The Golden Mile South Project is located within the Kalgoorlie region of the Eastern Goldfields. Its contiguous 100 km2 (25 km2 of which is under application) tenement package is approximately 5 km southeast of the Kalgoorlie Super Pit (+70Moz Au) and 5 km north of the New Celebration/Jubilee gold mine (~4 Moz Au).
Easy access to the infrastructure and facilities of the Kalgoorlie region, makes exploration at the Golden Mile South Project relatively cheap by global standards.
The Golden Mile South Project covers rock packages that are affected by three major structures; the Boulder-Lefroy Fault, the Gidji Fault and the Boorara Shear. All three structures host a number of major gold deposits.
It is considered that the Golden Mile South Project is prospective for lode-style mineralisation ranging from major large scale deposits in the region, such as the Golden Mile, Mt Charlotte, New Celebration/Jubilee, and Kanowna Belle, to narrow high-grade vein-style deposits typified by Kundana, Frog's Leg and Binduli.
The tenement area is almost entirely covered with a veneer of soils underlain by a variable thickness of depostied clays and sands.
The interpreted geology of the Golden Mile South Project tenements is dominated by metamorphosed sedimentary rocks and felsic volcanic/intrusive rocks of the Black Flag Group, together with lesser basalts and ultramafics and minor dolerite.
A large magnetic anomaly in the northeast section of the Golden MIle South Project area is potentially due to hydrothermal magnetite development, which may be linked to faults and to a large hidden intrusion at depth. Intrusions of this nature have been proposed as the source of gold mineralising fluids within the Eastern Goldfields.
Portions of the Golden Mile Dolerite and associated ultramafic units and sediments, as seen within the Kalgoorlie Super Pit, may be present at depth in the northwest portion of the Golden MIle South Project. Thick units of dolerite were identified in historical Western Mining Corporation ("WMC") deep diamond drilling just 1.5 km to the northwest of the tenements, and published geological maps identify these units further south at New Celebration and St Ives.
There is also work done that indicates the Kalgoorlie Super Pit structural trend may continue into the Golden Mile South Project area, as shown by seismic, gravity and magnetic profiling completed by Geoscience Australia.
Orrex is continuing its analysis of the data collected to generate a deep exploratory drill programme targeting the Golden Mile Dolerite.