
QUARTZ & OTHER SILICA MINERALS Indian Minerals Yearbook 2020 (Part- III : Mineral Reviews) ... MINISTRY OF MINES INDIAN BUREAU OF MINES Indira Bhavan, Civil Lines, NAGPUR – 440 001 PHONE/FAX NO. (0712) 2565471 PBX : (0712) 2562649, 2560544, 2560648 E-MAIL : [email protected] ... Pradesh is of a very high quality. …