Primestones® Granite, Quartz, Marble and More
The colour varies from dark gray, greenish gray, purple gray to black. The specific gravity is 2.6 to 2.7. Compressive strength varies from 100 to 200 N/mm2. They are used as roofing tiles, slabs, pavements etc. LATERITE. It is a metamorphic rock. It is having porous and sponges structure. It contains high percentage of iron oxide.
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