Classification of Ore Deposits, Economic Geology.pptx

Classification of Ore Deposits, Economic Geology.pptx

1. Classification of Ore Deposits By Abdul Bari Qanit M.Sc. Geology

2. Based on the Relation with host-rock Syngenetic Ore Deposits Epigenetic Ore Deposits

3. Syngenetic Ore Deposits Ore deposits which are formed as the same time as the enclosing rock, are called “Syngenetic Ore Deposits”. Sedimentary ore d eposits are the example of syngenetic Ore Deposits.

4. Epi genetic Ore Deposits The Ore deposits that are formed later than the enclosing rock, are called “Epigenetic ore deposits”. Hydrothermal ore deposits are the example of epigenetic ore deposits.

5. Endogenic and Exogenic O re D eposits

6. Endogenic Ore Deposits Which formed in the Sub-surface, such as: . Chromite Deposits . Magnetite Deposits . Diamond Deposits . Sulfide Deposits

7. Exogenic Ore Deposits Which are formed on the Surface, such as: . Residual Weathering : Bauxite Deposits. . Mechanical Weathering : Placer Deposits.

8. Based on Genesis Magmatic Ore Deposits Metamorphic Ore Deposits Sedimentary Ore Deposits

9. Based On Geological Age Archean : Metallic Mineral Deposits like Fe, Mn, Ni, Chromite etc. Proterozoic : Non-Metallic Ore Deposits like building stones Barytes, asbestos, diamond etc. Paleozoic : Coal, Gypsum etc. Mesozoic : Coal/Lignite Tertiary: Petroleum, Kaolin, Bauxite etc. Quaternary: Placers Gold, Tin, Ilmenite etc..

10. Based on the Composition of the Ore Mineral Metallic ore minerals Non- Metallic ore minerals Radio-active ore minerals Petroleum .

11. Classification of Ore Formation Process