Origin of ore-forming fluids of the Haigou gold deposit in the eastern Central Asian Orogenic belt, NE China: Constraints from H-O-He-Ar isotopes

doi:10.1016/j.jseaes.2017.01.018

CORC > 地质与地球物理研究所 > 中国科学院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

	Origin of ore-forming fluids of the Haigou gold deposit in the eastern Central Asian Orogenic belt, NE China: Constraints from H-O-He-Ar isotopes
	Zeng, Qingdong; He, Huaiyu; Zhu, Rixiang; Zhang, Song; Wang, Yongbin; Su, Fei
刊名	JOURNAL OF ASIAN EARTH SCIENCES
	2017-08-15
卷号	144 页码:384-397
关键词	Noble gas isotopes Stable isotopes Gold deposit Haigou NE China
ISSN号	1367-9120
DOI	10.1016/j.jseaes.2017.01.018
文献子类	Article
英文摘要	The Haigou lode deposit contains 40 t of gold at an average grade of 3.5 g/t, and is one of the largest deposits in the Jiapigou gold belt located along the eastern segment of the northern margin of the North China Craton. The deposit comprises 15 gold-bearing quartz veins hosted in a Carboniferous monzonite-monzogranite stock. Cretaceous dikes consisting of diorite, diabase, and granodiorite porphyries are well developed in the deposit. The diorite porphyry dikes (130.4 +/- 63 Ma) occur together with gold-bearing quartz veins in NNE- and NE-striking faults. Gold-bearing quartz veins crosscut the diorite porphyry dikes, and the veins are in turn crosscut by E-W-striking 124.6 +/- 2.2 Ma granodiorite porphyry dikes. The mineralization mainly occurs as auriferous quartz veins with minor amounts of sulfide minerals, including pyrite, galena, chalcopyrite, and molybdenite. Gold occurs as either native gold or calaverite. Common gangue minerals in the deposit include quartz, sericite, and calcite. The deposit is characterized by various types of hydrothermal alteration, including silicification, sericitization, chloritization, potassic alteration, and carbonatization. Three stages of hydrothermal activity have been recognized in the deposit: (1) a barren quartz stage; (2) a polymetallic sulfide (gold) stage; (3) a calcite stage. Fluid inclusions in hydrothermal pyrites have He-3/He-4 ratios of 03 to 3.3 Ra and Ar-40/Ar-36 ratios of 351 to 1353, indicating mixing of fluids of mantle and crustal origin. Hydrothermal quartz yielded delta O-18 values of -1.3 parts per thousand to +7.2 parts per thousand and 8D values of fluid inclusions in the quartz vary between -80 parts per thousand and -104 parts per thousand. These stable isotope data also suggest mixing of magmatic and meteoric fluids. Noble gas and stable isotopic data suggest that the ore fluids have a predominant mantle source with a significant crustal component. Based on the spatial association of gold-bearing quartz veins with early Cretaceous intrusions, and the H-O-He-Ar isotopic data from the deposit and intrusions, we propose that gold mineralization in the Haigou deposit was formed in an extensional setting and was related to the early Cretaceous, mantle-derived intrusions. (C) 2017 Elsevier Ltd. All rights reserved.
WOS关键词	METAMORPHIC CORE COMPLEX ; SAN-JUAN MOUNTAINS ; U-PB AGES ; OXYGEN ISOTOPE ; NORTHEAST CHINA ; JILIN PROVINCE ; HEBEI PROVINCE ; NOBLE-GASES ; FAULT ZONE ; MANTLE
WOS研究方向	Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000404312000023
资助机构	Major State Basic Research Program of China(2013 CB429805) ; National Special Program of the Deep Resources of China(2016YFC0600108) ; National Natural Science Foundation of China(41390443) ; Major State Basic Research Program of China(2013 CB429805) ; National Special Program of the Deep Resources of China(2016YFC0600108) ; National Natural Science Foundation of China(41390443) ; Major State Basic Research Program of China(2013 CB429805) ; National Special Program of the Deep Resources of China(2016YFC0600108) ; National Natural Science Foundation of China(41390443) ; Major State Basic Research Program of China(2013 CB429805) ; National Special Program of the Deep Resources of China(2016YFC0600108) ; National Natural Science Foundation of China(41390443)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/50254]
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	Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Zeng, Qingdong,He, Huaiyu,Zhu, Rixiang,et al. Origin of ore-forming fluids of the Haigou gold deposit in the eastern Central Asian Orogenic belt, NE China: Constraints from H-O-He-Ar isotopes[J]. JOURNAL OF ASIAN EARTH SCIENCES,2017,144:384-397.
APA	Zeng, Qingdong,He, Huaiyu,Zhu, Rixiang,Zhang, Song,Wang, Yongbin,&Su, Fei.(2017).Origin of ore-forming fluids of the Haigou gold deposit in the eastern Central Asian Orogenic belt, NE China: Constraints from H-O-He-Ar isotopes.JOURNAL OF ASIAN EARTH SCIENCES,144,384-397.
MLA	Zeng, Qingdong,et al."Origin of ore-forming fluids of the Haigou gold deposit in the eastern Central Asian Orogenic belt, NE China: Constraints from H-O-He-Ar isotopes".JOURNAL OF ASIAN EARTH SCIENCES 144(2017):384-397.