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Genesis of the Wulong gold deposit, northeastern North China Craton: Constraints from fluid inclusions, H-O-S-Pb isotopes, and pyrite trace element concentrations
Yu, Bing1,2; Zeng, Qingdong1,2; Frimmel, Hartwig E.4,5; Wang, Yongbin1,2; Guo, Weikang1,2,3; Sun, Guotao1,2,3; Zhou, Tiancheng1,2,3; Li, Jianping6
2018-11-01
发表期刊ORE GEOLOGY REVIEWS
ISSN0169-1368
卷号102页码:313-337
摘要The Wulong vein-type gold deposit, located along the northeastern margin of the North China Craton (NCC), contains > 80 tonnes of gold at an average grade of 5.35 g/t. A total of 380 auriferous quartz veins are hosted in Late Jurassic gneissic two-mica granite and Early Cretaceous granodiorite. A paragenetic sequence, representing three hydrothermal stages, has been identified: (1) quartz +/- pyrite; (2) quartz-polymetallic sulfide; and (3) quartz-calcite +/- pyrite. Petrography, fluid inclusion microthermometry, and laser Raman spectroscopy revealed three types of fluid inclusions: CO2 +/- CH4 (type H2O center dot CO2 +/- CH4 (type II), and H2O center dot NaCl (type III). Fluid inclusion data indicate that during mineralization, fluid temperatures evolved from 283 to 395 degrees C to 219-328 degrees C to 144-255 degrees C, and salinities varied from 0.70 to 8.95 wt% to 0.18-7.86 wt% to 0.18-4.96 wt% NaCl equivalent. Quartz yielded delta O-18(H2O-SMOW) and 8D(SMOW) values of 0.9-7.3 parts per thousand and - 65 parts per thousand to - 48 parts per thousand, respectively, indicating that the ore-forming fluids were derived from magmatic water and mixed with meteoric water during the later stages of mineralization. Sulfides have delta S-34(CDT) sulfur isotopic compositions ranging from 0.9 parts per thousand to 3.9 parts per thousand, suggesting that the S was derived from a magmatic source. Pb isotopic compositions of sulfides ((206)pb/(204)pb = 17.488-17.718, Pb-207/Pb-204 15.565-15.631, and (208)pb/(204)pb = 38.190-38.766) indicate that the Pb was derived primarily from the upper crust, with minor input from the mantle. In situ laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) trace element analyses of three generations of pyrite (Pyl, Py2, and Py3) reveal that gold concentrations in Py2 are higher than those in Pyl and Py3, which indicates that gold mineralization occurred primarily during the middle stage. High Co/Ni ratios of pyrite are consistent with a hydrothermal origin. We suggest that the Wulong gold deposit formed during lithospheric thinning associated with destruction of the NCC, this process was triggered by subduction of the Paleo-Pacific plate during the Early Cretaceous.
关键词Fluid inclusions H-O-S-Pb isotopes Pyrite LA-ICP-MS trace element Wulong gold deposit North China Craton
DOI10.1016/j.oregeorev.2018.09.016
资助者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 ; 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 ; 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 ; 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
关键词[WOS]ORE-FORMING FLUIDS ; INDUCTIVELY-COUPLED PLASMA ; U-PB ; LIAODONG PENINSULA ; HEILONGJIANG PROVINCE ; JIAODONG PENINSULA ; SECULAR CHANGES ; LASER-ABLATION ; LIAOHE GROUP ; RB-SR
语种英语
资助项目National Key R&D Program of China[2016YFC0600108] ; State Key Laboratory of Lithospheric Evolution[S201605]
资助者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 ; 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 ; 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 ; 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
WOS研究方向Geology ; Mineralogy ; Mining & Mineral Processing
WOS类目Geology ; Mineralogy ; Mining & Mineral Processing
WOS记录号WOS:000453493100015
出版者ELSEVIER SCIENCE BV
引用统计
文献类型期刊论文
条目标识符http://ir.iggcas.ac.cn/handle/132A11/90292
专题矿产资源研究院重点实验室
通讯作者Zeng, Qingdong
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
4.Univ Wurzburg, Inst Geog & Geol, Bavarian Georesources Ctr, D-97074 Wurzburg, Germany
5.Univ Cape Town, Dept Geol Sci, ZA-7700 Rondebosch, South Africa
6.Liaoning Wulong Gold Min Co Ltd, Dandong 118012, Peoples R China
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Yu, Bing,Zeng, Qingdong,Frimmel, Hartwig E.,et al. Genesis of the Wulong gold deposit, northeastern North China Craton: Constraints from fluid inclusions, H-O-S-Pb isotopes, and pyrite trace element concentrations[J]. ORE GEOLOGY REVIEWS,2018,102:313-337.
APA Yu, Bing.,Zeng, Qingdong.,Frimmel, Hartwig E..,Wang, Yongbin.,Guo, Weikang.,...&Li, Jianping.(2018).Genesis of the Wulong gold deposit, northeastern North China Craton: Constraints from fluid inclusions, H-O-S-Pb isotopes, and pyrite trace element concentrations.ORE GEOLOGY REVIEWS,102,313-337.
MLA Yu, Bing,et al."Genesis of the Wulong gold deposit, northeastern North China Craton: Constraints from fluid inclusions, H-O-S-Pb isotopes, and pyrite trace element concentrations".ORE GEOLOGY REVIEWS 102(2018):313-337.
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