bauxite deposit in iron ore series

CHEMICAL-MINERАLOGICAL CHARACTERIZATION OF BAUXITES FROM DIFFERENT DEPOSITS

The higher percentage of iron oxide content (>20) in six (6) out of the 13 ore deposits, allowed the deposits to be grouped into three (3) categories of grades; high alumina ore, ferruginous ore ...

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Ore Geology Reviews

bauxite–iron" layering that is divided into three segments: (1) the ... Geological characteristics of the ore-bearing rock series of the Lindai bauxite are similar to the Xiaoshanba deposit ...

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Frontiers | A Metallogenic Model for Bauxite …

The undulating shapes of the paleo-topography control the scales and shapes of ore-bearing rock series and bauxite ore bodies. Then, different geophysical methods applied for exploration of bauxite …

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The "coal-bauxite-iron" structure in the ore-bearing rock …

The Kolijan bauxite deposit (southeast Mahabad, northwestern Iran) mainly contains aluminum-bearing iron ores and was deposited in karstic depressions and sinkholes of …

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Provenance and Tectonic Evolution of Bauxite …

Bauxite deposits can be classified into three types based on their bedrock composition. The first type is lateritic bauxite, which develops through weathering of aluminosilicate rocks.

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Orebody vertical structure and implications for ore-forming processes

The geological and experimental studies show that "coal–bauxite–iron" structure in Lindai deposit is formed under certain hydrogeological conditions, i.e., since lateritic bauxite or Al ...

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The "coal-bauxite-iron" structure in the ore-bearing rock series …

Bauxite deposits in southeastern Guizhou occur in the lower Permian Liangshan Formation. The rock series bearing the sedimentary bauxite exhibit a typical "coal-bauxite-iron" structure, in which the lower part consists of bauxitic shale intercalated with siderite concretions, the middle part consists of bauxitic rock intercalated with multilayer …

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Aluminum (Al) Ore | Minerals, Occurrence » …

Bauxite deposits: Bauxite is the most important type of aluminum ore, and bauxite deposits are the primary source of aluminum worldwide. Bauxite deposits are typically formed by weathering and …

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Ore Geology Reviews

The ore- bearing rock series that exhibits a typical "coal–bauxite–iron" structure is divided into three segments from the bottom upward, namely, an iron layer, a bauxite layer, and …

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Geology, geochemistry, and genesis of REY minerals of the …

The present study focuses on the geochemistry and occurrence of REY (rare earth elements and yttrium)-bearing minerals in the Late Cretaceous karst bauxite deposits in the central part of the Zagros Simply Fold Belt (ZSFB), SW Iran. The ore bodies comprise a series of individual pods and/or contiguous lenses that occur as infills …

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Bauxite | Properties, Formation, Uses » geologyscience

Bauxite is a sedimentary rock mineral that is the primary source of aluminum. It is formed through the weathering of aluminum-rich rocks in tropical and subtropical regions. The name bauxite is derived from the French village of Les Baux, where it was first discovered in 1821 by geologist Pierre Berthier. Bauxite is typically found in layers …

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GEMIS: Iron ore, manganese and bauxite deposits of the …

Iron ore, manganese and bauxite deposits of the Northern Territory: Report id: NTGS Report 13: Year: 2001: Author: Ferenczi, PA: Publisher: Northern Territory Geological Survey: Document Type: NTGS Report: Access Constraint: Creative Commons Attribution 4.0 International (CC BY 4.0). Please observe and retain any copyright or related notices ...

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Geology of bauxite deposits and their resource …

This paper presents procedures and technical parameters used for resource estimation of bauxite deposits including the non-consolidated pisolitic bauxite (Weipa) and the intensely lithified types …

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Mineralogical, geochemical, and spectral characteristics of …

The deposits of Az Zabirah bauxite are situated in the province of Ha'il near the Az Zabirah village (27° 55′ N & 43° 41′ E), which is 100 km to the northwest of Qiba town as well as 180 km to northern Buraydah (Fig. 1).Currently, Saudi Geological Survey, SGS) has identified three distinct NW-oriented bauxite-bearing (South, North, and …

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Geochemistry of the Yudong bauxite deposit, south-eastern …

The Yudong bauxite deposit is located in the Kaili–Huangping bauxite-concentrated area, in south-eastern Guizhou Province, China. The ore-bearing rock series consists of the lower part (Fe ...

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(PDF) A Metallogenic Model for Bauxite Deposits and …

Bauxite deposits in China can be classified into sedimentary, accumulative and lateritic types, of which sedimentary bauxite is the dominant one accounting for more than 80% of the total resource.

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The "coal–bauxite–iron" structure in the ore-bearing rock …

The middle deposition of the bauxite layer in the ore-bearing rock series is neritic/littoral facies sandstone. The minerals include mainly diaspore and kaolinite. …

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Evolution of Bauxite Accumulation in the Phanerozoic

The iron oxide content in the former is 4.35–4.45, and in the latter, 9.12–13.25%. Bauxite ore deposits similar in composition and structure are also found on the islands of Banka, Sinkep, Sulawesi, and Kalimantan . To a lesser extent, ore deposits are formed on Late Cenozoic volcanics and directly on dolerites without a lithomarge zone.

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Reservoir characteristics and formation model of Upper …

The bauxite series in eastern Ordos Ba- sin mainly include mudstone, bauxitic mudstone, clayey bauxite and ferrilite. The iron-rich layer of the bauxite series in the study area has a high hematite content of 85.9% and a lower content of clay minerals. Aluminum-containing layer has a high content of clay minerals and more aluminum hy- …

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Importance of hydrogeological conditions during formation …

Many bauxite deposits worldwide occur associated with coal or black carbonaceous rocks and ferroan strata, forming a "coal–bauxite–iron" structure (Kalaitzidis et al., 2010, Ling et al., 2013, Zhang et al., 2013, and references therein).In which, the Al-bearing rock series are consisted of three segments (i.e., iron argillite, bauxite, and …

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Beneficiation of bauxite ores

The iron oxide in bauxite ore is present as hematite or goethite; silica as clay; and free quartz and titania as leucoxene or rutile. ... Geology of bauxite deposits. The bauxite ore is a hydrated aluminum oxide with associated impurities like iron oxide, titanium dioxide and silicon dioxide. ... Series A—Econ. Geol., 46 (1979), pp. 1-24.

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Petrography and Geochemistry of the Jajarm Karst Bauxite Ore Deposit

The geological and experimental studies show that "coal–bauxite–iron" structure in Lindai deposit is formed under certain hydrogeological conditions, i.e., since lateritic bauxite or Al ...

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Compilation of Gallium Resource Data for Bauxite …

However, we report a range for bauxite deposits of <10 to 812 ppm, with an average Ga concentration of 57 ppm (table 1). Lateritic bauxites have Ga concentrations that range from below detection (< 8 ppm) to 146 ppm, with an average of 57 ppm. Karst-type bauxite deposits have Ga concentrations that range from 6.3 to 812 ppm, though the upper

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Metallogenic mechanism of Pingguo bauxite deposit, …

J. Cent. South Univ. (2017) 24: 1627−1636 DOI: 10.1007/s11771-017-3568-8 Metallogenic mechanism of Pingguo bauxite deposit, western Guangxi, China: Constraints from REE geochemistry and multi ...

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Characterization Study of some Bauxite Deposits in …

Alumina is produced from bauxite, which contains a mixture of various oxides, such as aluminum (Al), iron (Fe), silicon (Si), and titanium (Ti). Bauxite can also be considered a source of several other valuable metals, such as scandium (Sc), vanadium (V), and gallium (Ga). The composition and mineralogy of alumina determine their …

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Pre-Visean Bauxites and Iron-Aluminum Ores Deposit of the …

Abstract Data on geology of bauxite deposits associated with rich iron ores of the weathering crust of Precambrian ferruginous-siliceous shale formation within the Kursk Magnetic Anomaly (KMA) are summarized. High -grade iron ores and bauxites occur under a predominantly Paleozoic sedimentary cover at depths of over 400 m. The main …

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Bio-mineralization and potential biogeochemical processes in bauxite

The intense tectonism facilitating the meteoric fluid circulation in these bauxite deposits has produced a significant proportion (approximately 30% volume) of transformed red bauxite ore to ...

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Importance of hydrogeological conditions during formation …

The geological and experimental studies show that "coal–bauxite–iron" structure in Lindai deposit is formed under certain hydrogeological conditions, i.e., since lateritic bauxite or Al-rich laterite deposited upon the semi-closed karst depressions, Si can be continuously removed out under neutral/acidic groundwater conditions; the coal ...

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Geologic characteristics and potential of bauxite in China

Different classifications of bauxite deposits have been proposed. For example, Peive (1947) classified bauxite deposits into geosyncline and platform types based on tectonic setting and sedimentary facies. Meanwhile, Vadasz (1951) proposed a threefold classification including lateritic, karst, and mechanical clastic depositional …

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Sierra Leone discovers new deposits of …

Sierra Leone Telegraph: 27 May 2021: Sierra Leone, one of the poorest nations in the World despite an abundance of mineral resources valued at Trillions of Dollars, has announced new discovery of massive deposits …

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