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The iron in gangue does not dissolve in aqueous |
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Answer» aration of mineral from gangue is known as mineral processing, mineral dressing, or ore dressing. It is a necessary, and often significant, ASPECT of mining. It can be a complicated process, depending on the nature of the minerals involved.[2] For example, galena, an ore of lead, is USUALLY found in large pieces within its gangue, so it does not normally need extensive processing to remove it; but cassiterite, the chief ore of tin, is usually disseminated as very small CRYSTALS throughout its gangue, so when it is mined from hard rock, the ore-bearing rock first needs to be CRUSHED very finely,[3] and then has to be subjected to SOPHISTICATED processes to separate the ore |
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