Question

How are minerals formed in igneous and metamorphic rocks? ​

Answer 1

Answer:

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.

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Answer 2

Answer :

In igneous and metamorphic rocks, minerals may occur in the cracks, crevices, faults or joints. The smaller occurrences are called veins and the larger are called lodes. In most cases, they are formed when minerals in liquid, molten and gaseous forms are forced upward through cavities towards the earth’s surface. They cool and solidify as they rise. Major metallic minerals like tin, copper, zinc and lead etc. are obtained from veins and lodes.

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