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Geochronology, geochemistry and fluid inclusions of the Yechangping giant porphyry-skarn Mo-W deposit, East Qinling, China

文献类型：期刊论文

作者Zhou, Tiancheng4,5; Zeng, Qingdong2,3,6; Gao, Shuai1; Chu, Shaoxiong2,3; Yang, Jinhui2,3,6
刊名ORE GEOLOGY REVIEWS
出版日期2020-12-01
卷号127页码:20
ISSN号0169-1368
关键词Yechangping Mo-W deposit East Qinling zircon U-Pb dating Whole-rock and isotope geochemistry Fluid inclusion
DOI10.1016/j.oregeorev.2020.103823
英文摘要The Yechangping giant porphyry-skarn Mo-W deposit is located in the East Qinling molybdenum belt, Henan Province. Molybdenum mineralization occurs mainly as veins and veinlets or disseminated within dolomite and granite porphyry. The mineralized granite porphyry, emplaced at 148.1 +/- 1.0 Ma, has petrological, mineralogical, and geochemical characteristics of I-type granite. The rock belongs to the high-K calc-alkaline to shoshonitic series and is characterized by enrichments in large ion lithophile elements and significant negative Eu, Ba, Sr, P, and Ti anomalies, attributed to strong fractional crystallization. The granite has negative wholerock epsilon Nd(t) values (-13.2 to -12.4) and zircon epsilon Hf(t) values (-14.2 to -6.8), corresponding to old wholerock Nd and zircon Hf model ages, which indicate that the primary magma was derived from partial melting of the ancient lower crust of the North China Craton. Four mineralization stages are identified in the Yechangping deposit. Stage I is a magmatic-hydrothermal transitional stage, which is respresented by the 1-5 mm-wide unidirectional solidification texture (UST), formed from fluids with high temperatures (375-504 degrees C), high/low salinities (46.3-51.0 vs. 7.81-13.75 wt% NaCl equiv.), and a high oxygen fugacity in an H2O-NaCl-CO2 fluid system. Stage II quartz-K-feldspar stockworks or quartz-K-feldspar-pyrite veins, with minor molybdenite, which are characterized by the K-feldspar and quartz with potassic-quartz alteration; they were formed from fluids with medium-high temperatures (320-464 degrees C), high/low salinities (38.8-43.4 vs. 5.41-12.85 wt% NaCl equiv.), and a relatively high oxygen fugacity. Stage III quartz-molybdenite stockworks and quartz-molybdenite-polymetallic veins, associated with quartz-sericite alteration, were formed from fluids with medium-low temperatures (273-396 degrees C), and variable salinities (3.38-40.0 wt% NaCl equiv.). Stage IV quartz-carbonate and fluorite veins, associated with fluid-related argillic alteration were characterized by low temperatures of 171-245 degrees C and low salinities of 3.23-8.00 wt% NaCl equiv.. The prolonged fractional crystallization, the high oxidization state of the magmatic-hydrothermal system and the fluid boiling process were the key factors that have contributed to the formation of the Yechangping giant Mo-W deposit.
资助项目National key R&D Program of China[2016YFC0600109] ; State Key Laboratory of Lithospheric Evolution, IGGCAS[SKL-Z201905] ; National Natural Science Foundations of China[41602099]
WOS研究方向Geology ; Mineralogy ; Mining & Mineral Processing
语种英语
出版者ELSEVIER
WOS记录号WOS:000598254800001
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, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; National Natural Science Foundations of China ; National Natural Science Foundations of China ; National Natural Science Foundations of China ; National Natural Science Foundations of China ; 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, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; National Natural Science Foundations of China ; National Natural Science Foundations of China ; National Natural Science Foundations of China ; National Natural Science Foundations of China ; 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, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; National Natural Science Foundations of China ; National Natural Science Foundations of China ; National Natural Science Foundations of China ; National Natural Science Foundations of China ; 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, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; State Key Laboratory of Lithospheric Evolution, IGGCAS ; National Natural Science Foundations of China ; National Natural Science Foundations of China ; National Natural Science Foundations of China ; National Natural Science Foundations of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/99910]  
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.Linyi Nat Resources & Planning Bur, Linyi 276001, Shandong, Peoples R China
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
4.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China
5.Minist Nat Resources, Inst Oceanog 1, Key Lab Marine Geol & Metallogeny, Qingdao 266061, Peoples R China
6.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Zhou, Tiancheng,Zeng, Qingdong,Gao, Shuai,et al. Geochronology, geochemistry and fluid inclusions of the Yechangping giant porphyry-skarn Mo-W deposit, East Qinling, China[J]. ORE GEOLOGY REVIEWS,2020,127:20.
APA Zhou, Tiancheng,Zeng, Qingdong,Gao, Shuai,Chu, Shaoxiong,&Yang, Jinhui.(2020).Geochronology, geochemistry and fluid inclusions of the Yechangping giant porphyry-skarn Mo-W deposit, East Qinling, China.ORE GEOLOGY REVIEWS,127,20.
MLA Zhou, Tiancheng,et al."Geochronology, geochemistry and fluid inclusions of the Yechangping giant porphyry-skarn Mo-W deposit, East Qinling, China".ORE GEOLOGY REVIEWS 127(2020):20.

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来源：地质与地球物理研究所

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