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The Hale River Project is made up of licences EL 27962, Hale River and EL 28065, Martingale. The licenses are centered 170 km east-southeast of Alice Springs in the southeast Northern Territory. The primary objective of the exploration has been rare earth elements, with secondary targets copper and gold.
EL 27962 Hale River licence is underlain by the Casey Inlier composed of older mid Proterozoic mafic and felsic gneiss of the Arunta Province. Deformed ultramafic and mafic rocks are common. The Arthur Popes Prospect within EL 27962 contains up to 27% copper from small selected hand samples, together with up to 1.66% Rare Earth Oxides. Mineralisation is contained within multiple 1-3 metre thick carbonate rich veins that can be tracked for up to 3 kilometres.
The key targets identified from a reconnaissance survey included outcropping carbonate dykes which are believed to be the source of the REO’s. Sampling shows the dykes appear not to be contaminated with radioactive thorium and uranium which would otherwise downgrade their economic significance. Petrology on conducted on two dykes on the Hale River prospect suggest that theyconsist of secondary epithermal fine grained granular quartz after possible coarse grained carbonate. This suggests that there will be no thorium and uranium contamination and that a potential new province of REO’s in the Northern Territory has been identified.
EL 28065 Martingale, shares the western border of the Hale River licence and is underlain by mid Proterozoic basement inliers of high grade mafic and felsic gneiss of the Arunta and Warumpi Province. These inliers are known together as the Casey Inlier. The basement contains deformed ultramafic and mafic boudins.
Unconformably overlying the basement is the Neoproterozoic Heavytree quartzite which forms flat topped plateaus (Frew, 1968).
A number of dark coloured dykes are visible around the plateau, and strike to the east-northeast. No reference to these dykes has been previously published.
A siliceous (quartz rich) sample collected by the Northern Territory Geological Survey contained 7.99% copper. No drilling by previous explorers is reported on these indications of copper mineralisation.