The origin of Xuefengling rare metal pegmatites and implications for ore prospecting in West Kunlun Orogen, China

doi:10.1016/j.oregeorev.2023.105784

	Bai, Hong-Yang 1,2; Wang, He1 ; Zhang, Xiao-Yu 1,2; Zhu, Bao-Zhang 1,2; Wang, Kun-Yu 1,2; Huang, Liang 1,2
	The origin of Xuefengling rare metal pegmatites and implications for ore prospecting in West Kunlun Orogen, China
Source Publication	ORE GEOLOGY REVIEWS
ISSN	0169-1368
	2023-12-01
Volume	163 Pages:12
DOI	10.1016/j.oregeorev.2023.105784
Language	英语
WOS Research Area	Geology ; Mineralogy ; Mining & Mineral Processing
Abstract	The Xuefengling rare metal pegmatite deposit is located in the West Kunlun orogenic belt, Northwest China. It is one part of the Bailongshan orefield, which is located 5 km southeast of the Bailongshan deposit, and it is composed of the Xuefengling, Xuepen, Longmenshan and Shuangya ore segments. The Xuefengling pegmatite and the Bailongshan pegmatite have similar zoning characteristics, and the pegmatite-hosted rare metal mineralization is approximately 206-213 Ma. On the basis of detailed observations and characterization of the textures and mineral assemblages of pegmatites in the Xuefengling deposit, four zones are identified: a quartz--spodumene (QS) zone, quartz-albite-muscovite (QAM) zone, quartz-albite-tourmaline (QAT) zone, and block albite-quartz pegmatite (BAQ) zone. We use the textures and major and trace element compositions of muscovite and columbite-group minerals from the Xuefengling pegmatite to illustrate both the existing state of rare ele-ments and the origin of the Xuefengling pegmatite. Our results show that from Li-poor (QAM and QAT zones) to Li-rich pegmatites (QS zone), the K/Rb and K/Cs ratios of muscovite gradually decrease from 41.6 to 10.9 and 2276 to 208, respectively, and the Mn# values of columbite-group minerals increase from 0.35 to 0.49, which are similar to the progressive evolution trend identified in Bailongshan pegmatites. However, the lower K/Rb and K/ Cs ratios of muscovite from the Xuefengling pegmatites than those from the Bailongshan pegmatites indicate that the Xuefengling pegmatites may have formed from the lower degrees of fractional crystallization of the same parental magma chamber, leading to the Bailongshan ore-field pegmatites gradually strengthening their evolution from east to west.
Keyword	Muscovite Columbite-group minerals Magmatic -hydrothermal evolution Xuefengling rare metal pegmatite deposit West Kunlun orogen
WOS ID	WOS:001126345600001
Indexed By	SCI
Citation statistics	Cited Times:1[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.gig.ac.cn/handle/344008/75431
Collection	中国科学院矿物学与成矿学重点实验室
Corresponding Author	Wang, He
Affiliation	1.Chinese Acad Sci, CAS Key Lab Mineral & Metallogeny, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation GB/T 7714	Bai, Hong-Yang,Wang, He,Zhang, Xiao-Yu,et al. The origin of Xuefengling rare metal pegmatites and implications for ore prospecting in West Kunlun Orogen, China[J]. ORE GEOLOGY REVIEWS,2023,163:12.
APA	Bai, Hong-Yang,Wang, He,Zhang, Xiao-Yu,Zhu, Bao-Zhang,Wang, Kun-Yu,&Huang, Liang.(2023).The origin of Xuefengling rare metal pegmatites and implications for ore prospecting in West Kunlun Orogen, China.ORE GEOLOGY REVIEWS,163,12.
MLA	Bai, Hong-Yang,et al."The origin of Xuefengling rare metal pegmatites and implications for ore prospecting in West Kunlun Orogen, China".ORE GEOLOGY REVIEWS 163(2023):12.

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