Granite, Coarse-grained hard rock with crystals., Chalk, Rock that is formed from the skeletons of tiny sea animals., Marble, A rock that is used to make floor tiles and wall tiles., Igneous Rocks, Are formed when magma cools and solidifies., Examples of igneous rocks , Include basalt, granite, pumice, and andesite., Metamorphic Rocks, Formed by pressure deep under the Earth's surface, Examples of metamorphic rocks , Include quartzite, marble and slate., Sedimentary rocks , Are formed by sediment that is deposited usually as layers at the bottom of lakes and oceans., Examples of sedimentary rocks , Include limestone, sandstone, chalk and coal.

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