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DOI	10.1016/j.oregeorev.2023.105740
	Boron isotope constraints on the migration and accumulation of rare alkali metals in the geyserite cesium deposits in Southern Tibet
	Li, Yin-Chuan; Wei, Hai-Zhen; Palmer, Martin R.; Wang, Yi-Jing; Li, Wei; Cai, Yue; Zhu, Yuan-Feng; Wang, Jun-Lin; Lu, Jian-Jun
发表日期	2023
ISSN	0169-1368
EISSN	1872-7360
卷号	163
英文摘要	Geothermal waters in the Shiquanhe-Yarlun Zangbo geothermal field of southern Tibet are highly enriched in rare alkali metals (RAMs), which form a globally unique geyserite Cs-deposit. Boron isotopes, together with the geochemistry of a local leucogranite, geothermal springs and geyserite were investigated to constrain the migration and accumulation of RAMs in the geyserite cesium deposit. The delta B-11 values of -9.7 parts per thousand to -8.4 parts per thousand in tourmalines from the Himalayan leucogranite have shown typical S-type granites. A mass balance calculation indicates that the magma of the S-type granite contained < 10 % dehydrated fluid, which resulted in an enrichment of RAMs by 4-5 times during the partial melting of crustal materials, compared to that in the UCC. The linear relationships of Sigma RAMs vs. B and Na + K vs. soluble Si, indicate that further enrichment of RAMs in the geothermal fluids was promoted by intense water-rock interaction at temperatures of 210 to 250 degrees C in the geothermal system reservoir. A strong adsorption process controlled the hyper enrichment of RAMs (especially Cs) during silica precipitation from the upwelling geothermal water, with the sharp decreases in temperature and pressure leading to the enrichment of Cs in fresh geyserites. Despite loss of RAMs during dehydration of the geyserite during phase transformation from opal-A, opal-CT, and chalcedony to quartz, freshly deposited geyserites have great potential for exploration of RAMs resources in this area.
关键词	Boron isotope Geothermal spring Geyserite Water-rock interaction Silica precipitation
英文关键词	ZIRCON U-PB; CONTINENTAL-CRUST; HYDROTHERMAL SYSTEMS; TECTONIC EVOLUTION; GEOTHERMAL FIELDS; LEUKOGRANITE; TOURMALINE; GEOCHEMISTRY; ROCKS; HELIUM
WOS研究方向	Geology ; Mineralogy ; Mining & Mineral Processing
WOS记录号	WOS:001110085900001
来源期刊	ORE GEOLOGY REVIEWS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283265
作者单位	Nanjing University; Henan Polytechnic University; University of Southampton; NERC National Oceanography Centre; Nanjing University; Chinese Academy of Sciences; Chinese Academy of Sciences; Nanjing University
推荐引用方式 GB/T 7714	Li, Yin-Chuan,Wei, Hai-Zhen,Palmer, Martin R.,et al. Boron isotope constraints on the migration and accumulation of rare alkali metals in the geyserite cesium deposits in Southern Tibet[J],2023,163.
APA	Li, Yin-Chuan.,Wei, Hai-Zhen.,Palmer, Martin R..,Wang, Yi-Jing.,Li, Wei.,...&Lu, Jian-Jun.(2023).Boron isotope constraints on the migration and accumulation of rare alkali metals in the geyserite cesium deposits in Southern Tibet.ORE GEOLOGY REVIEWS,163.
MLA	Li, Yin-Chuan,et al."Boron isotope constraints on the migration and accumulation of rare alkali metals in the geyserite cesium deposits in Southern Tibet".ORE GEOLOGY REVIEWS 163(2023).