igneous rocks are also called as primary rocks. give reasons
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Igneous rocks are known as primary rocks as they are formed through the cooling and solidification of magma or lava. The magma can be derived from partial melts of existing rocks in either a planet's mantle or crust. All other rocks are derived from them, so they are also called as parent rock.
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Igneous rocks are the rocks which are the original/initial rocks, as they were formed first. Igneous rocks rocks are referred to as the primary rocks, because they represent the rocks which directly or indirectly provided materials for the formation of other types of rocks.
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