期刊
MINERALS
卷 10, 期 6, 页码 -出版社
MDPI
DOI: 10.3390/min10060521
关键词
coal; lithium; enrichment; modes of occurrence; origin; Anhe Coalfield
资金
- National Natural Science Foundation of China [41972174]
- Geological Survey Project of China geological survey [DD20160187]
- Natural Science Foundation of Hebei Province [D2019508167]
- China Scholarship Council [201906435004]
- Fundamental Research Funds for the Central Universities [2009QD15]
Lithium (Li) is an important strategic resource, and with the increasing demand for Li, there are some limitations in the exploitation and utilization of conventional deposits such as the pegmatite-type and brine-type Li deposits. Therefore, it has become imperative to search for Li from other sources. Li in coal is thought to be one of the candidates. In this study, the petrology, mineralogy, and geochemistry of No. 2(1)coal from the Hebi No. 6 mine, Anhe Coalfield, China, was reported, with an emphasis on the distribution, modes of occurrence, and origin of Li. The results show that Li is enriched in the No. 2(1)coal, and its concentration coefficient (CC) value is 6.6 on average in comparison with common world coals. Lithium in the studied coal is mainly present in aluminosilicates, mainly clay minerals, some of which contain a significant amount of Ti. The Li enrichment in the No. 2(1)coal is mainly controlled by the terrigenous materials and sourced from the moyite of the Yinshan Upland. Furthermore, Li in the No. 2(1)coal is more enriched in coals formed in acidic and humid conditions and coals influenced by fresh water during peat accumulation.
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