Abstract
Weathered granitic rocks from Al-Madina Al-Munawwarah area were experimented for the preparation of cheap technical glassceramic 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 has been found that an increasing content of the weathered granitic rocks in the batch constituents, results in increased bulk crystallization.
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