Ore-forming fluids in the Dongping gold deposit, northwestern Hebei Province

	Ore-forming fluids in the Dongping gold deposit, northwestern Hebei Province
	Fan, HR ; Xie, YH ; Zhai, MG
刊名	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
	2001-08-01
卷号	44 期号:8 页码:748-757
关键词	fluid inclusion gold mineralization Dongping northwestern Hebei Province
ISSN号	1006-9313
文献子类	Article
英文摘要	The Dongping gold deposit is contained within an inner contacting zone of the Hercynian Shuiquangou alkali syenite. The ores occur as veins or as replacement bodies. Fluid inclusion observation shows that in early and main mineralizing stages inclusion types are gas and gas-liquid inclusions, respectively. Gas inclusions occur in isolation in vein quartz, their homogenization temperature is 372-306 degreesC, and salinity 3.7-1.0 wt% NaCl. Gas-liquid inclusions occur in clusters or healed fractures but do not cut quartz boundary with homogenization temperature 342-267 degreesC and salinity 1.9-0.8 wt% NaCl. Stable isotope measurements show that at main gold mineralization, hydrogen and oxygen isotopic ratios of the mineralizing fluids are -70.8 parts per thousand -108.4 parts per thousand and 2.44 parts per thousand -4.05 parts per thousand, respectively. Primary ore fluids in Dongping are higher temperature and lower salinity NaCl-CO2-H2O fluids, and come from Yanshanian granitic magmatism. Fluid immiscibility, fluid-rock interactions and meteoric water adding were main reasons for gold deposition.
WOS关键词	QUARTZ VEINS ; INCLUSION EVIDENCE ; EVOLUTION
WOS研究方向	Geology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000171966200009
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/76491]
专题	中国科学院地质与地球物理研究所
通讯作者	Fan, HR
作者单位	1.Chinese Acad Sci, Res Ctr Mineral Resources Explorat, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Fan, HR,Xie, YH,Zhai, MG. Ore-forming fluids in the Dongping gold deposit, northwestern Hebei Province[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2001,44(8):748-757.
APA	Fan, HR,Xie, YH,&Zhai, MG.(2001).Ore-forming fluids in the Dongping gold deposit, northwestern Hebei Province.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,44(8),748-757.
MLA	Fan, HR,et al."Ore-forming fluids in the Dongping gold deposit, northwestern Hebei Province".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 44.8(2001):748-757.