A rock formed when melted rock cools and hardens. Igneous rock. Igneous rock is a type of rock that forms from the cooling and solidification of molten material called magma or lava.
Igneous Rock: A rock formed when melted rock cools and hardens. Igneous rock. Igneous rock is a type of rock that forms from the cooling and solidification of molten material called magma or lava.
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