How do minerals occur in igneous and metamorphic rocks?

Minerals occur in the cracks, crevices, faults or joints in igneous and metamorphic rocks. They are usually formed when minerals in liquid/ molten and gaseous forms are forced upward through cavities towards the Earth’s surface. Eventually, they cool and solidify as they rise.

NOTE – The formation of minerals is subject to various conditions, physical as well as chemical. Minerals are formed of igneous and metamorphic rocks as well as sedimentary rocks.