气候变化领域集成服务门户(CCPortal): Hydrothermal fluid evolution in the Cuonadong Sn-W-Be polymetallic deposit, southern Tibet: indicated by the in-situ element and boron isotope compositions of tourmaline

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DOI	10.3389/feart.2023.1106871
	Hydrothermal fluid evolution in the Cuonadong Sn-W-Be polymetallic deposit, southern Tibet: indicated by the in-situ element and boron isotope compositions of tourmaline
	Xie, Guozhi; Yan, Haibo; Zhang, Rongqing; Wang, Kun; Zhang, Lipeng
发表日期	2023
EISSN	2296-6463
卷号	11
英文摘要	The Cuonadong Sn-W-Be polymetallic deposit in the Himalayan leucogranite belt is a representative hydrothermal deposit. The role of fluid exsolution directly from magma and the fluid reaction with surrounding rocks for ore-forming element enrichment is still controversial. Tourmaline is a significant B-bearing mineral in the hydrothermal deposit, and its geochemical and B isotopic signatures can record the source and evolution of the ore-forming fluid. Two types of hydrothermal tourmaline in the hydrothermal quartz vein (Tur-1) and skarn (Tur-2) were used in this study. Both Tur-1 and Tur-2 have low X-site occupancy and mainly belong to the alkali group. Tur-1 plots in the schorl field, whereas Tur-2 is largely Mg-rich dravite. The B isotope analyses of Tur-1 have delta B-11 values of -13.7 to -13.2 parts per thousand, whereas Tur-2 has higher delta B-11 values of -11.1 to -9.3 parts per thousand . The distinct contact relationship and geochemical compositions suggest that Tur-1 in the hydrothermal vein was formed from a magmatic-hydrothermal fluid with little influence from surrounding rocks and had a genetic relationship with the Cuonadong leucogranite, whereas Tur-2 in the skarn involved more fluid from surrounding rocks with high delta B-11 values and strong metasomatic texture. The higher ore-forming element contents in Tur-2 than those in Tur-1 indicate that the reaction between the magmatic exsolution fluid and the surrounding rock is essential for the enrichment and precipitation of ore-forming elements.
关键词	tourmaline water-rock interaction hydrothermal fluids boron isotope Cuonadong Sn-W-Be polymetallic deposit
英文关键词	TRACE-ELEMENT; GEOCHEMICAL CHARACTERISTICS; COPPER-DEPOSIT; CHINA EVIDENCE; MAJOR-ELEMENT; GOLD DEPOSITS; LEUKOGRANITE; CONSTRAINTS; COLLISION; HIMALAYA
WOS研究方向	Geosciences, Multidisciplinary
WOS记录号	WOS:000937996200001
来源期刊	FRONTIERS IN EARTH SCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283563
作者单位	Chinese Academy of Sciences; Institute of Oceanology, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Laoshan Laboratory; Chinese Academy of Sciences; Guangzhou Institute of Geochemistry, CAS; Nanjing University
推荐引用方式 GB/T 7714	Xie, Guozhi,Yan, Haibo,Zhang, Rongqing,et al. Hydrothermal fluid evolution in the Cuonadong Sn-W-Be polymetallic deposit, southern Tibet: indicated by the in-situ element and boron isotope compositions of tourmaline[J],2023,11.
APA	Xie, Guozhi,Yan, Haibo,Zhang, Rongqing,Wang, Kun,&Zhang, Lipeng.(2023).Hydrothermal fluid evolution in the Cuonadong Sn-W-Be polymetallic deposit, southern Tibet: indicated by the in-situ element and boron isotope compositions of tourmaline.FRONTIERS IN EARTH SCIENCE,11.
MLA	Xie, Guozhi,et al."Hydrothermal fluid evolution in the Cuonadong Sn-W-Be polymetallic deposit, southern Tibet: indicated by the in-situ element and boron isotope compositions of tourmaline".FRONTIERS IN EARTH SCIENCE 11(2023).