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- Title
Lithium-rich claystone in Pingguo area, Guangxi, southwest China: precursor kaolinite controls lithium enrichment.
- Authors
Ling, Kunyue; Wen, Hanjie; Han, Tao; Lu, Zhitong; Cui, Yi; Luo, Chongguang; Yu, Wenbin
- Abstract
We investigated Late Permian Li-rich claystones with up to 1.05 wt% Li2O (average: 0.45 wt% Li2O) in the Pingguo area in Guangxi, southwest China. Our results show that cookeite (chlorite group) is the dominant Li-bearing mineral. Cookeite is intercalated with authigenic illite and detrital kaolinite, which suggests that cookeite formed during burial diagenesis from pre-existing Li-rich kaolinite in the original clay assemblage. The Li-rich claystones were mainly sourced from felsic volcanic rocks of the Emeishan large igneous province (LIP), and the Li-rich kaolinite was likely produced by weathering of felsic volcanic materials (i.e., pyroclastic rocks, tephras, and volcanic glass) deposited on a Permian carbonate platform. We propose that the abundance of precursor kaolinite and its Li content control the degree of Li enrichment in this new potential Li resource.
- Subjects
GUANGXI Zhuangzu Zizhiqu (China); CHINA; KAOLINITE; FELSIC rocks; VOLCANIC ash, tuff, etc.; OBSIDIAN; IGNEOUS provinces; TONSTEINS
- Publication
Mineralium Deposita, 2024, Vol 59, Issue 2, p329
- ISSN
0026-4598
- Publication type
Article
- DOI
10.1007/s00126-023-01210-x