METHOD FOR SEPARATION AND DETECTION OF GOLD SULPHIDEFROM BANDED MAGNETITE QUARTZITE (BMQ) OF GOASujata Dabolkar and Nandkumar Kamat
Gold (I) sulphide is the inorganic compound with the formula Au2 S. It is the principal sulphide of gold. Itdecomposes to gold metal and elemental sulphur, illustrating the nobility of gold. Recovering gold fromsulphide refractory gold ore has been an important guarantee for the sustainable development of goldindustry, while there are many challenges in the treatment of sulphide refractory gold ore, such asenvironmental pollution and low gold recovery. In this study we aimed at separating gold sulphide fromBanded Magnetite Quartzite (BMQ) of Goa. The BMQ sample wasdried, powdered, concentrated by panningmethod and subjected to magnetic separation using neodymium magnet and sieved into different fractionswith the sieve size of 250, 150, 106, 53 Î¼m. Powdered sample was tested for presence of gold sulphide byICP-AES, SEM-EDX, CHNOS Analysis methods.