The process of pyrite formation in sediments results from the action of bacteria which reduce sulphate ions dissolved in the pore water to sulphide If there is iron present iron sulphide crystals begin to grow These sulphate reducing bacteria also need other nutrients to live which are provided by organic carbon in the sediment
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Get PriceThe rate of sedimentation is dependent upon the applied centrifugal field G being directed readily outwards; this is determined by the square of the angular velocity of the rotor ω in radians s 1 and the radians r in centimeters of the particle from the axis of the rotation according to the equation G = ω 2 r
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Get PriceRainbow Pyrite is usually in spherical concretion s that contain internal shrinkage fractures and the iridescence is caused by oxidation POLYMORPHS Marcasite USES Pyrite was once used as a source of sulfur but is now only a minor ore for both sulfur and iron
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Get PriceDry separation of pyrite from coal [Use of centrifugal and electrostatic methods] Full Record Related Research Authors Abel W T; Zulkoski M; Gauntlett G J Publication Date Sat Jan 01 00 00 00 EST 1972 Research Org Morgantown Energy Res Cent Bur Mines Morgantown WV OSTI Identifier 5222915 Resource Type Journal Article Journal Name
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Get PriceWhy is Pyrite a problem The presence of pyrite in construction materials such as aggregates used in floor hard core can lead to problems if exposed to certain conditions Materials containing large amounts of pyrite are likely to expand crack and crumble over time this is due to a chemical reaction that takes place when they are exposed to oxygen and moisture
Get PriceThe target is to study in a centrifugal field the features of recovery of heavy minerals pyrochlore zircon from rare metal ore which contains minerals of intermediate density Pyrite 5 1 0 5 1 0 Biletsky V Shpylovyi K 2024 Geotechnologies Volume 1 36 43 38
Get PriceAbstract and Figures The opportunity of decreasing gold losses by using a centrifugal gravity concentrator as a scavenger on flotation tailings was evaluated The tailings of the Cu flotation
Get PriceFrom here particle sedimentation velocity in the centrifugal field equals to v c = v gf /g ·Fr = 0 15/9 81 ·30 58 = 0 47 m/s F·Fr is usually replaced with Σ throughput index which may be adjusted depending on the particle precipitation pattern which in its turn is determined by Reynolds number
Get PricePyrite formally known as Iron disulfide is the most abundant naturally occurring of the sulfide minerals It has a crystal structure that resembles the fluorite structure Iron disulfide has a yellow brass metallic luster that is sometimes incorrectly recognized as gold Due to this mistaken identity it is often referred to as fool s gold 1
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Get PriceOct 25 2021Pyrite is an iron sulphide mineral that crystallizes in the form of cubic masses Often found in clumps pyrite can be identified in stalactites and botryoidal groups This crystal has a distinctively lustrous metallic shimmer that likens it to gold hence the nickname fool s gold
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