along with a large continuous 2.4km long conductor projected beneath an outcropping copper gossan anomaly indicates the most significant discovery of ‘VMS’ style sulphide mineralisation within the Bryah Basin in the last 10 years.
Very little work has been done on the Doolgunna Project since the discovery and definition of the DeGrussa copper-gold deposits in 2009. Critical knowledge on the formation of these deposits is now in the public domain and suggests that models have changed from those being applied back in 2010. The key change has been the recognition of the lower Bryah Basin Karalundi Formation sedimentary rocks as being the principal host to the DeGrussa deposits.
Peak Resources previously explored the tenements in 2007-2010, mapping that there was only Peak Hill Schists below the Narracoota Volcanics within the Licence and that the Karalundi sedimentary rocks were not present.
Other published data by Alchemy Resources in 2008-2011 who held adjoining ground to the south, had mapped at least some Karalundi Formation below the Naraccota Formation in the area, however extensive transported cover meant there was large uncertainty of the western extent of this unit.