Mineralogical and Geochemical Characteristics of Lithium and Rare Earth Elements in High-Sulfur Coal from the Donggou Mine, Chongqing, Southwestern China
| Autor: | Yuanchen Guo, Heming Tian, Zhengcheng Wang, Tian Li, Jianhua Zou, Cheng Longfei |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Mineralization (geology)
enrichment lcsh:QE351-399.2 0211 other engineering and technologies Geochemistry modes of occurrence rare earth elements 02 engineering and technology 010502 geochemistry & geophysics 01 natural sciences Kaolinite Coal groundwater leaching 021108 energy 0105 earth and related environmental sciences lcsh:Mineralogy business.industry Terrigenous sediment Geology Coal measures Geotechnical Engineering and Engineering Geology lithium Clastic rock Leaching (metallurgy) business Groundwater |
| Zdroj: | Minerals Volume 10 Issue 7 Minerals, Vol 10, Iss 627, p 627 (2020) |
| ISSN: | 2075-163X |
| DOI: | 10.3390/min10070627 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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