As per gold investigations carried out by GSI in various parts of Andhra Pradesh, gold occurrences have been reported from the Ramagiri gold field, Penakacherla gold field, Jonagiri Schist Belt, Bisanattam to the south of Chigargunta - Bisanattam gold belt.
GSI has an estimated resource of 3.467 million tonnes of ore averaging 4.0 - 6.22 g/t Au in the Chigargunta area.
After the implementation of the MMDR Act, 2015, the geological reports on Chigargunta and Bisanattam Gold Mines Kolar Schist Belt Chitoor District, Andhra Pradesh have been handed over to the Andhra Pradesh government.
As per resource estimates in these two blocks, the resource estimated in Chigargunta Mine-1 is 1.6573 million tonnes of ore with an average of 5.20 ppm gold and the total resource estimated in Chigargunta block is 2.04 million tonnes with an average of 5.73 g/t up to 5th level (Chigargunta Mine 1 & 2).
The resource estimate in the Bisanattam block is 173478 tonnes of ore with an average grade of 4.70 g/t.
This information was given by Union Minister of Coal, Mines and Parliamentary Affairs Pralhad Joshi in a written reply in Rajya Sabha on Monday.