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Magma evolution and mineralization of Longmenshan lithium-beryllium pegmatite in Dahongliutan area, West Kunlun

文献类型：期刊论文

作者Tang JunLin1,2,3; Ke Qiang2,4,5; Xu XingWang2,5,6; Kang Kai2,5,6; Li Hang2,5,6; Tan KeBin3; Dong LianHui1,2; Liu YangXu3
刊名ACTA PETROLOGICA SINICA
出版日期2022-03-01
卷号38期号:3页码:655-675
ISSN号1000-0569
关键词Longmenshan Lithium-beryllium pegmatite Biotite granite Two-mica monzonitic granite Aplitic granite Magma evolution
DOI10.18654/1000-0569/2022.03.05
英文摘要Several lithium-beryllium deposits of pegmatite type have been found in Dahongliutan area, West Kunlun, which is a new lithium resource base in China. The origin of these deposits was emphasized as crystallization differentiation of the two-mica monzonitic granite formed by anatexis of the crust, but the relationship between the biotite granite in the study area and mineralization has never been discussed and concerned. In order to explore this problem, we conducted geochemistry and chronology studies of biotite granite, two-mica monzonitic granite, granitic pegmatite, and aplitic granite related to mineralization in Longmenshan. The results show : 1) The biotite granite and two-mica monzonitic granite have similar geochemical features of S-type granite and are enriched in Rb, La and Nd, depleted in Ba, Nb, Sr, P and Ti; 2) From biotite granite, two-mica monzonitic granite to aplitic granite, the process exhibits a continuous differential evolution of the magma; 3) The zircon LA-ICP-MS U-Pb age of biotite granite is 216.8 +/- 0. 85Ma, the zircon SIMS U-Pb age of two-mica monzonitic granite is 216. 0 +/- 1. 5Ma, the zircon LA-ICP-MS U-Pb age of aplitic granite is 209. 5 +/- 1. 2Ma, and the cassiterite LA-MC-ICP-MS U-Pb age of granitic pegmatite is 211. 3 +/- 5. 0Ma. This means that the formation time of granite from biotite granite, two-mica monzonitic granite to aplitic granite is continuous and contiguous. Based on this, we believe that the two-mica monzonitic granite and the lithium-beryllium pegmatite in Dahongliutan area are formed by the crystallization differentiation of biotite granite. Experimental petrology showed that biotite dehydration-melting of meta-greywacke or biotite gneiss forms biotite granite, and it is speculated that the extensive biotite granite in Dahongliutan area originated from the dehydration-melting of biotite and some amphibole during granulite facies metamorphism in the lower crust.
WOS关键词GRANITIC PEGMATITES ; GENESIS ; DISCRIMINATION ; GENERATION ; DIAGRAMS ; DEPOSIT ; GNEISS ; ZIRCON
WOS研究方向Geology
语种英语
出版者SCIENCE PRESS
WOS记录号WOS:000780616600005
源URL[http://ir.iggcas.ac.cn/handle/132A11/105083]  
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Xu XingWang
作者单位1.China Univ Geosci, Sch Earth & Mineral Resources, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
3.Xinjiang Bur Geol & Mineral Explorat & Dev, 6 Geol Party, Hami 839000, Peoples R China
4.Space Engn Univ, Beijing 101416, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
6.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Tang JunLin,Ke Qiang,Xu XingWang,et al. Magma evolution and mineralization of Longmenshan lithium-beryllium pegmatite in Dahongliutan area, West Kunlun[J]. ACTA PETROLOGICA SINICA,2022,38(3):655-675.
APA Tang JunLin.,Ke Qiang.,Xu XingWang.,Kang Kai.,Li Hang.,...&Liu YangXu.(2022).Magma evolution and mineralization of Longmenshan lithium-beryllium pegmatite in Dahongliutan area, West Kunlun.ACTA PETROLOGICA SINICA,38(3),655-675.
MLA Tang JunLin,et al."Magma evolution and mineralization of Longmenshan lithium-beryllium pegmatite in Dahongliutan area, West Kunlun".ACTA PETROLOGICA SINICA 38.3(2022):655-675.

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来源：地质与地球物理研究所

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