Granite is an igneous rock, specifically an intrusive (plutonic) igneous rock that forms when magma cools slowly beneath Earth’s surface.

What kind of rock granite is

  • Granite is classified as an intrusive igneous rock because it crystallizes from magma that cools and solidifies underground.
  • Its slow cooling allows large, visible crystals to form, giving granite its coarse-grained texture.

Key features of granite

  • Granite is mostly made of quartz and feldspar, with smaller amounts of mica and amphibole minerals.
  • It is usually light-colored (white, pink, or gray) with darker mineral grains scattered through it, and it is very hard and durable.

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