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DOI	10.18654/1000-0569/2024.02.05
	The formation of mineral inclusions in accessory minerals from Qongjiagang pegmatite-type Li deposit and the implications to melt-fluid characteristics
	Shi RuiZhe; Zhao JunXing; He ChangTong; Qin KeZhang; Zhao YongNeng; Cao MingJian; Jia LiHui
发表日期	2024
ISSN	1000-0569
EISSN	2095-8927
起始页码	40
结束页码	2
卷号	40 期号:2
英文摘要	Qongjiagang pegmatite-type Li deposit in Tibet is the first discovered pegmatite-type deposit with economic value in the Himalayan region, which confirms that the Himalayan region has the potential to become a strategic base of rare metal in China, and provide indications to find pegmatite-type Li deposit in the Himalayan region. In this study, we use SEM to identify the type, frequency and occurrence (relationship with cracks) of mineral inclusions in the three main accessory minerals, monazite, apatite and zircon from granite and pegmatite of Qongjiagang Li deposit, combining with the EPMA analysis of feldspar inclusions in apatite to comprehensively trace the property and evolution of the melts and fluids. Our study indicates that: (1) the main mineral inclusions in monazite, apatite and zircon from Qongjiagang Li deposit include silicate, oxide, phosphates and a small amount of sulfide, not only the REE-rich monazite and apatite filling or intersecting cracks are formed by hydrothermal alteration, but also the uraninite and thorianite isolated from cracks occur in the self-irradiation region of zircon are related to fluids; (2) the appearances of columbite and pyrochlore inclusions in the apatite from tourmaline-muscovite granite demonstrate that the initial melt is enriched in Nb and Ta, the amount and type of rare metal mineral inclusions can be used as an indicator for rare metal mineralization in highly evolved granite and pegmatite; (3) the plagioclase inclusions with high and a large range of An values in apatite from spodumene pegmatite represent the capture of less-differentiated melt and continuously fractional crystallization. Our results indicate that the types and compositions of mineral inclusions in accessory minerals can be good tracers for the characteristics and evolution of melts and fluids in the highly evolved granite-pegmatite system.
英文关键词	Qongjiagang pegmatite-type Li deposit; Mineral inclusion; Accessory minerals; Plagioclase; Melt-fluid characteristics
语种	英语
WOS研究方向	Geology
WOS类目	Geology
WOS记录号	WOS:001170453200005
来源期刊	ACTA PETROLOGICA SINICA
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/301995
作者单位	Chinese Academy of Sciences; Institute of Geology & Geophysics, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Helmholtz Association; Helmholtz-Center Potsdam GFZ German Research Center for Geosciences; Chinese Academy of Sciences; Institute of Geology & Geophysics, CAS
推荐引用方式 GB/T 7714	Shi RuiZhe,Zhao JunXing,He ChangTong,et al. The formation of mineral inclusions in accessory minerals from Qongjiagang pegmatite-type Li deposit and the implications to melt-fluid characteristics[J],2024,40(2).
APA	Shi RuiZhe.,Zhao JunXing.,He ChangTong.,Qin KeZhang.,Zhao YongNeng.,...&Jia LiHui.(2024).The formation of mineral inclusions in accessory minerals from Qongjiagang pegmatite-type Li deposit and the implications to melt-fluid characteristics.ACTA PETROLOGICA SINICA,40(2).
MLA	Shi RuiZhe,et al."The formation of mineral inclusions in accessory minerals from Qongjiagang pegmatite-type Li deposit and the implications to melt-fluid characteristics".ACTA PETROLOGICA SINICA 40.2(2024).