文献类型：期刊文献

英文题名：A new type of hydrothermal lithium mineralization dominated by cookeite: A case study of the Pingqiao Li-F deposit in Guizhou, Southwest China

作者：Xiang, Zhenzhong Ye, Lin Liu, Shiyu Wu, Tao Chen, Jun Huang, Zhilong Liu, Jianzhong Chen, Xing Chen, Faen Yu, Jiayan Liu, Sichen

第一作者：Xiang, Zhenzhong

通信作者：Ye, L[1]

机构：[1]Chinese Acad Sci, Inst Geochem, State Key Lab Crit Mineral Res & Explorat, Guiyang 550081, Peoples R China;[2]Univ Chinese Acad Sci, Beijing 100049, Peoples R China;[3]Guizhou Inst Technol, Sch Resources & Environm Engn, Guiyang 550003, Peoples R China;[4]Guizhou Univ Engn Sci, Coll Min Engn, Bijie 551700, Peoples R China;[5]Guizhou Univ, Coll Resources & Environm Engn, Guiyang 550025, Peoples R China;[6]Bur Geol & Mineral Explorat & Dev, Guiyang 550018, Guizhou, Peoples R China;[7]Bur Geol & Mineral Explorat & Dev, Geol Team 113, Guiyang 553001, Guizhou, Peoples R China;[8]Bur Geol & Mineral Explorat & Dev, Geol Team 105, Guiyang 550018, Guizhou, Peoples R China

第一机构：Chinese Acad Sci, Inst Geochem, State Key Lab Crit Mineral Res & Explorat, Guiyang 550081, Peoples R China

通信机构：corresponding author), Chinese Acad Sci, Inst Geochem, State Key Lab Crit Mineral Res & Explorat, Guiyang 550081, Peoples R China.

年份：2025

外文期刊名：GEOLOGICAL SOCIETY OF AMERICA BULLETIN

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001460070300001)】；

基金：This study was supported by the Great Science and Technology Engineering Projects of Guizhou Provincial Science and Technology Department (grant QKHZLZK: 2022ZD002) , the Strategic Priority Research Program of the Chinese Academy of Sciences (grant XDA0430103) , the National Natural Science Foundation of China (grants 42173025 and 92162218) , the Guizhou Provincial 2021 Science and Technology Subsidies (grant GZ2021SIG) , and the Guizhou Provincial Natural Science Foundation (grant ZK2023477) . The authors are indebted to the staff of the No. 113 and No. 105 Geological Team of the Guizhou Bureau Geology and Mineral Exploration and Development, who assisted with the sampling. We gratefully thank Shaohua Dong, Wenqin Zheng, Xiang Li, Yanwen Tang, Junjie Han, Youwei Chen, Quanliang Lei, Ting Zhou, and Fang Xiao from the State Key Laboratory of Ore Deposit Geology for their assistance with analysis and sample prepara-tion. In addition, we would like to extend our sincere gratitude to the editors and reviewers for their valuable comments and suggestions, which have significantly contributed to the finalization of this manuscript.

语种：英文

摘要：The Pingqiao deposit, a newly discovered large-scale fluorite-cookeite deposit in Guizhou, Southwest China, represents a new and unusual type of lithium (Li) mineralization. Recent exploration has identified over 90 kt of Li2O reserves. Using in situ laser ablation-inductively coupled plasma-mass spectrometry to analyze the primary Li bearing mineral, cookeite, and associated minerals, as well as major and trace elements and Li isotopes of the ore-hosted strata, this study investigated the spatial distribution, occurrence, and enrichment mechanisms of Li. The study yielded new geological and geochemical evidence to improve our understanding of Li mineralization. The results indicate that two generations of cookeite (Ckt-I and Ckt-II) and fluorite formed during the same hydrothermal stage, with crystallization temperatures of between 95 degrees C and 270 degrees C. Ckt-I is enriched in light rare earth elements and exhibits a negative Eu anomaly (average of 0.55), which decreases in Ckt-II (average of 0.88). This indicates gradual cooling of the ore-forming fluids, accompanied by the tetrad effect caused by fluorine (F) in the fluid. Nanoscale secondary ion mass spectrometry mapping of pyrite and cookeite suggests a shared Li and F source from the same mineralization event. The ore's Li isotope composition (-4.06%0 to +3.15%0, average of -1.24%0) is slightly negative, with variations implying upward fluid migration from deep Li-rich basement rocks, possibly mixed with basinal fluids. The U-Pb dating results of calcite associated with cookeite (134 +/- 4.5 Ma) and fluorite (Sm-Nd isochron age: 148 +/- 8 Ma) aligning with the regional ages links the mineralization event to medium-to low-temperature basinal fluids of the Yanshanian movement. Based on the research described in the previous paragraph and comparison with other types of Li deposits, a metallogenic model for the Pingqiao deposit is proposed, which offers new insights into this unusual type of Li mineralization.