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A '''hydrothermal vein''' is a [[fracture]] in [[rock]]s in which [[mineral]]s have been deposited from hot [[magma]]tic emanations rich in [[water]].
A '''hydrothermal vein''' is a [[fracture]] in [[rock]]s in which [[mineral]]s have been deposited from hot [[magma]]tic emanations rich in [[water]].
==Sources==
==Sources==