Rumble’s Sidewinder project is located 80 km southeast of Mt Magnet, Western Australia. The Sidewinder project comprises three Granted tenements E58/484, E58/491 and E59/2119 covering an area of 96 km2. The regional geology is dominated by the Windimurra Complex, which is a large differentiated layered ultramafic to mafic intrusion. It is the largest layered intrusive body of its type in Australia. Many of these types of complexes nationally and globally host economically significant deposits of Ni-Cu sulphides.
Rumble has acquired valuable technical data containing drilling, surface geochemical sampling, mapping and both ground and airborne geophysical survey data. Previous exploration identified significant nickel and copper sulphide mineralisation and multiple other targets that require further investigation
Previous historical exploration included a regional airborne electromagnetic survey (ReptEM), airborne magnetic and ground gravity surveys, which identified a number of potential targets within the current E59/2119 licence area.
Further exploration for nickel and copper was carried out by Flinders Mines Ltd (ASX: FMS) between 2009 and 2013. Work completed by Flinders Mines included surface sampling, geological mapping, ground Electromagnetic (EM) surveying and airborne EM surveying (VTEM) and drilling. Exploration drilling during 2012 and 2013, comprised seven Reverse Circulation (RC) holes (CPRC001 – CPRC007) and three diamond drill holes (PCPDD001 – CPDD003) targeting two discrete airborne electromagnetic (VTEM) targets, CG02 and CG39 – see figure 3 and 4.
The drilling intersected a layered sequence of gabbro, leucogabbro and pyroxenite, with the ultramafic (pyroxenite) units hosting sulphide mineralisation of varying intensity, from disseminated to massive. Sulphide composition is recorded as being pyrrhotite dominant, with varying quantities of chalcopyrite, pyrite and pentlandite