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.

Igneous 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 rock is formed by the cooling of molten rock ... causing the minerals that compose the stone to re-form into new crystals. Sedimentary rock is formed by the accumulation of minerals and other ...