ABSTRACT
Occurrence of vein type magnesite and scheelite as well as bands of talc was found at the western termination of the Bhavani lineament forming a part of the Moyar-Bhavani shear zone. Gold in association with pyrite and chalcopyrite occurs along the contacts of quartz veins with amphibolite. The major rock types of the zone, hornblende gneiss, quartz-biotite schist and amphibolite, are mylonitised by ductile shearing. The metamorphosed mafic and ultramafic rocks show geochemical derivation from tholeiitic basalt. Structural analysis reveals that the mineralisation, which was facilitated by fractures, is post-tectonic.
