Anomaly and geochemistry of rare earth elements and yttrium in the late Permian coal from the Moxinpo mine, Chongqing, southwestern China

Zou, Jianhua; Liu, Dong; Tian, Heming; Tian, Li; Liu, Feng; Tan, L. P.

doi:10.1007/s40789-014-0008-3

Cited by 25 publications

(17 citation statements)

References 13 publications

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“…Goyazite also occurs in the boehmite-rich coals from the Jungar (Guanbanwusu, Heidaigou, and Haerwusu coal mines) and DaqingshanCoalfield (Adaohai, Hailiushu, and Datanhao coal mines), in which goyazite is closely related to kaolinite, boehmite, or diaspore, and occurs in the forms of cell infillings and as massiveand discrete particles, indicating an authigenicorigin [7,8,16,[75][76][77]. Authigenic goyazite has also been found in several other coals; for instance, in the coal-bearing strata of the Fusui Coalfield [55], and in the K2 coal of the Moxinpo coalfield [78]. Goyaziteis an important mineral indicating hydrothermal activity, which is usually formed by reaction between Al-rich hydrothermal solutions and P derived from organic matter in peat swamp [55,73].…”

Section: Mineralogical Evidencementioning

confidence: 99%

Enrichment of Nb-Ta-Zr-W-Li in the Late Carboniferous Coals from the Weibei Coalfield, Shaanxi, North China

Zhuang

Querol

et al. 2020

Energies

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Mineralogical and geochemical characteristics of coals provide crucial information on their potential clean, efficient, and integrated utilization. In this paper, the mineralogical and geochemical behaviors of the No. 5 coals of the Taiyuan Formation in the Weibei Coalfield, North China, were investigated, and their geological controlling factors were subsequently discussed. The minerals in the Weibei coals mainly consist of kaolinite (8.3%), calcite (5.0%), and pyrite (3.1%), with minor proportions of tobelite (2.9%), dolomite (1.7%), quartz (1.8%), and traces of siderite (0.4%) and gypsum (0.6%). Several critical elements, including Nb (19.8 mg/kg), Ta (3.6 mg/kg), Zr (71.0 mg/kg) and Li (32.3 mg/kg), occur at concentrations higher than those averages for world hard coals, making the Weibei coals potential sources of these critical elements. Several factors, terrigenous material, seawater invasion, and hydrothermal fluids are responsible for these mineralogical and geochemical characteristics. The L-type rare earth elements and yttrium (REE-Y) enrichment in the roofs and partings, Al2O3-TiO2 and Zr/TiO2-Nb/Y plots, and negative Eu and weak negative Ce anomalies in the Weibei coals indicate a felsic-intermediate dominated sediment provenance primarily derived from the Qilian-Qinling Oldland on the South. Marine bioclastic limestone, negative Ce and positive Y anomalies in coals imply the influence of seawater on the Weibei coals. Last but not least, the cleat-infilling and/or fracture-infilling calcite, pyrite, barite, and tobelite as well as the positive Eu and Gd anomalies, H-type, and M-type REE-Y enrichment patterns suggest the influence of hydrothermal fluids, which lead to re-distribution of some critical elements from roof and parting to the underlying coal seam.

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Section: Mineralogical Evidencementioning

confidence: 99%

Enrichment of Nb-Ta-Zr-W-Li in the Late Carboniferous Coals from the Weibei Coalfield, Shaanxi, North China

Zhuang

Querol

et al. 2020

Energies

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“…层分布面积广, 在四川南部、重庆、贵州西部均有分布(例如重庆松藻 [6] 、中梁山 [74] 、磨心坡 [75,80] 和四川古叙 [6] 等地), 是西南地区重要的主采煤层. 同时, 在一些矿区的煤层中, 其他关键金属也高度富集 [6,76,79,80] .…”

Section: 虽然该煤层准确的资源量或储量数据尚缺但是该煤unclassified

Resources of critical metals in coal-bearing sequences in China: Enrichment types and distribution

Dai¹,

Zhao²,

Wei³

et al. 2020

Chin. Sci. Bull.

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“…Compared with Li, REY in coal has been investigated more intensely. Anomalies of REY in coal and coal by-products were discovered in Russia Far East [21], United Kingdom, Poland [22], Romania [23], China [24][25][26][27][28][29], and United States [30][31][32][33]. Research on extracting REY from coal and coal by-products was recognized by the U.S. Department of Energy (DOE) in 2015 [34].…”

Section: Introductionmentioning

confidence: 99%

Mineralogical and Geochemical Characteristics of Lithium and Rare Earth Elements in High-Sulfur Coal from the Donggou Mine, Chongqing, Southwestern China

et al. 2020

Self Cite

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Coal and coal by-products are considered as the potential raw materials for critical elements (e.g., rare earth elements, Li, Ga, Ge, etc.), which have attracted much attention in recent years. The purpose of this study is to investigate the mineralogical and geochemical characteristics, and controlling geological factors of lithium and rare earth elements in the Lopingian (Wujiaping Formation) coal from the Donggou Mine, southeastern Chongqing Coalfield, China. Results indicate that lithium and rare earth elements are significantly enriched in the Donggou coals, which could be new potential alternative sources for critical elements. Concentrations of lithium and rare earth elements in the Donggou coals gradually increase from top to bottom. Lithium is mainly associated with kaolinite, while rhabdophane, florencite, goyazite, and xenotime are the main hosts of rare earth elements. The controlling geological factor is the groundwater leaching of underlying tuff, and to a lesser extent, the terrigenous clastic materials input from the top layer of the Kangdian Upland. This study provides mineralization information for lithium and rare earth elements exploration in coal measures.

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Anomaly and geochemistry of rare earth elements and yttrium in the late Permian coal from the Moxinpo mine, Chongqing, southwestern China

Cited by 25 publications

References 13 publications

Enrichment of Nb-Ta-Zr-W-Li in the Late Carboniferous Coals from the Weibei Coalfield, Shaanxi, North China

Enrichment of Nb-Ta-Zr-W-Li in the Late Carboniferous Coals from the Weibei Coalfield, Shaanxi, North China

Resources of critical metals in coal-bearing sequences in China: Enrichment types and distribution

Mineralogical and Geochemical Characteristics of Lithium and Rare Earth Elements in High-Sulfur Coal from the Donggou Mine, Chongqing, Southwestern China

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