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The Mangalur greenstone belt is 25km long and 4 to 5km wide, located 40 km north of the currently producing Hutti gold mines. It is composed of metamorphosed basalt, gabbro, ultramafics, felsic volcanic rocks and coarse clastic sedimentary units like at Hutti, Kolar and Sonakhan belts. The rock formations are invaded all round by granites. Hence, the geology is ideal for the search of gold deposits.
Samples from DGML’s Mangalur gold mine dumps at Mukangavi analysed 6.1 and 18.9 g/t gold. Earlier investigations by the GSI and development work done by HGML have revealed a gold resource of 22,645 ounces between fourth and 10th level (up to 300m depth) in this currently inactive mine. Average grade of the ore is reported to be 7.8g/t which is attractive for an underground mine.