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Multiple fluid sources in skarn systems: Oxygen isotopic evidence from the Haobugao Zn-Fe-Sn deposit in the southern Great Xing'an Range, NE China

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dc.contributor.authorLiu, Lijie
dc.contributor.authorZhou, Taofa
dc.contributor.authorFu, Bin
dc.contributor.authorIreland, Trevor
dc.contributor.authorZhang, Dayu
dc.contributor.authorLiu, Guangxian
dc.contributor.authorYuan, Feng
dc.contributor.authorZha, Xiangping
dc.contributor.authorWhite, Noel C.
dc.date.accessioned2024-08-30T02:22:15Z
dc.date.available2024-08-30T02:22:15Z
dc.date.issued2023
dc.date.updated2024-04-28T08:15:36Z
dc.description.abstractDiverse fluid sources and complex fluid flow paths in skarn systems appear to be well documented. Nevertheless, in situ microanalysis of oxygen isotopes by secondary ion microprobe (SIMS) in skarn minerals can provide further high spatial resolution information on this complexity and the formation of skarns and associated ore deposits. In this study, we investigated the Haobugao skarn Zn-Fe-Sn deposit (0.36 M tonnes Zn) in the southern Great Xing’an Range, northeast (NE) China, and the associated Early Cretaceous Wulanba biotite granite. Based on drill hole logging, four early skarn phases are recognized: proximal red-brown garnet-hedenbergite exoskarn, central green garnet exoskarn, light brown garnet-diopside exoskarn, and distal pyroxene skarn. Oxygen isotope analyses of garnet, pyroxene, and other minerals from skarn, oxide, and quartz-sulfide stages were carried out using SIMS to determine the origin and evolution of the skarn-forming hydrothermal system. Garnet from exoskarn has a much wider range in δ18OVSMOW, between –8.1 and +6.0‰, than other stages and minerals. The estimated δ18O values of fluids in equilibrium with the Haobugao skarn vary widely from –5.1‰ to +8.9‰, suggesting that the skarn formed via episodic flux of magmatic fluid and meteoric water. Low δ18O values of cassiterite and quartz from quartz-sulfide stage rocks are +1.2 to +3.6‰, and +5.7 to +5.9‰, respectively, indicating significant contributions of meteoric water during deposition of Pb-Zn sulphides. Therefore, meteoric fluids were periodically present throughout most of the stages of skarn formation at Haobugao.
dc.description.sponsorshipThis research was jointly supported by National Natural Science Foundation of China (Grant No. 91962218), China Geological Survey (Grant No. 12120115033801), and the Fundamental Research Funds for the Central Universities of China (Grant No. PA2019GDZC0093). The authors acknowledge the support of Inner Mongolia Chifeng Institute of Geology and Mineral Exploration Development for their valuable help during the fieldwork. The first author acknowledges the financial support of the China Scholarship Council during his stay in Australia.
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.issn0003-004X
dc.identifier.urihttps://hdl.handle.net/1885/733716056
dc.language.isoen_AUen_AU
dc.publisherMineralogical Society of America
dc.sourceAmerican Mineralogist
dc.subjectOxygen isotopes
dc.subjectskarn
dc.subjectmeteoric water
dc.subjectmagmatic fluid
dc.subjectfluid source
dc.subjectHaobugao
dc.titleMultiple fluid sources in skarn systems: Oxygen isotopic evidence from the Haobugao Zn-Fe-Sn deposit in the southern Great Xing'an Range, NE China
dc.typeJournal article
local.bibliographicCitation.issue10
local.bibliographicCitation.lastpage1972
local.bibliographicCitation.startpage1957
local.contributor.affiliationLiu, Lijie, Hefei University of Technology
local.contributor.affiliationZhou, Taofa, Hefei University of Technology
local.contributor.affiliationFu, Bin, College of Science, ANU
local.contributor.affiliationIreland, Trevor, College of Science, ANU
local.contributor.affiliationZhang, Dayu, Hefei University of Technology
local.contributor.affiliationLiu, Guangxian, Hefei University of Technology
local.contributor.affiliationYuan, Feng, Hefei University of Technology
local.contributor.affiliationZha, Xiangping, University of Science and Technology of China
local.contributor.affiliationWhite, Noel C., University of Tasmania
local.contributor.authoruidFu, Bin, u5078757
local.contributor.authoruidIreland, Trevor, u8205445
local.description.embargo2099-12-31
local.description.notesImported from ARIES
local.identifier.absfor370303 - Isotope geochemistry
local.identifier.absseo280107 - Expanding knowledge in the earth sciences
local.identifier.ariespublicationa383154xPUB44409
local.identifier.citationvolume108
local.identifier.doi10.2138/am-2022-8523
local.identifier.scopusID2-s2.0-85174539338
local.publisher.urlhttps://pubs.geoscienceworld.org/
local.type.statusPublished Version
publicationvolume.volumeNumber108

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