The characteristics and its geological significance of fluid inclusions in Haigou lode gold deposit, Jilin Province

	The characteristics and its geological significance of fluid inclusions in Haigou lode gold deposit, Jilin Province
	Zhang Song 1,2; Zeng QingDong 1; Liu JianMing 1; Wang ZaiCong 1,2; Wang YongBin 1,2; Ren DeKui ; Gao JiHe
刊名	ACTA PETROLOGICA SINICA
	2011-05-01
卷号	27 期号:5 页码:1287-1298
关键词	Lode gold deposit Fluid inclusions Evolution of ore-forming fluid Haigou
ISSN号	1000-0569
文献子类	Article
英文摘要	Haigou gold deposit, located in the southeast of the Jiapigou-Haigou gold belt in Jilin Province, is a typical lode gold deposit. It is hosted by Hecynian granitoid complex, and consists of gold-bearing quartz veins. It can be devided into four ore-forming stages: I, quartz-K-feldspar; II, quartz-pyrites, occasionally with gold; III, polymetallic sulfides-quartz -gold; and IV, carbonate quartz-pyrite stage. Four types of fluid inclusions are identified in auriferous quartz veins; (1) H(2)O-CO(2)-NaCl inclusions; (2) CO(2) inclusions; (3) H(2)O-NaCl inclusions; (4) a few high-salinity inclusions with daughter mineral. Homogenization temperature of the inclusions in the three stages are range from 227 similar to 497 degrees C (II stage), 189 similar to 427 degrees C (III stage), 130 similar to 267 degrees C (IV stage), and salinity are 0.53% similar to 10.23% NaCleqv, 0. 35% similar to 9.23% NaCleqv, 0.18% similar to 3.27% NaCleqv respectively. Inclusions with variable CO(2) phase ratio within same clusters having similar homogenization temperature shows that immiscibility is common. The homogenization temperature of inclusions in the II and III stages are higher than the IV stage; and the salinity of inclusions are higher in the bottom of the orebody. The ore-bearing fluids were low salinity H(2)O-CO(2)-NaCl +/- CH(4). The composition of gas phase in fluid inclusions are dominanted by H(2)O, CO(2), N(2), CH(4), C(2)H(6) with minor H(2)S; and liquid phase composition are Na(+), K(+), Ca(2+) and Cl(-) with minor Mg(2+) and F(-). It is proposed that the onset of gold deposition in Haigou gold deposit is related to the onset of fluid unmixing with the decreasing of fluid pressure.
WOS关键词	ORE-FORMING FLUIDS ; EASTERN CHINA ; JIAODONG PENINSULA ; WESTERN-AUSTRALIA ; OROGENIC GOLD ; MINERALIZATION ; EVOLUTION ; TRANSPORT ; GRANITE ; METALLOGENESIS
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000292712600005
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/74420]
专题	中国科学院地质与地球物理研究所
通讯作者	Zhang Song
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang Song,Zeng QingDong,Liu JianMing,et al. The characteristics and its geological significance of fluid inclusions in Haigou lode gold deposit, Jilin Province[J]. ACTA PETROLOGICA SINICA,2011,27(5):1287-1298.
APA	Zhang Song.,Zeng QingDong.,Liu JianMing.,Wang ZaiCong.,Wang YongBin.,...&Gao JiHe.(2011).The characteristics and its geological significance of fluid inclusions in Haigou lode gold deposit, Jilin Province.ACTA PETROLOGICA SINICA,27(5),1287-1298.
MLA	Zhang Song,et al."The characteristics and its geological significance of fluid inclusions in Haigou lode gold deposit, Jilin Province".ACTA PETROLOGICA SINICA 27.5(2011):1287-1298.