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Multiple-stage tungsten mineralization in the Silurian Jiepai W skarn deposit, South China: Insights from cathodoluminescence images, trace elements, and fluid inclusions of scheelite
Li, Jiadai1,2,3; Li, Xiaofeng1,2,3; Xiao, Rong4
2019-09-01
Source PublicationJOURNAL OF ASIAN EARTH SCIENCES
ISSN1367-9120
Volume181Pages:22
AbstractThe Jiepai deposit, located in the northeastern part of the Miao'ershan-Yuechengling batholith, South China, is characterized by predominant skarn mineralization that formed near the contact between the Silurian biotite granites and the Upper Cambrian carbonate rocks. Jiepai scheelites are recognized as two main generations based on their occurrences, cathodoluminescence (CL) signatures, and REE systematics. Prograde skarn-hosted scheelite I has uniformly dark CL characteristics and LREE-enriched patterns. Retrograde skarn-hosted scheelite Ha is homogeneously dark under CL, and has a slightly MREE-enriched pattern, whereas quartz vein-hosted scheelite IIb is delineated by fine oscillatory CL zones and a relatively flat REE pattern. Additionally, the CL images reveal that both scheelite I and II were modified by later-stage hydrothermal overprints, which occur as ubiquitous overgrowth rims and cutting veins with bright CL signatures, low REE, but similar REE patterns to their precursors. The compositional variations and fluid inclusions in Jiepai scheelites identify episodic pulses of hydrothermal fluids with different properties. The ore-forming fluids with high Nb/Ta, but low Nb, Ta and REY in the early retrograde stage are featured by moderate to high temperature and low to moderate salinity. Under relatively oxidizing conditions, they interacted with the host rock and underwent boiling to precipitate scheelite I. By contrast, the fluids with higher Nb, Ta and REY, but lower Nb/Ta in the late retrograde stage have slightly lower temperature and higher salinity. We therefore speculate that scheelite II may deposit from later magmatic fluids that have experienced continued boiling in more reducing environment.
KeywordScheelite In-situ trace elements Fluid inclusions Silurian W skarn deposit South China
DOI10.1016/j.jseaes.2019.103898
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS KeywordPOLYMETALLIC DEPOSIT ; HUNAN PROVINCE ; GOLD DEPOSIT ; SM-ND ; NORTHWESTERN TASMANIA ; ORE GENESIS ; REE ; GARNET ; CONSTRAINTS ; APATITE
Language英语
Funding ProjectNational Natural Science Foundation of China[41472080]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000482496600006
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/93593
Collection矿产资源研究院重点实验室
Corresponding AuthorLi, Xiaofeng
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, 19 Beitucheng Western Rd, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
4.Hunan Inst Geol Survey, Changsha 410116, Hunan, Peoples R China
First Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Li, Jiadai,Li, Xiaofeng,Xiao, Rong. Multiple-stage tungsten mineralization in the Silurian Jiepai W skarn deposit, South China: Insights from cathodoluminescence images, trace elements, and fluid inclusions of scheelite[J]. JOURNAL OF ASIAN EARTH SCIENCES,2019,181:22.
APA Li, Jiadai,Li, Xiaofeng,&Xiao, Rong.(2019).Multiple-stage tungsten mineralization in the Silurian Jiepai W skarn deposit, South China: Insights from cathodoluminescence images, trace elements, and fluid inclusions of scheelite.JOURNAL OF ASIAN EARTH SCIENCES,181,22.
MLA Li, Jiadai,et al."Multiple-stage tungsten mineralization in the Silurian Jiepai W skarn deposit, South China: Insights from cathodoluminescence images, trace elements, and fluid inclusions of scheelite".JOURNAL OF ASIAN EARTH SCIENCES 181(2019):22.
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