Geology, geochemistry, and genesis of REY minerals of the late Cretaceous karst bauxite deposits, Zagros Simply Folded Belt, SW : Constraints on the oreforming process Article Fulltext available
Bauxite deposits are generally divided into two categories according to their occurrence status and genesis: (1) lateritic bauxite contains gibbsite as the main ... mineralogical and micromineralogical studies can provide information about the bauxite formation process and the denudation history of the source rocks (D'Argenio and Mindszenty ...
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 :
Bauxite is a sedimentary rock with a relatively high aluminium content. It is the world's main source of aluminium and gallium. ... Prior to the invention of this process, and prior to the Deville process, aluminium ore was refined by heating ore along with elemental sodium or potassium in a vacuum. The method was complicated and consumed ...
However, the genesis of many bauxite occurrences remains insufficiently explained and untouched by modern models and techniques. The karst bauxite of the Unterlaussa mining district represents the most significant occurrence in Austria and is a prominent member of the European karst bauxites.
Each genetic group of bauxite has experienced separation of aluminum (Al) and silicon (Si) by the accumulation of Al, and the removal of Si, alkali metals, and rare earth elements from parent rock (sediment) during its weathering. Download : Download fullsize image Figure 1.
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 ).
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 ...
Geology, geochemistry, and genesis of REY minerals of the late Cretaceous karst bauxite deposits, Zagros Simply Folded Belt, SW : Constraints on the oreforming process F. Ahmadnejad G. Mongelli Geology
Geology, geochemistry, and genesis of REY minerals of the late Cretaceous karst bauxite deposits, Zagros Simply Folded Belt, SW : Constraints on the oreforming process Article May 2022
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 ...
However, the metallogenic mechanism of bauxite is still obscure due to the unclear formation process of the main ore mineral, diaspore. We conducted geological, ... However, the genesis of many bauxite occurrences remains insufficiently explained and untouched by modern models and techniques. The karst bauxite of the Unterlaussa mining district ...
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 ...
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 ...
Geological aspects and lateritic bauxite deposit genesis process on the site is a very interesting research material. Based on field mapping, Gibsite is the bauxite formed with frame type is the result of weatherin sediment residue on the soil catena. The study area consists of rocks that form lateritisation overburden, soil laterite, iron cap ...
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 ...
Karst bauxite deposits in the North Dalmatian piggyback basin (NDPGB) are a part of the Mediterranean bauxite belt, which is the largest European bauxite deposit zone; however, there is a general lack of information regarding the genesis, age, and precursor of the bauxite deposits in this region. In this study, we combined detrital zircon UPb geochronology with compositional, mineralogical ...
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, ...
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 ...
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 ...
However, there are actually two types of bauxites. The genesis of only one of them can be adequately explained by the lateritization process. Lateritization usually means that aluminumbearing igneous rocks (like granite) are slowly weathering to clay minerals, which are then altered to aluminum hydroxides by continuous leaching of silica.
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