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Multiphase evolution of a Li-pegmatite field from the Tashisayi area, Altyn Tagh, NW China: insights from a petrological, geochemical, and geochronological study

文献类型：期刊论文

作者Ma, Yin-Ce2,3,4; Xu, Xing-Wang2,3,4; Hong, Tao5,6; Jin, Wen-Kai7; Li, Hang1; Yang, Zhi-Quan8; Liu, Shan-Ke2,3,4; Kang, Kai2,3,4; Wang, Xue-Hai2,3,4; Niu, Lei2,3,4
刊名MINERALIUM DEPOSITA
出版日期2023-12-14
页码22
ISSN号0026-4598
关键词Li pegmatite Superimposed processes Geochronology Columbite-group minerals and quartz chemistry Tashisayi NW China
DOI10.1007/s00126-023-01237-0
英文摘要The Tashisayi Li deposit was newly discovered in the eastern part of the Tashisayi batholith, located in the Altyn Tagh region of Northwest China. A Li-rich composite pegmatite-aplite dyke (gamma 02) displays superimposed relationships among different Li-bearing phases, including lepidolite-albite-quartz pegmatite (LAQ), spodumene-albite-quartz pegmatite (SAQ), and aplite. The timing and conditions of magmatism and Li mineralization in the Tashisayi remain enigmatic. The study involved field observations, U-(Th)-Pb dating of columbite-group minerals (CGM), zircon, and monazite, and geochemical analyses of CGM and quartz. U-Pb dating of CGM of the gamma 02 dyke revealed formation ages of 471.6 +/- 3.5 Ma (LAQ), 439.6 +/- 5.0 Ma (SAQ), and 416.3 +/- 4.8 Ma (aplite). Zircon U-Pb and monazite U-(Th)-Pb dating of biotite granite, pegmatitic aplite, and muscovite granite yielded ages of ca. 473 Ma, 439 Ma, and 425 Ma, respectively. The dating results indicate that the rare-metal pegmatites and granites in the Tashisayi area were emplaced during various periods from the Early Ordovician to Early Devonian, consistent with other rare-metal deposits in the Tugeman region. The textural and geochemical analyses on the CGM and quartz reveal that the LAQ, SAQ and aplite crystallized from highly evolved magmas under water-poor and relatively low temperature conditions, experiencing distinct evolution trend and forming processes. Additionally, both LAQ and SAQ were influenced by fluid or magma activities and the pegmatitic melt forming LAQ could enrich both Li and Sn. Extensive tectonic events in the Altyn Tagh Orogen, including ocean basin closure and continental collisions, promote the development of Li-rich granitic magmas. Thus, we argue that the multiple magmatic and Li mineralization events in the Tashisayi area are most likely originated from the melting of Proterozoic crustal materials, and the process was controlled by tectonic interactions between the Central Altyn, Southern Altyn, Northern Altyn, and Eastern Kunlun blocks.
WOS关键词LA-ICP-MS ; U-TH-PB ; LITHIUM-BERYLLIUM DEPOSIT ; SOUTH TIBETAN DETACHMENT ; RARE-ELEMENT PEGMATITES ; GRANITIC PEGMATITES ; TRACE-ELEMENT ; COLUMBITE-TANTALITE ; OROGENIC BELT ; NORTH ALTUN
资助项目National Natural Science Foundation of China
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
出版者SPRINGER
WOS记录号WOS:001125552700001
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/111670]  
专题地质与地球物理研究所_中国科学院矿产资源研究重点实验室
通讯作者Hong, Tao
作者单位1.Sanming Univ, Coll Architecture & Civil Engn, Sanming 365004, Peoples R China
2.Chinese Acad Sci, Key Lab Mineral Resources, Inst Geol & Geophys, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Sun Yat Sen Univ, Sch Earth Sci & Engn, Guangdong Prov Key Lab Geodynam & Geohazards, Guangzhou 510275, Peoples R China
6.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519082, Peoples R China
7.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing 210023, Peoples R China
8.Xinjiang Bur Geol & Mineral Explorat & Dev, 3 Geol Party, Korla 841000, Xinjiang, Peoples R China
推荐引用方式
GB/T 7714		 Ma, Yin-Ce,Xu, Xing-Wang,Hong, Tao,et al. Multiphase evolution of a Li-pegmatite field from the Tashisayi area, Altyn Tagh, NW China: insights from a petrological, geochemical, and geochronological study[J]. MINERALIUM DEPOSITA,2023:22.
APA Ma, Yin-Ce.,Xu, Xing-Wang.,Hong, Tao.,Jin, Wen-Kai.,Li, Hang.,...&Niu, Lei.(2023).Multiphase evolution of a Li-pegmatite field from the Tashisayi area, Altyn Tagh, NW China: insights from a petrological, geochemical, and geochronological study.MINERALIUM DEPOSITA,22.
MLA Ma, Yin-Ce,et al."Multiphase evolution of a Li-pegmatite field from the Tashisayi area, Altyn Tagh, NW China: insights from a petrological, geochemical, and geochronological study".MINERALIUM DEPOSITA (2023):22.

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来源：地质与地球物理研究所

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