Question

2. Where do minerals occur in igneous and metamorphic rocks?​

Answer 1

Explanation:

) In igneous and metamorphic rocks:

Minerals may occur in the cracks, crevices, faults and joints. The smaller occurrences are called veins and the larger one are called the Iodes. In most of the cases, they are formed when minerals in liquid/molten and gaseous forms are forced upwards 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.

b) In sedimentary rocks:

In these rocks, minerals occur in beds or layers. Coal, iron ore, gypsum, potash salt and sodium salt are the minerals found in sedimentary rocks.

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Answer 2

minerals in igneous and metamorphic rocks:

• in igneous and metamorphic rocks,minerals are found in cracks,fault and joints.
• the smaller occurrences are called viens and the larger ones are called as loads.
• they are cool and solidify as they rise.
• in most cases,they are formed when minerals in liquid ,molten and gases form are forced upward through cavities towards the earth surface.
• major metallic minerals like tin ，copper,zinc,lead etc are obtained from veins and loads.

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