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1 Igneous Rocks Igneous Rocks Definition of Igneous Rocks Definition of Igneous Rocks Igneous rocks form from cooling and Igneous rocks form from cooling and crystallization of molten rock crystallization of molten rock- magma magma Magma Magma – molten rock within the Earth molten rock within the Earth Lava Lava – molten rock on the Earth molten rock on the Earth’ s surface s surface Igneous rocks form the framework for the Igneous rocks form the framework for the earth earth’ s crust s crust
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