TY - CPAPER AU - Mohamed G. Shahein TI - MARWIT EL-SWEIQAT QUARTZ DEPOSITS- QUALIFICATION AND TECHNICAL APPLICATIONS IN HI-TECH INDUSTRIES T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 14th SGEM GeoConference on SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING PY - 2014 DO - 10.5593/sgem2014/b11/s1.024 PB - Stef92 Technology ER -