Magnetic property studies and magnetic surveys of the Elura prospect, Cobar, NSW

Abstract

During 1978 and 1979 the Bureau of Mineral Resources investigated the characteristics of the magnetic anomaly at Elura by a program of airborne, ground, carborne, and down-hole magnetic surveys, and laboratory magnetic measurements on core samples. The results of this work show that the magnetic anomaly at Elura is caused mainly by a remanently magnetised pyrrhotitic zone within the Elura deposit. However, near-surface magnetic sources contribute to the anomaly at low altitudes. Spectral analyses of airborne and carborne magnetic data at Elura indicate that the effects of near-surface and bedrock magnetic sources can be separated by careful attention to data acquisition and filtering.