What is Vein in Geology?

Submitted by: Muhammad
Mineral which may fill or comprise a crack in a rock, or masses of rock which occupy fissures in other rocks. Veins may have originated in many different ways and can present a great variety of forms and structures. They are often classified in three groups:
(i.) veins of igneous rock,
(ii.) of sedimentary, and
(iii.) of minerals deposited by water or by gases.
Submitted by: Muhammad

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