Abundance, Distribution, and Modes of Occurrence of Uranium in Chinese Coals
| Autor: | Kejian Wang, Bofei Zhang, Jian Chen, Wenzhong Liu, Ping Chen, Duoxi Yao, Jidun Sha, Shuheng Tang, Youbiao Hu, Wenhui Huang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
inorganic chemicals
lcsh:QE351-399.2 Permian 020209 energy Geochemistry modes of occurrence chemistry.chemical_element 02 engineering and technology Neogene complex mixtures Chinese coals uranium Carboniferous 0202 electrical engineering electronic engineering information engineering otorhinolaryngologic diseases distribution Coal Organic matter geochemistry chemistry.chemical_classification abundance lcsh:Mineralogy business.industry technology industry and agriculture Geology Uranium Geotechnical Engineering and Engineering Geology Cretaceous respiratory tract diseases chemistry business Paleogene |
| Zdroj: | Minerals, Vol 7, Iss 12, p 239 (2017) |
| Popis: | Due to its environmental and resource impacts, the geochemistry of uranium in coal is of both academic and practical significance. In order to give a comprehensive summary about the geochemistry of uranium in coals, the abundance, distribution, and modes of occurrence of uranium in Chinese coals were reviewed in this paper. Although some coals from southwestern and northwestern China are significantly enriched in uranium, the common Chinese coals are of a comparable uranium concentration to the world coals. The roof and floor rocks, and parting of coalbeds, or coal benches that are close to the surrounding rock are favorable hosts for uranium in one coalbed. The uranium concentrations in coals of different ages decrease in this order, e.g., Paleogene and Neogene > Late Permian > Late Triassic > Late Carboniferous and Early Permian > Late Jurassic and Early Cretaceous > Early and Middle Jurassic. Uranium in Chinese coals is mainly associated with organic matter, and is correspondingly enriched in subbituminous coal and lignite. |
| Databáze: | OpenAIRE |
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