The Northern Territory is largely underexplored in relation to nickel. The only JORC-compliant nickel resource is included as part of the polymetallic Browns deposit in the Pine Creek Orogen. However, the Territory is considered to have significant nickel potential, particularly given the widespread occurrences of mafic and ultramafic rocks in the Arunta Region and Musgrave Province, as well as extensive basalts of the Kalkarindji Large Volcanic Province.
In the Pine Creek Orogen, total resources of the Rum Jungle area deposits (Area 55, Browns, Browns East, Mount Fitch) are estimated at 84 Mt at 0.78% Cu, 0.12% Co, 0.11% Ni and 2.75% Pb. These deposits are associated with carbonaceous shale of the Whites Formation The Stanton deposit in the McArthur Basin contains a resource of 0.9 Mt indicated resources averaging 0.15% Co, 0.08% Ni, and 0.15% Cu. Mafic hosted mineralisation at Prospect D in the Arunta Region has a non-JORC compliant resource of 3.16 Mt averaging 0.56% Cu and 0.2% Ni.
Large parts of the Arunta Region have numerous mafic and ultramafic intrusive rocks with known potential for nickel-copper sulphide mineralisation. Exploration has been limited, but identification of nickel-copper sulphide mineralisation in the Harts Range area by Mithril Resources Ltd has led to the recognition of the eastern Arunta Region as an important greenfields nickel province.