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G
Grain
The striations of the stone. In granite, the grain is made up of crystals that formed as the contributing magma cooled. The slower the cooling, the larger the crystals.
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Granite
Granite is formed when magma, or molten rock, is forced into crevasses in other rocks in the earth’s crust, typically deep with mountain ranges. The material, generally made up of quartz, feldspar and mica, cools and crystallizes underground. Granite can be pink or gray. It takes its color from the composition of the feldspar. Granite is most commonly used in building materials.
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