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dc.contributor.authorSun, H.
dc.contributor.authorLi, H.
dc.contributor.authorDanisik, Martin
dc.contributor.authorXia, Q.
dc.contributor.authorJiang, C.
dc.contributor.authorWu, P.
dc.contributor.authorYang, H.
dc.contributor.authorFan, Q.
dc.contributor.authorZhu, D.
dc.date.accessioned2017-04-28T13:58:36Z
dc.date.available2017-04-28T13:58:36Z
dc.date.created2017-04-28T09:06:03Z
dc.date.issued2017
dc.identifier.citationSun, H. and Li, H. and Danisik, M. and Xia, Q. and Jiang, C. and Wu, P. and Yang, H. et al. 2017. U–Pb and Re–Os geochronology and geochemistry of the Donggebi Mo deposit, Eastern Tianshan, NW China: Insights into mineralization and tectonic setting. Ore Geology Reviews. 86: pp. 584-599.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/52393
dc.identifier.doi10.1016/j.oregeorev.2017.03.020
dc.description.abstract

© 2017 Elsevier B.V.The Donggebi Mo deposit located in NW China is a newly discovered, large, stockwork-type Mo deposit with ore reserves of 441 Mt @ 0.115% Mo. Ore bodies occur along faults and fractures at the external contact zone of a concealed porphyritic granite and volcaniclastic rocks of Gandun Formation, spatially associated with a fine-grained granite. Mo-bearing veins are mainly assemblages of volatile-rich K-feldspar-quartz-oxide, K-feldspar-quartz, polymetallic sulfides and calcite-quartz. Zircon LA-ICP-MS U–Pb dating yielded concordant ages of 234.6 ± 2.7 Ma and 231.8 ± 2.4 Ma for the porphyritic granite and the fine-grained granite, respectively; molybdenite Re–Os dating gave an isochron age of 234.0 ± 2.0 Ma. These ages further confirm an important and extensive magmatic-metallogenic event in Eastern Tianshan during the Triassic Indosinian orogeny. Whole-rock major and trace element analyses indicate that the granitic rocks associated with Mo mineralization are high in Si, K, Rb, Th, Nb, Ta, Ga and LREE, but low in P, Ti, Sr and Ba, belonging to high-K calc-alkaline granites with A-type features. Magma was likely derived from the re-melting of thickened lower crust in a post-collision compression environment in the Late Permian, experienced strong crystal fractionation and formed the large Donggebi Mo deposit under an intra-plate extension setting in the Early to Middle Triassic.

dc.publisherElsevier Science BV
dc.relation.sponsoredbyhttp://purl.org/au-research/grants/arc/DP160102427
dc.titleU-Pb and Re-Os geochronology and geochemistry of the Donggebi Mo deposit, Eastern Tianshan, NW China: Insights into mineralization and tectonic setting
dc.typeJournal Article
dcterms.source.volume86
dcterms.source.startPage584
dcterms.source.endPage599
dcterms.source.issn0169-1368
dcterms.source.titleOre Geology Reviews
curtin.departmentJohn de Laeter Centre
curtin.accessStatusFulltext not available


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