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Yaochong Mo deposit, a low-F porphyry Mo deposit from the Qinling-Dabie orogenic belt
Mi, Mei1; Li, Cong-ying1; Sun, Wei-dong3,4,6; Li, Deng-feng2; Zhu, Chao-hui5
2017-08-01
发表期刊ORE GEOLOGY REVIEWS
卷号88页码:188-200
文章类型Article
摘要The Qinling-Dabie orogenic belt is the largest Mo mineralization belt in the world. The Yaochong porphyry Mo deposit is located in the northwest Dabie Mountains, with a proven reserve of 51 kt Mo metal at an average grade of 0.058%. Here we report geochronology and geochemistry results of the Yaochong porphyry Mo deposit. Zircon U-Pb LA-ICP-MS dating shows that the Yaochong porphyry dykes and a hidden intrusion formed at 135 Ma and 140 Ma, respectively, which are consistent with Early Cretaceous Mo mineralization events in the Qinling-Dabie orogenic belt. Zircon grains from the Yaochong porphyry dikes (2-1788) and the hidden intrusion from drill holes (41-1940) have highly variable Ce4+/Ce3+ values. It is very likely that both the intrusion and the dikes have experienced high oxygen fugacity, but was partially reduced through assimilation. Apatite grains from the Yaochong porphyry and the intrusion are characterized by high but variable F concentrations and low Cl concentrations, suggesting that they formed in an F-enriched environment with high F/CI components in the magma source. The Ti-in zircon temperatures of the porphyry dikes range from 700 to 710 degrees C, whereas the average temperature of the buried intrusion nearby is 675 degrees C. Yaochong porphyry shows geochemical and petrologic characteristics similar to those of low F stockwork type porphyry Mo deposit in North America, which may be inherited from the Dabie suture zone. (C) 2017 Elsevier B.V. All rights reserved.
关键词Porphyry Molybdenum La-icp-ms Zircon Apatite Low-f Qingling-dabie
DOI10.1016/j.oregeorev.2017.03.029
收录类别SCI
语种英语
WOS记录号WOS:000405252200011
引用统计
文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/137037
专题深海极端环境与生命过程研究中心
作者单位1.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangzhou 510640, Guangdong, Peoples R China
2.Sun Yat Sen Univ, Sch Marine Sci, Guangzhou 510006, Guangdong, Peoples R China
3.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
4.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Qingdao 266071, Peoples R China
5.Sci Res Inst State Land Resources, Zhenzhou 450053, Henan Province, Peoples R China
6.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266237, Peoples R China
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Mi, Mei,Li, Cong-ying,Sun, Wei-dong,et al. Yaochong Mo deposit, a low-F porphyry Mo deposit from the Qinling-Dabie orogenic belt[J]. ORE GEOLOGY REVIEWS,2017,88:188-200.
APA Mi, Mei,Li, Cong-ying,Sun, Wei-dong,Li, Deng-feng,&Zhu, Chao-hui.(2017).Yaochong Mo deposit, a low-F porphyry Mo deposit from the Qinling-Dabie orogenic belt.ORE GEOLOGY REVIEWS,88,188-200.
MLA Mi, Mei,et al."Yaochong Mo deposit, a low-F porphyry Mo deposit from the Qinling-Dabie orogenic belt".ORE GEOLOGY REVIEWS 88(2017):188-200.
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