Slate: Can be cut thinly, waterproof , Often usted for roofing, Marble: Colorful and hard, Can be cut into shapes, Can be used for ornaments, Granite: Very hardwearing , Used for kitchen worktops, Can be polished, Chalk: Powdery, Used to write, Soft, Laterite: Porous, Slightly permeable red rock, Used to build walls, Sandstone : Hard, Different colors, Used to build columns,

Properties and uses of Rocks

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