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Petrography and Geochemistry of the Carboniferous Ortokarnash Manganese Deposit in the Western Kunlun Mountains, Xinjiang Province, China: Implications for the Depositional Environment and the Origin of Mineralization

文献类型：期刊论文

作者Zhang, Bang-Lu1,2,6; Wang, Chang-Le1,6; Robbins, Leslie J.4; Zhang, Lian-Chang1,2,6; Konhauser, Kurt O.3; Dong, Zhi-Guo1,2,6; Li, Wen-Jun1,6; Peng, Zi-Dong1,6; Zheng, Meng-Tian5
刊名ECONOMIC GEOLOGY
出版日期2020-11-01
卷号115期号:7页码:1559-1588
ISSN号0361-0128
DOI10.5382/econgeo.4729
英文摘要The Upper Carboniferous Ortokarnash manganese ore deposit in the West Kunlun orogenic belt of the Xinjiang province in China is hosted in the Kalaatehe Formation. The latter is composed of three members: (1) the Pt Member is a volcanic breccia limestone, (2) the 2nd Member is a sandy limestone, and (3) the 3rd Member is a dark gray to black marlstone containing the manganese carbonate mineralization, which, in turn, is overlain by sandy and micritic limestone. This sequence represents a single transgression-regression cycle, with the manganese deposition occurring during the highstand systems tract. Geochemical features of the rare earth elements (REE+Y) in the Kalaatehe Formation suggest that both the manganese ore and associated rocks were generally deposited under an oxic water column with Post-Archean Australian Shale (PAAS)-normalized REE+Y patterns displaying characteristics of modern seawater (e.g., light REE depletion and negative Ce anomalies). The manganese ore is dominated by fine-grained rhodochrosite (MnCO3), dispersed in Mn-rich silicates (e.g., friedelite and chlorite), and trace quantities of alabandite (MnS) and pyrolusite (MnO2). The replacement of pyrolusite by rhodochrosite suggests that the initial manganese precipitates were Mn(IV)-oxides. Precipitation within an oxic water column is supported by shale-normalized REE+Y patterns from the carbonate ores that are characterized by large positive Ce (>3.0) anomalies, negative Y (similar to 0.7) anomalies, low Y/Ho ratios (similar to 20), and a lack of fractionation between the light and heavy rare earth elements ((Nd/Yb)(PAAS) similar to 0.9). The manganese carbonate ores are also C-13-depleted, further suggesting that the Mn(II) carbonates formed as a result of Mn(III/IV)-oxide reduction during burial diagenesis.
WOS关键词RARE-EARTH-ELEMENTS ; BLACK-SEA ; ORE-DEPOSITS ; ACCRETIONARY TECTONICS ; FERROMANGANESE CRUSTS ; TRANSVAAL SUPERGROUP ; ISOTOPIC VARIATIONS ; CONTINENTAL-MARGIN ; NORTHWEST CHINA ; ORGANIC-MATTER
资助项目National Science Foundation of China[U1703242] ; National Fully Equipped Exploration Area Program, Development Research Center, China Geological Survey[121201004000160901-55/-68] ; China Scholarship Council (CSC)
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
出版者SOC ECONOMIC GEOLOGISTS, INC
WOS记录号WOS:000574404100009
资助机构National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Fully Equipped Exploration Area Program, Development Research Center, China Geological Survey ; National Fully Equipped Exploration Area Program, Development Research Center, China Geological Survey ; National Fully Equipped Exploration Area Program, Development Research Center, China Geological Survey ; National Fully Equipped Exploration Area Program, Development Research Center, China Geological Survey ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Fully Equipped Exploration Area Program, Development Research Center, China Geological Survey ; National Fully Equipped Exploration Area Program, Development Research Center, China Geological Survey ; National Fully Equipped Exploration Area Program, Development Research Center, China Geological Survey ; National Fully Equipped Exploration Area Program, Development Research Center, China Geological Survey ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Fully Equipped Exploration Area Program, Development Research Center, China Geological Survey ; National Fully Equipped Exploration Area Program, Development Research Center, China Geological Survey ; National Fully Equipped Exploration Area Program, Development Research Center, China Geological Survey ; National Fully Equipped Exploration Area Program, Development Research Center, China Geological Survey ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Fully Equipped Exploration Area Program, Development Research Center, China Geological Survey ; National Fully Equipped Exploration Area Program, Development Research Center, China Geological Survey ; National Fully Equipped Exploration Area Program, Development Research Center, China Geological Survey ; National Fully Equipped Exploration Area Program, Development Research Center, China Geological Survey ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; China Scholarship Council (CSC)
源URL[http://ir.iggcas.ac.cn/handle/132A11/98274]  
专题地质与地球物理研究所_中国科学院矿产资源研究重点实验室
通讯作者Zhang, Lian-Chang
作者单位1.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Alberta, Dept Earth & Atmospher Sci, Edmonton, AB T6G 2E3, Canada
4.Yale Univ, Dept Geol & Geophys, New Haven, CT 06511 USA
5.Sichuan Inst Land Planning Survey, Chengdu 610031, Peoples R China
6.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Bang-Lu,Wang, Chang-Le,Robbins, Leslie J.,et al. Petrography and Geochemistry of the Carboniferous Ortokarnash Manganese Deposit in the Western Kunlun Mountains, Xinjiang Province, China: Implications for the Depositional Environment and the Origin of Mineralization[J]. ECONOMIC GEOLOGY,2020,115(7):1559-1588.
APA Zhang, Bang-Lu.,Wang, Chang-Le.,Robbins, Leslie J..,Zhang, Lian-Chang.,Konhauser, Kurt O..,...&Zheng, Meng-Tian.(2020).Petrography and Geochemistry of the Carboniferous Ortokarnash Manganese Deposit in the Western Kunlun Mountains, Xinjiang Province, China: Implications for the Depositional Environment and the Origin of Mineralization.ECONOMIC GEOLOGY,115(7),1559-1588.
MLA Zhang, Bang-Lu,et al."Petrography and Geochemistry of the Carboniferous Ortokarnash Manganese Deposit in the Western Kunlun Mountains, Xinjiang Province, China: Implications for the Depositional Environment and the Origin of Mineralization".ECONOMIC GEOLOGY 115.7(2020):1559-1588.

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来源：地质与地球物理研究所

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