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Genesis of the Aobaotu Pb-Zn deposit in the southern Great Xing'an Range, NE China: Constraints from geochronology and C-H-O-S-Pb isotopic and fluid inclusion studies
Wang, Ruiliang1; Zeng, Qingdong2,3,4; Zhang, Zhaochong1; Guo, Yunpeng5; Zhang, Zhuang6; Zhou, Lingli7,8; Wang, Xiaowei9; Yu, Bing2,3,4
2021-12-23
Source PublicationGEOLOGICAL JOURNAL
ISSN0072-1050
Pages22
AbstractThe Aobaotu Pb-Zn deposit (470,700 t; 1.51% Pb, 2.30% Zn) in the southern Great Xing'an Range, northeastern China, is hosted by the Late Jurassic volcanic tuff and structurally controlled by a near-east-west-trending fault. Three stages of mineralization were identified, namely, stage I of quartz +/- pyrite veins, stage II of quartz-polymetallic sulphide veins, and stage III of late quartz-calcite veins. The quartz and calcite that formed in the three stages were selected for fluid inclusion and C-H-O isotope analyses. The results show that the ore-forming fluid of the deposit belongs to the H2O-CO2-NaCl system at a medium temperature (concentrated at 220-300 degrees C) and in low salinity (0.7-12.1 wt% NaCl equiv). The delta C-13 values of the calcite and ankerite are in the range of -8.4 to -4.8 parts per thousand, indicating that as a source of deep magma. The delta DV-SMOW and delta 18OH2O values of quartz range from -108 to -88 parts per thousand and 4.55 to 5.85 parts per thousand, respectively, indicating that the initial fluid of the Aobaotu deposit was a mixture of residual magmatic and meteoric water. Sulphur isotope analysis of the sulphide minerals, that is, sphalerite, galena, pyrite, and chalcopyrite, yield delta S-34 value in a range of 1.44-4.94 parts per thousand, indicating that sulphur is mainly derived from magma. In addition, the Pb isotopic composition of the sulphides indicates that the ore-forming material has a mixed crust-mantle source. Zircon U-Pb dating suggests that the formation of the Aobaotu deposit is genetically related to the granodiorite porphyry (130.3 +/- 0.9 Ma). The combined geochronology and isotopic evidence suggest that the Aobaotu deposit is a magmatic-hydrothermal vein-type Pb-Zn deposit, opposite to a volcanic Pb-Zn deposit as suggested before. The Aobaotu deposit formed in an extensional tectonic setting caused by the rollback of the Palaeo-Pacific Plate.
KeywordC-H-O-S-Pb isotopes fluid inclusion southern Great Xing'an Range zircon U-Pb geochronology
DOI10.1002/gj.4347
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS KeywordMETAMORPHIC CORE COMPLEX ; NORTH CHINA ; INNER-MONGOLIA ; RE-OS ; U-PB ; TECTONIC EVOLUTION ; POLYMETALLIC DEPOSIT ; MOLYBDENUM DEPOSITS ; NORTHEASTERN CHINA ; SULFUR ISOTOPE
Language英语
Funding ProjectNational Natural Science Foundation of China[41802102] ; National Natural Science Foundation of China[91962104]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000734111900001
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/103933
Collection矿产资源研究院重点实验室
Corresponding AuthorZeng, Qingdong
Affiliation1.China Univ Geosci Beijing, Sch Earth Sci & Resources, Beijing, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing, Peoples R China
4.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China
5.Capital Normal Univ, Personnel Dept, Beijing, Peoples R China
6.Chifeng Chaihulanzi Gold Min Co Ltd, Chifeng, Peoples R China
7.Univ Coll Dublin, iCRAG, Dublin 4, Ireland
8.Univ Coll Dublin, Sch Earth Sci, Dublin 4, Ireland
9.China Nonferrous Min Grp Chifeng Baiyinuoer Min C, Chifeng, Peoples R China
Corresponding Author AffilicationKey Laboratory of Mineral Resources, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang, Ruiliang,Zeng, Qingdong,Zhang, Zhaochong,et al. Genesis of the Aobaotu Pb-Zn deposit in the southern Great Xing'an Range, NE China: Constraints from geochronology and C-H-O-S-Pb isotopic and fluid inclusion studies[J]. GEOLOGICAL JOURNAL,2021:22.
APA Wang, Ruiliang.,Zeng, Qingdong.,Zhang, Zhaochong.,Guo, Yunpeng.,Zhang, Zhuang.,...&Yu, Bing.(2021).Genesis of the Aobaotu Pb-Zn deposit in the southern Great Xing'an Range, NE China: Constraints from geochronology and C-H-O-S-Pb isotopic and fluid inclusion studies.GEOLOGICAL JOURNAL,22.
MLA Wang, Ruiliang,et al."Genesis of the Aobaotu Pb-Zn deposit in the southern Great Xing'an Range, NE China: Constraints from geochronology and C-H-O-S-Pb isotopic and fluid inclusion studies".GEOLOGICAL JOURNAL (2021):22.
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