Copper Mineralisation in Karnataka, India

The known occurrences of copper ore in Karnataka are grouped under five main groups (1) those associated with ultrabasic complexes (2) those associated with quartzites and quartz schists of Lower Dharwars (3) those associated with shear zones in the greenstone schists-volcanic assemblages comprising pillow lavas, agglomerates and tuffs (4) hydrothermal lode deposits and (5) those associated with major fault zones.

Targets for further search for copper are indicated to be the layered ultrabasic complexes, quartzitic sediments of Lower Dharwars, shear zones in submarine volcanic assemblages of andesitic composition, metamorphosed shales and graphitic schists, brecciated and mylonitized zones associated with major faults of great horizontal and vertical extent.