TY - CPAPER AU - TUGBANUR OZEN TI - CHEMICAL AND MINEROLOGICAL CHARACTERIZATIONS OF THE OLTU STONE (TURKISH BLACK AMBER), ERZURUM, TURKEY T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 13th SGEM GeoConference on SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING PY - 2013 DO - 10.5593/sgem2013/ba1.v2/s04.004 PB - Stef92 Technology ER -