Ore Deposits A deposit contains an unusually high concentration of particular element This means the element have been concentrated in a particular area due to some process What sort of processes might concentrate these elements in one place? Gold Au Distribution of Au in the crust = 3.1 ppb by weight 3.1 units gold / 1,000,000,000 units of total crust = 0.00000031% Au Concentration of Au needed to be economically viable as a deposit = few g/t 3 g / 1000kg = 3g/ 1,000,000 g = 0.
metalliferous products. The microscopic investigation of these ore minerals is thus of high priority for anybody involved in the prospecting of ore mineral deposits, the extraction of these minerals , in their refractory and metallurgical treatment, and for those responsible for the final products. From 1920 ore
Types of Ore Deposit There are several types of ore deposits: Magmatic: crystallization of minerals within a body. of magma Hydrothermal: hot fluids released as magma cools, minerals precipitate from fluids. Sedimentary: precipitation of minerals from a lake or ocean water Placer deposits: deposition of metals in a river or stream . Residual: concentrations of minerals produced by weathering and chemical reactions with oxygen and water. This is a very broad ...
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Gold Au Distribution of Au in the crust = 3.1 ppb by weight 3.1 units gold / 1,000,000,000 units of total crust = 0.00000031% Au Concentration of Au needed to be economically viable as a deposit = few g/t 3 g / 1000kg = 3g/ 1,000,000 g = 0.00031% Au Need to concentrate Au at least 1000 fold to be a viable deposit Rare mines can be up to a few percent gold !
Ore deposits are crustal concentrations of useful elements that can be exploited at a proﬁt. Like all crustal rocks, they consist of minerals formed by geological processes. There are four basic geological requirements for any ore deposit to form : i) a source for the ore components ;
MINERAL RESOURCES ORE DEPOSITS ORE DEPOSITS How do ore deposits form? Groundwater transport creates Mississippi Valleytype ores. Hot water rises through the Orogenic belts from deep basins. The hot water leaches minerals and carries them. When the water returns to the surface and cool, it deposits metals.
Times New Roman Helvetica Bold Times Roman Default Design Iron Oxide Cu Au Deposits PowerPoint Presentation Characteristics of IOCG systems Mineralization IOCG Deposit Types PowerPoint Presentation IOCG Deposit Types PowerPoint Presentation IOCG Deposit Types PowerPoint Presentation IOCG Deposits Kiruna, Sweden IOCG Ore IOCG Ore ...
Based On Geological Age 1. Archean : Metallic Mineral Deposits like Fe, Mn, Ni, Chromite etc. 2. Proterozoic : Non Metallic Ore Deposits like building stones Barytes, asbestos, diamond etc. 3. Paleozoic : Coal, Gypsum etc. 4. Mesozoic : Coal/Lignite 5. Tertiary: Petroleum, Kaolin, Bauxite etc. 6. Quaternary: Placers Gold, Tin, Ilmenite etc.. 10. Based on the Composition of the Ore Mineral 1. Metallic ore minerals 2. Non Metallic ore minerals 3. Radio active ore minerals 4. Petroleum .
Evaporite deposits minerals like gypsum, halite deposited this way Laterites leaching of rock leaves residual materials behind Supergene ... A free PowerPoint presentation on PowerShow id: 43e4d0 YTQyY
June 10, 2020
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