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The Marlborough prospect comprises of Minerals Prospecting Permit application 60725.01 that covers 500km² of the Marlborough Schist Belt, a northern analogue of the Otago Schist Belt offset ~470 km along the Alpine Fault.

The Marlborough application area contains a large number of historic, shallow gold and scheelite mines. In total, the area produced 18,000 ounces of gold at an average grade of 5.3g/t. Individual mines had grades generally between 5 and 10g/t Au with up to 30g/t Au being recorded. Tungsten was mined at grades of 0.58% (Downey 1928, Williams 1965).

Marlborough Application Area and Geophysical survey boundary. Base map of geology 1:250k QMAP