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Igneous
,→About Igneous Rocks
: When the [[magma]] is trapped underground it [[freezing|freezes]] slowly and this makes very large [[cyrstal]]s in the rock. This is called [[intrustive]] rock.
: When the [[lava]] comes out of the [[volcano]] it cools down and [[freezing|freezes]] quickly making small [[crystal]]s. This is called [[extrusive]] rock.
: [[Igneous]] rocks have large interlocking [[Grain (Rock)|grains]].
===Examples===