Induced Polarisation Surveys for Sulphide Bearing Gold Lodes in the Kolar Gold Field, Kolar District, Karnataka

Induced Polarisation (Time Domain) surveys were carried out in different blocks of the Kolar Gold Fields for the delineation of sulphide bearing auriferous lodes. In the Mysore Mine area (McTaggart and Edgar Shaft area) three zones of I. P. anomaly were outlined with chargeability highs of the order of 10 to 20 milliseconds with a corresponding fall in the apparent resistivity values by about 100 ohm-metres, Exploratory trenches over the eastern anomaly zone exposed the mineralised band which helped in fixing borchole locations. A strike length of about 250 metres bctween Mysore Mine magazine and the black rock dumps has proved to be interesting as a possible economic potential zone for gold.