Igneous Rock: formed from magma cooling and crystallizing, may have large crystal grains, can be intrusive or extrusive, Metamorphic Rock: formed from a rock experiencing extreme heat and pressure, may have banding, Sedimentary Rock: formed from small rock pieces compacting and cementing together, may have fossils, All Rock Types: can turn into metamorphic, can melt into magma, can weather into sediment,

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