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Formation of the Granodiorite-Hosting Magushan Cu-Mo Polymetallic Deposit in Southern Anhui, Eastern China: Evidences from Geochronology and Geochemistry
Qi, Huasheng1,2,3; Lu, Sanming3; Yang, Xiaoyong1,2; Zhou, Yuzhang3; Zhao, Lili3; Deng, Jianghong1,4; Li, Jianshe3
2019-08-01
发表期刊MINERALS
卷号9期号:8页码:24
通讯作者Lu, Sanming(lusanming5101@sina.com) ; Yang, Xiaoyong(xyyang@ustc.edu.cn)
摘要The newly discovered Magushan Cu-Mo polymetallic deposit, located in southeastern Anhui, eastern China, is a middle-scale skarn-type polymetallic deposit with different ore types of veinlets-disseminated skarn (the primary type), quartz veins, and porphyry. LA-ICP-MS zircon U-Pb analyses yielded a crystallization age of 135.7 +/- 1.5 Ma for the ore-related granodiorite in Magushan. The granodiorites are I-type granites in nature, characterized by metaluminous and high-K calc-alkaline characteristics. They are enriched in large ion lithophile elements (LILEs, e.g., Ba, Th, and U) and light rare earth elements (LREEs), and depleted in high field strength elements (NFSEs, e.g., Nb, Ta, and Ti) and heavy rare earth element (HREEs), with slightly negative Eu anomalies (Eu/Eu* = 0.81-0.86). These granodiorites show high Mg# (mainly > 40) values, high MgO (1.73-1.96 wt. %) and low Na2O (<4.21 wt. %) contents, with whole-rock (Sr-87/Sr-86)(i) ratios (0.708877 to 0.710398), negative epsilon(Nd)(t) values of -5.4 to -5.2, and negative zircon epsilon(Hf)(t) values of -4.60 to -1.37, with old two-stage Hf model ages (T-DM2) between 1.2-1.5 Ga. Besides, they are characterized by high radiogenic Pb isotopic compositions with (Pb-206/Pb-204)(i) = 18.44-18.56, (Pb-207/Pb-204)(i) = 15.66-15.67, and (Pb-208/Pb-204)(i) = 38.77-38.87. These granodiorites are characterized by high zircon Ce4+/Ce3+ ratios (average 893) and Eu/Eu* ratios (average 0.51), indicating high magmatic oxygen fugacities. The distinct geochemical and isotopic features suggest that the Magushan granodiorites could be formed by metasomatized mantle-derived magmas, mixing with materials from Neoproterozoic crust that is widely distributed in the Southern Anhui. This study concludes that the formation of the Magushan Cu-Mo polymetallic deposits may largely depend on an oxidizing environment and multi-sources mixed of mantle- and crust-derived materials.
关键词high-K calc-alkaline I-type granodiorite zircon U-Pb dating Sr-Nd-Pb-Hf isotope Cu-Mo polymetallic deposit Southern Anhui
DOI10.3390/min9080475
收录类别SCI
语种英语
资助项目National Key Research and Development Program of China[2016YFC0600209] ; Project of Geological Science and Technology of Anhui Province[2016-K-4] ; Natural Science Foundation of China[41673040] ; National Key Research and Development Program of China[2016YFC0600209] ; Project of Geological Science and Technology of Anhui Province[2016-K-4] ; Natural Science Foundation of China[41673040]
WOS研究方向Mineralogy ; Mining & Mineral Processing
WOS类目Mineralogy ; Mining & Mineral Processing
WOS记录号WOS:000482981400013
出版者MDPI
引用统计
被引频次:11[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/162727
专题海洋地质与环境重点实验室
通讯作者Lu, Sanming; Yang, Xiaoyong
作者单位1.Univ Sci & Technol China, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Anhui, Peoples R China
2.Univ Sci & Technol China, CAS Ctr Excellence Comparat Planetol, Hefei 230026, Anhui, Peoples R China
3.Publ Geol Survey Management Ctr Anhui Prov, Hefei 230091, Anhui, Peoples R China
4.Chinese Acad Sci, Ctr Deep Sea Res, Inst Oceanol, CAS Key Lab Marine Geol & Environm, Qingdao 266071, Shandong, Peoples R China
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Qi, Huasheng,Lu, Sanming,Yang, Xiaoyong,et al. Formation of the Granodiorite-Hosting Magushan Cu-Mo Polymetallic Deposit in Southern Anhui, Eastern China: Evidences from Geochronology and Geochemistry[J]. MINERALS,2019,9(8):24.
APA Qi, Huasheng.,Lu, Sanming.,Yang, Xiaoyong.,Zhou, Yuzhang.,Zhao, Lili.,...&Li, Jianshe.(2019).Formation of the Granodiorite-Hosting Magushan Cu-Mo Polymetallic Deposit in Southern Anhui, Eastern China: Evidences from Geochronology and Geochemistry.MINERALS,9(8),24.
MLA Qi, Huasheng,et al."Formation of the Granodiorite-Hosting Magushan Cu-Mo Polymetallic Deposit in Southern Anhui, Eastern China: Evidences from Geochronology and Geochemistry".MINERALS 9.8(2019):24.
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