Upgrading of Sillimanite and Garnet Ores to Improve Their World Market Competitiveness

3 Abstract: Sillimanite is industrial mineral used in the manufacture of refractory bricks and high- temperature crucibles, as abrasive wear. Large well crystalline sillimanite is recorded in sillimanite- kyanite pelitic and semipelitic schists located at eastern of the the northernmost part of dome of W adi Hafafit Culmination between latitudes 24° 44' 33" and 24° 51' 30" N and longitudes 34° 26' 50" and 34° 33' 45° E. The Migif-Hafafit gneisses and schists comprise psammitic and migmatitic gneisses and pelitic and semipelitic schists which contains the sillimanite refractory materials. Such rock forms a zone of 20-60 m in width and 4.5 km in length. The scope of work is application of mineral processing methods to concentrate the refractory minerals chiefly sillimanite from this Hafafit sillimanite pelitic and semipelitic schist. Besides, these schists are also garnet-bearing and is involved during beneficiation processes. The studied area is occupied by the Migif-Hafafit gneisses and schists.