Abstract
Weathered granitic rocks from Al-Madina Al-Munawwarah area were experimented for the preparation of cheap technical glass-ceramic materials. The weathered granitic rocks were about 53.17 wt% of the batch constituents, depending on the composition.The batches were melted and then casted into glass, which was subjected to heat-treatment to induce crystallization.The resulting glass-ceramic materials were mainly composed of diopside, anorthite and wollastonite and mullite, exhibiting fine grains and uniform texture. It
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