Igneous rocks close igneous rockIgneous rocks are ... As the magma cools, mineral crystals will begin to grow. These crystals will grow and interlock to form a hard crystalline rock.
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What are thundereggs? The rare, chalcedony-filled rocksIgneous rocks form from the solidification of molten ... The rate of cooling affects the size of the crystals that form: slower cooling beneath the surface allows for larger crystals, while ...
Igneous rocks contain randomly arranged interlocking crystals. The size of the crystals depends on how quickly the molten magma solidifies and can form extrusive igneous rocks or intrusive igneous ...
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