Provenance and ore-forming process of Permian lithium-rich bauxite in central Yunnan, SW China

Zhang, Jingyuan; Wang, Qingfei; Liu, Xuefei; Guo-fa, Zhou; Xu, H.; Zhu, Yiguang

doi:10.1016/j.oregeorev.2022.104862

Cited by 29 publications

(15 citation statements)

References 81 publications

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“…Previous studies have indicated that the diaspore in the bauxite deposits of central Guizhou is primarily derived from gibbsite transformation [2]. However, recent research has revealed that the diaspore in karst bauxite deposits originated not only from metamorphic processes but also from simple crystallization processes [32][33][34][35][36][37]. Generally, diaspore in karst bauxite forms under supergene conditions in alkaline and reducing environments [11,34,38].…”

Section: Effect Of the Karst Geomorphology On Mineral Faciesmentioning

confidence: 99%

“…Generally, diaspore in karst bauxite forms under supergene conditions in alkaline and reducing environments [11,34,38]. Similarly, anatase formation occurs under reducing conditions [5,33,37]. In contrast, gibbsite is more stable than diaspore and boehmite under supergene conditions [7,35].…”

Section: Effect Of the Karst Geomorphology On Mineral Faciesmentioning

confidence: 99%

“…Spherical and oolitic granular diaspore is more likely to inherit the gibbsite shape and be affected by the subsequent metamorphism [16]. Cryptocrystalline diaspore is formed by super-crystallization or kaolinite desilication [33,34,37,43]. In addition, the B2 and B3 mining areas lack boehmite and gibbsite, suggesting the area suffered intense late mineralization, and the aluminous minerals were completely transformed into diaspore [16,33,34,38,40].…”

Section: Effect Of the Karst Geomorphology On Mineral Faciesmentioning

confidence: 99%

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Effect of Karst Geomorphology on the Sedimentary Mineralization and Geochemical Distribution of Bauxite: An Example from the Xiaoyuan Area in Qingzhen, Guizhou Province

Yang

Luo

et al. 2023

Minerals

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Bauxite, in central Guizhou, is predominantly karst bauxite, but there is insufficient research on the effect of karst paleogeomorphology on bauxite development. Xiaoyuan bauxite is also a karst bauxite, and high- and low-iron bauxite deposits exist in the study area. This study conducts geological modeling of karst bauxite using controlled-source audio-frequency magnetotelluric (CSAMT) data and drill core data. The effects of karst paleogeomorphology on bauxite deposition and mineralization are evaluated by assessing karst paleogeomorphology, conducting a mineralogical analysis of drill cores at different locations, and determining the geochemical distribution characteristics of the elements in the horizontal and vertical directions. Combined with previous research results, we propose two metallogenic processes of high-iron and low-iron bauxite. The findings are significant for understanding the mechanism of bauxite formation.

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Section: Effect Of the Karst Geomorphology On Mineral Faciesmentioning

confidence: 99%

Section: Effect Of the Karst Geomorphology On Mineral Faciesmentioning

confidence: 99%

Section: Effect Of the Karst Geomorphology On Mineral Faciesmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Karst Geomorphology on the Sedimentary Mineralization and Geochemical Distribution of Bauxite: An Example from the Xiaoyuan Area in Qingzhen, Guizhou Province

Yang

Luo

et al. 2023

Minerals

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“…An increasing number of studies have investigated clay-type Li deposits. For example, the largest Li-bearing montmorillonite (Li-Mt; i.e., hectorite) deposit was discovered in the McDermitt/Kings Valley in Nevada, Li-rich bauxite deposits (Li 2 O = 3.40 × 10 5 tonnes) have been discovered in central Yunnan Province and other areas in China, and an anomalous Li-rich altered volcanic rock has been reported in the Manketou’ebo Formation in Naomugeng, Inner Mongolia, China . Furthermore, carbonate weathering can form Li-Mt deposits, with Li grades up to 10,000 ppm .…”

Section: Introductionmentioning

confidence: 99%

Mechanisms of Lithium Enrichment and Metallogenesis in a Simulated Montmorillonite–Fluid System

Yan,

Sun,

Cai

et al. 2023

Langmuir

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Due to strong industrial demand for Li, Li-bearing montmorillonite (Li-Mt) deposits are a focus for exploration, but the Li enrichment mechanisms in such deposits are unclear. In this study, adsorption experiments and mineralogical analyses were used to investigate the water−rock reactions at different Li concentrations, temperatures, durations, and pH conditions, in order to reveal the Li enrichment mechanisms in F-and Cl-rich systems. Our results suggest that water−rock reactions are different in the two halogen systems. The reaction in the LiCl−Mt system involves deprotonation, whereas dehydroxylation occurs in a LiF−Mt system. Lithium is adsorbed or exchanges with interlayer cations in Mt. Adsorption forms a monolayer that is consistent with the Langmuir model in a LiCl system. Lithium is adsorbed in multi-layers in Mt in a LiF system. For a given Li concentration, the adsorption capacity of the LiF−Mt system is 2.8 times greater than that of the LiCl−Mt system. The pH has a weaker effect in the LiCl−Mt system than in the LiF−Mt system. Furthermore, Li adsorption is hindered at very high or low pH in a LiF system. The chemical shift of Li is −0.2 ppm (±0.1 ppm) in a nuclear magnetic resonance (NMR), which indicates that Li occurs as inner-sphere complexes in the pseudo-hexagonal cavity in Mt. Based on a CaCl 2 leaching experiment, >50% (up to 97.94%) of the Li can be easily exchanged out of the Mt. The residual Li in the inner-sphere is the key to metallogenesis of Li-Mt deposits. Therefore, the grade of ion adsorption-type Li deposits is determined by the exchangeable Li.

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“…Detrital zircon geochronology has been widely applied to investigate the orogenic event owing to the abundance of detrital zircon grains in the sedimentary rocks [11]. A routine application is to constrain the maximum depositional age of strata [12][13][14][15]. Moreover, the integration of the multiple-age populations and zircon Lu-Hf isotope is useful for tracing the provenance and tectonic evolution [8,11,[16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Timing, Provenance, and Tectonic Implications of Ore-Hosting Metasedimentary Rocks in the Giant Liba Gold Deposit, West Qinling Belt, China

Zhang

Liu

et al. 2022

Minerals

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The closure time of the Shangdan Ocean is critical for understanding the tectonic evolution of the Proto-Tethys Ocean. However, the proposed closure time was prolonged from Ordovician to Devonian. In the present study, detrital zircon from the metasedimentary rocks of the Liba Group in the West Qinling Belt was analyzed to constrain the closure time of the Shangdan Ocean. The three youngest grains from the Liba Group yield a maximum deposition age of 418 ± 13 Ma, indicating the Middle Devonian deposition. Detrital zircon grains show two main U–Pb age peaks of 810 Ma and 440 Ma with εHf(t) values spanning from −24.3 to +8.8 and −6.3 to +4.1, respectively, suggesting that the sediments of the Liba Group were derived from both the North and South Qinling Belts. The Lower Devonian in the South Qinling Belt shows similar provenance to the Liba Group, whereas sediments from the North Qinling Belt are absent in the Silurian strata of the South Qinling Belt. From Late Silurian to Early Devonian, the tectonic setting changed from subduction to collision. This evidence consistently suggests the disappearance of the Shangdan Ocean. The noticeable decrease in magmatism from 510–420 Ma to 420–390 Ma and the shrinking of εHf(t) values from −15.5–+12.8 to −8.4–+4.2 reveal that the Shangdan Ocean, as the eastmost embranchment of the Proto-Tethys Ocean, was closed at ca. 420 Ma.

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Provenance and ore-forming process of Permian lithium-rich bauxite in central Yunnan, SW China

Cited by 29 publications

References 81 publications

Effect of Karst Geomorphology on the Sedimentary Mineralization and Geochemical Distribution of Bauxite: An Example from the Xiaoyuan Area in Qingzhen, Guizhou Province

Effect of Karst Geomorphology on the Sedimentary Mineralization and Geochemical Distribution of Bauxite: An Example from the Xiaoyuan Area in Qingzhen, Guizhou Province

Mechanisms of Lithium Enrichment and Metallogenesis in a Simulated Montmorillonite–Fluid System

Timing, Provenance, and Tectonic Implications of Ore-Hosting Metasedimentary Rocks in the Giant Liba Gold Deposit, West Qinling Belt, China

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