Exploration for Archaean lode-style gold and Hiltaba Suite granite-related hydrothermal Cu-Au in two licence sub-areas near Tarcoola targeted Archaean greenstone lithologies interpreted from aeromagnetic data, Mesoproterozoic intrusive-associated...
Exploration for Archaean lode-style gold and Hiltaba Suite granite-related hydrothermal Cu-Au in two licence sub-areas near Tarcoola targeted Archaean greenstone lithologies interpreted from aeromagnetic data, Mesoproterozoic intrusive-associated alteration systems, and sites of historic gold mining. Regional and detailed calcrete sampling, helicopter and fixed-wing aeromagnetic surveys, and ground magnetic and IP surveys identified several prospects which were further tested by RAB, aircore and percussion drilling (643 holes, total 26 055 m), and one diamond tail (in AR4, of 55.5 m). Other techniques applied included an orientation mobile metal ion survey, rock chip sampling, costeaning over historic workings, petrological examinations of medium to high grade metamorphosed and altered ultramafic, granitic and banded iron formation drill chips, and radiometric U/Pb age dating of the granite recovered in the new drill core, by zircon evaporation methods. Whilst the calcrete sampling has defined coherent gold anomalies throughout the licence, the drilling done to date has generally failed to give encouragement for significant bedrock gold mineralisation of the size and tenor required by MIM.
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