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Comparative geochemical study of scheelite from the Shizhuyuan and Xianglushan tungsten skarn deposits, South China: Implications for scheelite mineralization

Wu, Shenghua; Mao, Jingwen; Ireland, Trevor; Zhao, Zheng; Yao, Fojun; Yang, Yuping; Sun, Weidong

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Scheelite has been analyzed from the Shizhuyuan and the Xianglushan world-class W deposits from the Nanling W–Sn region and Jiangnan W belt, respectively. The Shizhuyuan deposit consists of proximal skarn and greisen W–Sn–Mo–Bi and distal Pb–Zn–Ag veins. The Xianglushan deposit, contains layer-like sulfide–scheelite and skarn W orebodies on granite cupolas overprinted by W greisen veins. Scheelite in skarn ores from the Shizhuyuan contains higher concentrations of Mo than those in the...[Show more]

dc.contributor.authorWu, Shenghua
dc.contributor.authorMao, Jingwen
dc.contributor.authorIreland, Trevor
dc.contributor.authorZhao, Zheng
dc.contributor.authorYao, Fojun
dc.contributor.authorYang, Yuping
dc.contributor.authorSun, Weidong
dc.date.accessioned2020-03-02T00:30:13Z
dc.identifier.issn0169-1368
dc.identifier.urihttp://hdl.handle.net/1885/201984
dc.description.abstractScheelite has been analyzed from the Shizhuyuan and the Xianglushan world-class W deposits from the Nanling W–Sn region and Jiangnan W belt, respectively. The Shizhuyuan deposit consists of proximal skarn and greisen W–Sn–Mo–Bi and distal Pb–Zn–Ag veins. The Xianglushan deposit, contains layer-like sulfide–scheelite and skarn W orebodies on granite cupolas overprinted by W greisen veins. Scheelite in skarn ores from the Shizhuyuan contains higher concentrations of Mo than those in the sulfide–scheelite and skarn ores from the Xianglushan deposit, reflecting differences between oxidizing and reducing magmatic-hydrothermal fluids. Under oxidizing conditions, W is accompanied by Mo partitions into exsolved fluids to form W–Mo garnet skarns, whereas under reducing conditions, little Mo is carried by exsolved fluids to form W pyroxene skarns. Trace element patterns of scheelite from both deposits show negative Ba, Sr, Zr, and Ti, and positive Ta anomalies. Rare earth element (REE) patterns of scheelite within skarns from the Shizhuyuan deposit have negatively inclined and flat M-type tetrad patterns, and scheelite from the greisens displays flat and positively inclined M-type tetrad patterns. We infer that the fluids formed scheelite within the W skarns and greisens inherited parental magma trace element and REE characteristics (depleted Ba, Sr, Zr, and Ti, enriched Ta, negative Eu anomalies, and tetrad effects). Whereas, scheelite from sulfide–scheelite veins and skarns of the Xianglushan deposit also has W- and MW-type tetrad REE patterns. The W-type tetrad REE patterns are complementary to REE patterns from the Renjiashan granite, and the MW-type tetrad REE patterns occur during a single evolutionary stage within a complex hydrothermal environment. Sulfide mineralization can form after or before W skarns (the former like Shizhuyuan deposit and the latter like Xianglushan deposit). The formation conditions of the latter included reducing conditions and sulfide firstly supersaturated in the melt, resulting in sulfide drops which carried W aggregated on the cupolas. W skarns and greisens in both deposits underwent generally successive processes related to water supersaturation in the melt. Following a temperature decrease and crystallization, bubbles carried material changing from Si and metal to Si oxide complexes.
dc.description.sponsorshipThis work was supported by the National Natural Science Foundation of China (Nos. 41430314 and 41303034), National Nonprofit Institute Research Grant of Chinese Academy of Geological Sciences (Nos. K1617 and JYYWF20180601), and National Key R&D Plan (2016YFC0600408).
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherElsevier
dc.rights© 2019 Published by Elsevier B.V.
dc.sourceOre Geology Reviews
dc.titleComparative geochemical study of scheelite from the Shizhuyuan and Xianglushan tungsten skarn deposits, South China: Implications for scheelite mineralization
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume109
dc.date.issued2019
local.identifier.absfor040201 - Exploration Geochemistry
local.identifier.absfor040307 - Ore Deposit Petrology
local.identifier.ariespublicationu3102795xPUB3364
local.publisher.urlhttps://www.elsevier.com/en-au
local.type.statusPublished Version
local.contributor.affiliationWu, Shenghua, Chinese Academy of Sciences
local.contributor.affiliationMao, Jingwen, Chinese Academy of Geological Sciences
local.contributor.affiliationIreland, Trevor, College of Science, ANU
local.contributor.affiliationZhao, Zheng, Chinese Academy of Geological Sciences
local.contributor.affiliationYao, Fojun, Chinese Academy of Geological Sciences
local.contributor.affiliationYang, Yuping, Chinese Academy of Geological Sciences
local.contributor.affiliationSun, Weidong, Chinese Academy of Sciences
local.description.embargo2037-12-31
local.bibliographicCitation.startpage448
local.bibliographicCitation.lastpage464
local.identifier.doi10.1016/j.oregeorev.2019.04.021
local.identifier.absseo970104 - Expanding Knowledge in the Earth Sciences
dc.date.updated2019-11-25T07:38:05Z
local.identifier.scopusID2-s2.0-85065240364
CollectionsANU Research Publications

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