2-4. mineral (ore) deposits - PowerPoint PPT Presentation

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2 4 mineral ore deposits n.
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2-4. mineral (ore) deposits

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  1. 2-4. mineral (ore) deposits • 2-4-1. Definitions • Ore: A type of rock that contains minerals with important elements including metals that can be extracted from the rock at a profit. • Gangue: commercially worthless material that surrounds, or is closely mixed with, a wanted mineral in an ore deposit. • Ore deposits: Ore accumulation. Parts of the crust, where ores are concentrated • Mining: Extraction of ores, or other valuable minerals from the ore deposits

  2. 2-4-2. Types of Ore Deposits (based on the genesis) • Magmatic deposits • Metamorphically reworked deposits • Hydrothermal deposits • Sedimentary deposits • Weathering (residual) deposits • Placer deposits

  3. 2-4-3. Ore minerals