The bauxite genesis process relies on selective leaching of minerals as water percolates from the surface down through a mineralization zone to a drainage system below. Because of this, the resulting bauxite profile is not uniform, but forms a series of layers with the most weathered material at the top, ...
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This process has been repeated several times with maximum distribution throughout the profile due to environmental changes, including periodic fluctuations in the groundwater level. ... Constraints on bauxite genesis and the distribution of critical raw materials. 2022, Journal of Geochemical Exploration. Citation Excerpt :
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This process is experimental and the keywords may be updated as the learning algorithm improves. ... "Interrelationships of Structure and Genesis in the Kaolinite Group. Problems of Clay and Laterite Genesis," AIME Symposium, St. Louis, 1951 p. 144153. ... Snijders, P. A., "The Origins of Bauxite with Special Reference to the Guianas ...
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Bauxite is an important ore of aluminum, composed mainly of aluminum oxide and hydroxide minerals. It was named after the village Les BauxdeProvence in southern France, where it was first discovered in 1821 by geologist Henri Rouvère. Bauxites have a range of commercial applications, such as for the production of aluminum metal and aluminumbased chemicals, abrasives, cements, and ...
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As for karst type bauxite, Mongelli, 1997, Öztürk et al., 2002 studied the genesis of the bauxite formation in the southern Aplian block in Italy and in Taurides, Turkey respectively and Temur and Kansun (2006) explained the process of bauxite deposition in Masatdaqqi region of Turkey.
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This bauxitization process affected the upper surface of the Ubaid limestone formation, which directly underlies the Nuwaifa bauxite Formation. ... Gu J, Huang Z, Fan H, Jin Z, Yan Z, Zhang J (2013) Mineralogy, geochemistry and genesis of lateritic bauxite deposits in the WuchuanZheng'anDaozhenarea, northern Guizhou Province, China. J ...
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A succession of Permian bauxite deposits are concentrated in Wuchuan, Zheng'an and Daozhen counties of northern Guizhou, South China. These deposits overlie contrast bedrocks, which are discriminated from the other bauxites of karst type in South China. Horizons of these bauxites are typified by sandwiched constructure, the upper and the lower layers of bauxitic claystone interbedded by the ...
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Mineralogy, geochemistry, and genesis of lateritic bauxite deposits in the WuchuanZheng'anDaozhen area, northern Guizhou Province. J. Geochem. Explor. ... analyses demonstrate that kaolinite is the most likely host mineral of Li in the studied bauxites and the leaching process after bauxite deposition can significantly reduce the lithium ...
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the process of bauxite deposition in Masatdaqqi region of Turkey. ... The genesis of bauxite is closely related to carbonate or mafic basement and controlled by lithofacies paleogeography ...
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Geology, geochemistry, and genesis of REY minerals of the late Cretaceous karst bauxite deposits, Zagros Simply Folded Belt, SW Iran: Constraints on the oreforming process Article Fulltext available
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Chemical Geology Volume 622, 5 April 2023, 121388 Genetic mechanism of superlarge karst bauxite in the northern North China Craton: Constrained by diaspore insitu compositional analysis and pyrite sulfur isotopic compositions Lihua Zhao, Xuefei Liu, Qingfei Wang, Xinli Ma, Lei Liu, Xuefei Sun, Jun Deng Add to Mendeley
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As for karst type bauxite, Mongelli (1997) and Öztürk et al. (2002) studied the genesis of the bauxite formation in the southern Aplian block in Italy and in Taurides, Turkey respectively and ...
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The genesis of the Lindai bauxite deposit, including the parental affinity, mineral genesis, migration and sedimentation, and oreforming process of the bauxite, has been described in detail by ...
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Geology, geochemistry, and genesis of REY minerals of the late Cretaceous karst bauxite deposits, Zagros Simply Folded Belt, SW Iran: Constraints on the oreforming process F. Ahmadnejad G. Mongelli Geology
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Xuefei Liu. Bauxite is the world's main source of aluminum and typically consists of gibbsite, boehmite, and minor amounts of diaspore. However, bauxite deposits from the North and South China ...
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We conducted geological, mineralogical, δ 34 S pyrite, and insitu diaspore trace element analyses on the BaodeXingxian large bauxite deposit in the northern NCC, aiming to clarify the diasporeforming mechanism and explore the genesis of bauxite. Generally, bauxites in northern NCC contains three layers from bottom to top: Febearing ...
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1 Introduction Overview of Bauxite Ore As a residue of strong chemical weathering, bauxite is mainly composed of Aloxyhydroxides, Feoxides/oxyhydroxides and Tioxides (mainly TiO 2 phases) (Bárdossy, 1982, 1994; Bárdossy and Aleva, 1990; D'Argenio Mindszenty, 1995; Retallack, 2010 ).
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Bauxite residue (red mud), an alkaline, saline bauxite processing waste, is mainly produced by the Bayer process in which alumina is extracted from bauxite (Xue et al. 2015).The global inventory of bauxite residue reached an estimated billion tons in 2014 and is predicted to increase by 120 million tons per annum (Klauber et al. 2011).Globally, China is one of the largest producers of ...
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The downward enrichment in REEs and Y to the bottom of the bauxite ore was probably due to the bioleaching process postdeposition (Laskou and EconomouEliopoulos, 2013; Liu et al., 2020a). ... Carboniferous sequences in the southwestern North China Craton: implications for the regional tectonic evolution and bauxite genesis.
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The ICPMSDataCal program (Liu et al., 2008, Hou et al., 2009) was used to process the data to determine the UPb ages, and then, the Isoplot program was used to draw the concordia diagrams and calculate the weighted mean ... Implications for the regional tectonic evolution and bauxite genesis. Journal of Asian Earth Sciences., 98 (2015), pp ...
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Commercial utilization of highsulfur diasporic bauxite is challenging because of the hazards of sulfur to the Bayer process. This article discusses a case study of producing alumina from high ...
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The upper Permian Heshan Formation in Pingguo, Guangxi, China, is strongly enriched in lithium (Li) and niobium (Nb). The lower bauxite layer contains wt.%Nb2O5 (averaging wt.%), and the overlying clay rock layer contains wt.% Li2O (averaging wt.%), both of which exceed the cutoff grades for independent Li and Nb deposits and are therefore highly prospective ...
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Here we characterize the bauxite deposit in Yunnan area, China, through mineralogical and textural characteristics using XRD, SEMEDX, and microRaman analyses. The Aloxyhydroxide polymorphs (AlO (OH)) such as diaspore and boehmite are the dominant phases in most of the samples. Gibbsite (Al (OH) 3) is the main mineral in two samples from ...
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The bauxite overburden material in Brazil includes some topsoil and lateritic crusts, as well as thick clays that cover most bauxite deposits of the Brazilian Amazon region. These thick overburdens are usually considered a drawback during mining, as their removal increases the costeffectiveness of the whole mining process.
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This process, related to the forebulge uplift at the latest stages of Alpine orogenesis, ... Until recently, the issues of bauxite genesis and its relation to the adjacent karst palaeoenvironment and its tectonostratigraphic constraints in Croatia have been largely underestimated. They were treated earlier in the context of paleoclimate ...
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This process has been repeated several times with maximum distribution throughout the profile due to environmental changes, including periodic fluctuations in the groundwater level. ... aiming to clarify the diasporeforming mechanism and explore the genesis of bauxite. Generally, bauxites in northern NCC contains three layers from bottom to ...
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Karst bauxite is a major source of aluminum and contains high concentrations of trace elements such as Li, Ga, Sc, and rare earth elements (REEs). It is regarded as a potential nonconventional REE source due to the increasing demand for REEs. This study provides new mineralogical and geochemical evidence of a Lindai bauxite deposit in central Guizhou Province, aiming to analyze the genesis of ...
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Its process continues for a sufficient time and weathering products that are avoided from erosion will produce lateritic deposits. Bauxite can be formed from lateritic processes. Bauxite genesis is closely related to the original rock, formation process, and geological environment of its formation. The dominant bauxite thickness is found in ...
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Ore genesis theories are dependent on the mineral or commodity. Ore genesis theories generally involve three components: source, transport or conduit, and trap. This also applies to the petroleum industry, which was first to use this methodology. Source is required because metal must come from somewhere, and be liberated by some process.
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