TY - CPAPER AU - Anatoly Mashukov TI - VARIATIONS OF THE NATURAL SULFIDES COMPOSITION T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; SGEM2012 12th International Multidisciplinary Scientific GeoConference PY - 2012 DO - 10.5593/sgem2012/s01.v1046 PB - Stef92 Technology ER -