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Geological Certainty

Geological Certainty. Course 13 - Mineral Resources. Mineral Resources - Terminology. Ore. Gangue. Distribution of important metal deposits. Processes that form Mineral Deposits. Types of Hydrothermal Deposits. Porphyry Deposits. VMS Deposits ( V olcanogenic M assive S ulfide).

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Geological Certainty

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  1. Geological Certainty Course 13 - Mineral Resources

  2. Mineral Resources - Terminology Ore Gangue

  3. Distribution of important metal deposits Processes that form Mineral Deposits

  4. Types of Hydrothermal Deposits Porphyry Deposits VMS Deposits (Volcanogenic Massive Sulfide) Epithermal Deposits Sedex Deposits Unconformity Deposits

  5. Massive Sulfide Lens Volcanogenic Massive Sulfide (VMS) Deposits

  6. Volcanogenic Massive Sulfide (VMS) Deposits

  7. 1 Types of Hydrothermal Deposits - Vein Deposits

  8. Veins of gold Quartz veins with gold occupying faults Deformed sedimentary and volcanic rocks Continental crust Ocean crust Granite intrusion Metamorphism causing fluid evolution Mantle Types of Hydrothermal Deposits - Vein Deposits

  9. Types of Hydrothermal Deposit - Porphyry Copper

  10. Types of Hydrothermal Deposit - Porphyry Copper

  11. Copper Ores Types of Hydrothermal Deposit - Porphyry Copper

  12. Types of Hydrothermal Deposit - Epithermal Deposits

  13. Types of Hydrothermal Deposit - Epithermal Deposits

  14. Types of Hydrothermal Deposit - Skarns "Classic" skarn associated with plutons

  15. Funnel-shaped mass of basaltic magma. Layers already cystallized Conduit from magma source. Crystal setting: dense crystals of chromite form in the magma and “rain” to the floor of the chamber accumulating in layers. Ground surface Thickness of magma body can be as much as several km. Magmatic Mineral Deposits – Crystal Segregation

  16. Magmatic Mineral Deposits – Sulfide Liquid Immiscibility Pentlandite Pyrrhotite

  17. Magmatic Mineral Deposits - Kimberlites

  18. Sedimentary Deposits - Evaporites

  19. 18km 18km Sedimentary Deposits – Strata-bound and Iron Stratabound Mineral Deposits Iron Deposits

  20. Banded Iron Formations (BIF) Sedimentary Deposits - Banded Iron Formations

  21. “mother lode” ore in quartz veins placers formed in rapids, waterfalls, and potholes buried placer placers formed in point bars Placer Deposits

  22. Placer Deposits

  23. Gossan outcrop Fe oxide residue Dissolution of Fe & Cu sulfides Reaction with oxygenated rain water Fe2+, Cu2+ in acid solution Watertable Reaction of primary Cu sulfide (e.g. chalcopyrite, CuFeS2) with Cu2+ in acid solution to from enriched zone of chalcocite (Cu2S). Primary FE/Cu sulfides Residual Deposits

  24. The Role of Plate Tectonic Setting in Controlling Distribution of Ore Deposits

  25. 1 2 3 4 The Role of Plate Tectonic Setting in Controlling Distribution of Ore Deposits

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