ONUFRIENOK, VICTOR, SAZONOV, ANATOLY. "FINDING SPECIES OF IMPURITY IN THE MINERAL ON ITS PHYSICAL PROPERTIES." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 13th SGEM GeoConference on SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING (2013): 47 - 54 pp. https://doi.org/10.5593/sgem2013/ba1.v1/s01.007