How are minerals formed in igneous and metamorphic rocks?
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The minerals in igneous rocks are formed from the magma after the cristallisation temperature is reached. In metamorphic rocks, minerals are altered or recrystallised from the existing rock minerals because of the effect of heat and temperature. This happens because all rocks turn into metamorphic rocks under great heat and pressure. The basic source of all the minerals is the hot magma which is found in the interior of the earth.
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The minerals in igneous rocks are formed from the magma after the cristallisation temperature is reached. In metamorphic rocks, minerals are altered or recrystallised from the existing rock minerals because of the effect of heat and temperature.
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