Question

how are minerals formed in igneous and metamorphic rocks

Answer 1

In igneous and metamorphic rocks, minerals occur in cracks, crevices, faults and joints. They are formed when minerals in liquid or molten and gaseous forms are forced upward through these weak zones (cavities) towards earth’s surface. They cool and solidify as they rise towards the surface. Tin, copper, zinc, lead and diamond etc. are various minerals found in igneous and metamorphic rocks.

Answer 2

minerals occur in igneous and metamorphic rocks in the cracks, crevices, faults or joints. the smaller occurences are called veins and the larger occurences are called lodes. in most cases they are formed when minerals in liquid / molten and gaseous forms are forced upwards through the cavities. they cool and solidify as they rise.

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