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Trace element contents and in situ sulfur isotope analyses of pyrite in the Baiyun gold deposit, NE China: Implication for the genesis of intrusion related gold deposits

文献类型：期刊论文

作者Sun, Guotao1,4,5; Zeng, Qingdong3,5,6; Zhou, Lingli2; Wang, Yongbin5,6; Chen, Peiwen3,5,6
刊名ORE GEOLOGY REVIEWS
出版日期2020-03-01
卷号118页码:19
关键词Intrusion-related gold deposit In situ sulfur isotope LA-ICP-MS spot and mapping Mineralization processes Liaodong Peninsula China
ISSN号0169-1368
DOI10.1016/j.oregeorev.2020.103330
英文摘要Trace elements distribution in minerals and formation mechanism of visible gold are poorly understood in intrusion-related gold systems. Here, we choose the Baiyun gold deposit, which is hosted within the Paleoproterozoic metamorphic rocks in the Liaodong Peninsula, NE North China Craton (NCC), as a case study, to address these issues. The ore deposit geology characteristics and paragenesis are described in details; In situ geochemical and sulfur isotopic compositions of pyrite and bulk Pb isotopic ratios of pyrite were presented to define the genesis of pyrite that is closely associated with gold mineralization. Three generations of pyrite were recognized based on petrographic studies: metamorphic pyrite (Py0), hydrothermal pyrite (Py1) coexisting with milky quartz, and hydrothermal pyrite (Py2) coexisting with smoky quartz. In situ laser ablation-inductively coupled plasma-mass spectrometer (LA-ICP-MS) spot analysis suggests that both Py0 and Py1 contain low contents of invisible gold (mean 0.19 ppm and 0.17 ppm, respectively). However, Py1 is low in most other trace element contents and contains Au-Ag-Cu-Pb-Bi micro-inclusions. In contrast, Py2 contains both invisible gold (mean 0.50 ppm) and Au-Ag-Cu-Pb-Bi micro-inclusions. Furthermore, LA-ICP-MS mapping reveals the distributions of Ag, Cu, Pb, Bi and Te closely mimic that of Au, indicating an episode of ore-forming fluid rich in Au, Ag, Cu, Pb, Bi and Te. In situ sulfur isotope analysis of pyrite shows that Py0 has significantly positive delta S-34 values ( + 11.74-17.33 parts per thousand), suggesting that sulfur was derived from sedimentary sources. Py1 and Py2 have negative delta S-34 values (-8.53-6.19 parts per thousand, 10.44-6.86 parts per thousand, respectively), indicating that sulfur was derived from oxidized magmatic fluids. The magmatic fluids are concluded to be released from the early Cretaceous microdiorite magmas, providing most of the sulfur and ore-forming metals. Proofs include the close spatial association of the ore bodies and the dykes, as well the uniform Pb isotopic ratios of Pyl and the early Cretaceous microdiorite. Lines of geological, mineralogical, geochemical and isotopic evidence consistently suggest that the gold mineralization in the Baiyun deposit is intrusion-related, and was resulted from the similar to 126 Ma magmatic-hydrothermal activities in the region. Visible gold precipitating in pyrite and fractures was from metal-rich magmatic fluids rather than being remobilized from the metamorphic pyrite.
WOS关键词C-O-S ; LIAODONG PENINSULA ; ORE GENESIS ; CARLIN-TYPE ; FLUID INCLUSION ; ARSENIAN PYRITE ; STABLE-ISOTOPE ; YILGARN CRATON ; COPPER-DEPOSIT ; EASTERN BLOCK
资助项目National Key R&D Program of China[2016YFC0600108] ; State Key Laboratory of Lithospheric Evolution[S201605] ; Research Startup Project for Introduced Talent of Yunnan University[YJRC4201804] ; Cultivation Project for National Excellent Youth of Yunnan University[2018YDJQ009]
WOS研究方向Geology ; Mineralogy ; Mining & Mineral Processing
语种英语
WOS记录号WOS:000518709000010
出版者ELSEVIER
资助机构National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; Research Startup Project for Introduced Talent of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; Research Startup Project for Introduced Talent of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; Research Startup Project for Introduced Talent of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; Research Startup Project for Introduced Talent of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; Research Startup Project for Introduced Talent of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University ; Cultivation Project for National Excellent Youth of Yunnan University
源URL[http://ir.iggcas.ac.cn/handle/132A11/95478]  
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Zeng, Qingdong
作者单位1.Yunnan Univ, Sch Ecol & Environm Sci, Kunming 650500, Yunnan, Peoples R China
2.Trinity Coll Dublin, Sch Nat Sci, Dept Geol, iCRAG, Dublin 2, Ireland
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Yunnan Univ, Sch Earth Sci, Kunming 650500, Yunnan, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
6.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Sun, Guotao,Zeng, Qingdong,Zhou, Lingli,et al. Trace element contents and in situ sulfur isotope analyses of pyrite in the Baiyun gold deposit, NE China: Implication for the genesis of intrusion related gold deposits[J]. ORE GEOLOGY REVIEWS,2020,118:19.
APA Sun, Guotao,Zeng, Qingdong,Zhou, Lingli,Wang, Yongbin,&Chen, Peiwen.(2020).Trace element contents and in situ sulfur isotope analyses of pyrite in the Baiyun gold deposit, NE China: Implication for the genesis of intrusion related gold deposits.ORE GEOLOGY REVIEWS,118,19.
MLA Sun, Guotao,et al."Trace element contents and in situ sulfur isotope analyses of pyrite in the Baiyun gold deposit, NE China: Implication for the genesis of intrusion related gold deposits".ORE GEOLOGY REVIEWS 118(2020):19.

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来源：地质与地球物理研究所

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