The Mt Leyshon magnetic anomaly

Abstract

The Mt Leyshon magnetic anomaly is an intense magnetic low located to the south of the Mt Leyshon Gold Mine. Recent investigations including deep drilling, detailed core logging, petrophysical measurements and magnetic modeling indicate the source of the anomaly to be biotite-magnetite alteration. Geological relationships suggest that this alteration is an early hydrothermal phase of the breccia complex whereas the gold mineralisation is interpreted as post dating emplacement of the breccia complex.