Gold mineralizing efficiency during hydrothermal alteration of the Mesozoic granitoids in the northwest Jiaodong Peninsula: Contrasting conditions between the Guojialing and Linglong plutons

doi:10.1016/j.chemer.2017.08.001

	Gold mineralizing efficiency during hydrothermal alteration of the Mesozoic granitoids in the northwest Jiaodong Peninsula: Contrasting conditions between the Guojialing and Linglong plutons
	Xu, Wen-Gang 1,2; Fan, Hong-Rui 1,3; Yang, Kui-Feng 1,3; Hu, Fang-Fang 1,3; Cai, Ya-Chun 1
刊名	CHEMIE DER ERDE-GEOCHEMISTRY
	2017
卷号	77 期号:3 页码:387-398
关键词	Hydrothermal Alteration Gold Mineralizing Efficiency Gem-selektor Linglong Granite Guojialing Granodiorite Jiaodong Peninsula North China Craton
ISSN号	0009-2819
DOI	10.1016/j.chemer.2017.08.001
文献子类	Article
英文摘要	Mesozoic granitoids were extensively altered by hydrothermal fluids in the northwest Jiaodong Peninsula, and gold precipitated from the fluids developing prevalent mineralization in this district. The 160-158 Ma Linglong granite and 130-120 Ma Guojialing granodiorite are the major Mesozoic granitoids in this district, both of which are hydrothermally altered and intimately associated with gold mineralization. Although numerous studies were carried out by previous researchers, mainly focusing on tectonics, lithology, mineralogy, geochronology, and fluid geochemistry, knowledge about hydrothermal alteration processes of these granitoids and their gold mineralization efficiency (i.e. which one is more effective to precipitate the gold from its parent solution) is far beyond clear illumination. Geochemical simulation software GEM-Selektor (based on the Gibbs energy minimization algorithm) was applied in this study, which aims to test the gold mineralization efficiency of these two granitoids during the hydrothermal alteration processes. Simulation results indicate that solutions in equilibrium with the Linglong granite are capable of hosting more sulfur than that with the Guojialing granodiorite, since the latter contains more Fe. However, the solutions with these two granitoids display similar gold solubility. "Bulk cooling" simulation results show that the gold mineralization pattern is similar between the Linglong and Guojialing case; "Rock titration" simulation results reveal that the Guojialing granodiorite is prone to precipitate gold more strongly than the Linglong granite, as gold-bearing solutions (or ore-forming fluids) flowing-through at high temperature, equivalent to a deeper level, implying that if the gold mineralization is developed at depth, the Guojialing rock will precipitate more gold. If the gold-bearing solution flow-through the wall rocks relatively fast, and gold mineralization fails to take place, then the Guojialing granodiorite is probably unfavorable for subsequent gold enrichment of the ore-forming fluid. The Ling long granite will precipitate the gold more efficiently from its parent solution at low temperature or at a shallower level, and this is consistent with previous mining prospecting results. Therefore, we suggest that the Guojialing granodiorite should be treated as the main target during future deep prospecting project. (C) 2017 Elsevier GmbH. All rights reserved.
WOS关键词	PARTIAL MOLAL PROPERTIES ; ANDALUSITE PLUS QUARTZ ; ORE-FORMING FLUIDS ; EASTERN CHINA ; AQUEOUS-SOLUTIONS ; HIGH-PRESSURES ; THERMODYNAMIC DESCRIPTION ; SANSHANDAO DEPOSIT ; CHLORIDE SOLUTIONS ; DEGREES-C
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	ELSEVIER GMBH, URBAN & FISCHER VERLAG
WOS记录号	WOS:000416196500002
资助机构	National Natural Science Foundation of China(41502091 ; National Natural Science Foundation of China(41502091 ; Special Fund for Scientific Research in the Public Interest of Ministry of Land and Resources(201411024-5) ; Special Fund for Scientific Research in the Public Interest of Ministry of Land and Resources(201411024-5) ; 41672094) ; 41672094) ; National Natural Science Foundation of China(41502091 ; National Natural Science Foundation of China(41502091 ; Special Fund for Scientific Research in the Public Interest of Ministry of Land and Resources(201411024-5) ; Special Fund for Scientific Research in the Public Interest of Ministry of Land and Resources(201411024-5) ; 41672094) ; 41672094) ; National Natural Science Foundation of China(41502091 ; National Natural Science Foundation of China(41502091 ; Special Fund for Scientific Research in the Public Interest of Ministry of Land and Resources(201411024-5) ; Special Fund for Scientific Research in the Public Interest of Ministry of Land and Resources(201411024-5) ; 41672094) ; 41672094) ; National Natural Science Foundation of China(41502091 ; National Natural Science Foundation of China(41502091 ; Special Fund for Scientific Research in the Public Interest of Ministry of Land and Resources(201411024-5) ; Special Fund for Scientific Research in the Public Interest of Ministry of Land and Resources(201411024-5) ; 41672094) ; 41672094)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/82058]
专题	中国科学院地质与地球物理研究所
通讯作者	Fan, Hong-Rui
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.PowerChina Huadong Engn Corp Ltd, Hangzhou 311122, Zhejiang, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Xu, Wen-Gang,Fan, Hong-Rui,Yang, Kui-Feng,et al. Gold mineralizing efficiency during hydrothermal alteration of the Mesozoic granitoids in the northwest Jiaodong Peninsula: Contrasting conditions between the Guojialing and Linglong plutons[J]. CHEMIE DER ERDE-GEOCHEMISTRY,2017,77(3):387-398.
APA	Xu, Wen-Gang,Fan, Hong-Rui,Yang, Kui-Feng,Hu, Fang-Fang,&Cai, Ya-Chun.(2017).Gold mineralizing efficiency during hydrothermal alteration of the Mesozoic granitoids in the northwest Jiaodong Peninsula: Contrasting conditions between the Guojialing and Linglong plutons.CHEMIE DER ERDE-GEOCHEMISTRY,77(3),387-398.
MLA	Xu, Wen-Gang,et al."Gold mineralizing efficiency during hydrothermal alteration of the Mesozoic granitoids in the northwest Jiaodong Peninsula: Contrasting conditions between the Guojialing and Linglong plutons".CHEMIE DER ERDE-GEOCHEMISTRY 77.3(2017):387-398.