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Examples of Ore Deposits

Examples of Ore Deposits. Magmatic Cu-Ni-PGE-Cr Hydrothermal --- veins --- metasomatic skarns *** magmatic , meteoric, or sea water origin Low-Temperature --- Banded Iron Formations --- Residual weathering/ supergene enrichment. Komatiitic basalt. Peridotite. Gabbro.

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Examples of Ore Deposits

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  1. Examples of Ore Deposits • Magmatic Cu-Ni-PGE-Cr • Hydrothermal --- veins --- metasomatic skarns *** magmatic , meteoric, or sea water origin • Low-Temperature --- Banded Iron Formations --- Residual weathering/ supergene enrichment

  2. Komatiitic basalt Peridotite Gabbro Slate Ore-localizing embayment in footwall gabbro, Zone 3

  3. Nickel plate Electrowinning cathode

  4. Uses of platinum

  5. Pt wire Pt mesh

  6. Mechanisms of Mineral Precipitation • Temperature decline • Pressure change • Dilution • Change in oxidation state (e.g. Eh) • Change in pH • Change in parameters like cation concentration or volatile pressure

  7. Example Reactions ZnCl2 + H2S = ZnS(s) + 2H+ + 2Cl- CuCl+ + FeCl2 + 2H2S = CuFeS2(s) + 4H+ + 3Cl- PbCl+ + H2O + ½ S2 = PbS(s) + 2H+ + Cl- + ½ O2

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