الفلسبار عمليات تعدين
الفلسبار عمليات تعدين. الفلسبار عمليات تعدين. DMME Division of Geology and Mineral Resources Feldspar. Feldspar is one of the most abundant minerals in the earth''''s crust. . In ceramics, feldspar is used as a flux to lower melting temperatures during the firing process. .