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Genetic links between porphyry Mo and peripheral quartz vein Mo-Cu mineralization in the Baituyingzi district, eastern Inner Mongolia, NE China
Sun, Yan1; Liu, Jianming2; Zeng, Qingdong2; Wang, Jingbin1; Zhou, Lingli2; Wang, Yuwang1
2018-10-01
Source PublicationJOURNAL OF ASIAN EARTH SCIENCES
ISSN1367-9120
Volume165Pages:305-327
AbstractAlthough there are important implications for mineral exploration, the genetic links between porphyry Mo and peripheral Mo-Cu vein deposits remain unclear. To constrain their possible relationships, this paper studied hydrothermal veins, Ar-Ar geochronology, and O-H-S-Pb isotopes from three Mo-Cu deposits in the Baituyingzi district, NE China. Mineralization in the Baituyingzi district occurs as quartz stockworks (e.g., the Baituyingzi porphyry Mo deposit) surrounding the Baituyingzi monzogranite porphyry and 0.1-1.5 m wide quartz veins (e.g., the Kulitu and Baimashigou Mo-Cu deposits) along regional faults. Apart from the quartz unidirectional solidification textures (stage 1) observed at Baituyingzi, the sequence of hydrothermal activity at each deposit was similar (although with minor differences) and includes: stage 2, sulfide -barren and Cu -bearing quartz veins related to potassic alteration (e.g., K -feldspar, biotite, hematite); stage 3, Mo-bearing quartz veins with no obvious alteration; stage 4, pyrite -rich quartz veins related to quartz-muscovite-illite alteration; and stage 5, calcite-quartz veins representing late hydrothermal activity. Ar-40/Ar-39 plateau ages of muscovite from stage 4 demonstrated that hydrothermal activities in Baituyingzi (241.4 +/- 1.4 Ma) and Kulitu (239.4 +/- 1.2 Ma) were contemporaneous, consistent with earlier Re -Os ages, indicating that the three deposits were co -genetic in the Early Triassic. Moreover, similar fluid inclusion assemblages, homogenization temperature ranges (up to 500 degrees C) and O-H isotopic ratios (5 delta O-18(fluid) = 4.14%o to 7.89%o and delta D = - 97%o to - 90%0, indicative of magmatic origin) of stage 2 veins, and 834S values (0-3%o) and radiogenic lead isotope ratios of sulfide samples were identified from each deposit, further confirming that the three deposits belong to individual mineralized centers. Integrated with previous data, we consider that: (1) the Baituyingzi hydrothermal system formed during the intrusion of the similar to 248 Ma Baituyingzi monzogranite porphyry, and (2) the different stress regimes (e.g., regional structures and local fluid pressures), wall rock compositions, and fluid characteristics (e.g., salinity) of initial fluid branches resulted in the formation of three hydrothermal deposits with different vein attitudes and Cu/Mo ratios. Thus, our study reveals that the Mo-Cu vein deposits can constitute individual mineralization centers of a porphyry system as a result of different fluid branches that evolved along individual T-P-wall rock routes. This finding is a novel supplement to the magmatic hydrothermal mineralization model and can provide guidance for the exploration of similar Mo-Cu vein deposits.
KeywordGenetic links Baituyingzi district Porphyry and quartz vein-type Mo-Cu deposits Ar Ar geochronology O-H-S-Pb isotopes Fluid inclusions
DOI10.1016/j.jseaes.2018.04.006
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Major State Basic Research Program of China ; Major State Basic Research Program of China ; Geological Survey Project of China ; Geological Survey Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Major State Basic Research Program of China ; Major State Basic Research Program of China ; Geological Survey Project of China ; Geological Survey Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Major State Basic Research Program of China ; Major State Basic Research Program of China ; Geological Survey Project of China ; Geological Survey Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Major State Basic Research Program of China ; Major State Basic Research Program of China ; Geological Survey Project of China ; Geological Survey Project of China
WOS KeywordSALINITY MAGMATIC FLUIDS ; ASIAN OROGENIC BELT ; RE-OS AGES ; PB-ZN-AG ; NORTHEAST CHINA ; BINGHAM-CANYON ; GEOCHEMICAL CONSTRAINTS ; HYDROTHERMAL EVOLUTION ; ISOTOPIC CONSTRAINTS ; COPPER-DEPOSIT
Language英语
Funding ProjectNational Natural Science Foundation of China[41602102] ; National Natural Science Foundation of China[41390443] ; Major State Basic Research Program of China[2013CB429804] ; Major State Basic Research Program of China[2014CB440803] ; Geological Survey Project of China[DD20160071] ; Geological Survey Project of China[12120114065801]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Major State Basic Research Program of China ; Major State Basic Research Program of China ; Geological Survey Project of China ; Geological Survey Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Major State Basic Research Program of China ; Major State Basic Research Program of China ; Geological Survey Project of China ; Geological Survey Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Major State Basic Research Program of China ; Major State Basic Research Program of China ; Geological Survey Project of China ; Geological Survey Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Major State Basic Research Program of China ; Major State Basic Research Program of China ; Geological Survey Project of China ; Geological Survey Project of China
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000449447300019
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/89422
Collection矿产资源研究院重点实验室
Corresponding AuthorSun, Yan
Affiliation1.Beijing Inst Geol Mineral Resources, Beijing 100012, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Sun, Yan,Liu, Jianming,Zeng, Qingdong,et al. Genetic links between porphyry Mo and peripheral quartz vein Mo-Cu mineralization in the Baituyingzi district, eastern Inner Mongolia, NE China[J]. JOURNAL OF ASIAN EARTH SCIENCES,2018,165:305-327.
APA Sun, Yan,Liu, Jianming,Zeng, Qingdong,Wang, Jingbin,Zhou, Lingli,&Wang, Yuwang.(2018).Genetic links between porphyry Mo and peripheral quartz vein Mo-Cu mineralization in the Baituyingzi district, eastern Inner Mongolia, NE China.JOURNAL OF ASIAN EARTH SCIENCES,165,305-327.
MLA Sun, Yan,et al."Genetic links between porphyry Mo and peripheral quartz vein Mo-Cu mineralization in the Baituyingzi district, eastern Inner Mongolia, NE China".JOURNAL OF ASIAN EARTH SCIENCES 165(2018):305-327.
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