Ore-Forming Fluids as Sampled by Sulfide- and Quartz-Hosted Fluid Inclusions in the Jinwozi Lode Gold Deposit, Eastern Tianshan Mountains of China

doi:10.1111/rge.12036

	Ore-Forming Fluids as Sampled by Sulfide- and Quartz-Hosted Fluid Inclusions in the Jinwozi Lode Gold Deposit, Eastern Tianshan Mountains of China
	Pan, Xiaofei 3; Liu, Wei 1; Hou, Zengqian
刊名	RESOURCE GEOLOGY
	2014
卷号	64 期号:3 页码:183-208
关键词	eastern Tianshan Mountains fluid inclusion hosted in sulfide gas composition H- and O-isotopes lode gold deposit
ISSN号	1344-1698
DOI	10.1111/rge.12036
英文摘要	The Jinwozi lode gold deposit in the eastern Tianshan Mountains of China includes auriferous quartz veins and network quartz veins that are exemplified by the Veins 3 and 210, respectively. This paper presents H-, O-isotope compositions and gas compositions of fluid inclusions hosted in sulfides and quartz, and S-, Pb-isotope compositions of sulfide separates collected from the principal Stage 2 ores in Veins 3 and 210. Fluid inclusions trapped in quartz and sphalerite are pseudo-secondary and primary. They were trapped from the fluids during the successive or alternate precipitation of quartz with sulfides. H- and O-isotope compositions of fluid inclusion of three pyrite and one quartz separates from Vein 210 plot within the field of degassed melt, which is evidence for the incorporation of magmatic fluid as well with some possibility of contribution of metamorphic water to the hydrothermal system since the two datasets show a higher oxygen isotopic ratio than those of degassed melt. However, D and 18O values of fluid inclusions hosted in sulfides and quartz from Vein 3 are distinctly lower than those from Vein 210. In addition, salinities of fluid inclusion from Vein 3, approximately 3 to 6 wt% NaCl equivalent, are considerably lower than those from Vein 210, which are approximately 8 to 14 wt% NaCl equivalent. Ore-forming fluids of Veins 3 and 210 have migrated through the relatively high and low levels in the imbricate-thrust column where rock deformation is characterized by dilatancy or ductile-brittle transition, respectively. Therefore, the ore-forming fluid of Vein 3 is interpreted to have mixed with greater amounts of meteoric-derived groundwater than that of Vein 210. Fluid inclusions hosted in sulfides contain considerably higher abundances of gaseous species of CO2, N2, H2S, and so on, than those hosted in quartz. Many of these gaseous species exhibit linear correlations with H2O. These linear trends are interpreted in terms of mixing between magmatic fluid and groundwater. The relative enrichment of gaseous species in fluid inclusions hosted in sulfides, coupled with the banded ore structure, suggests that the magmatic fluid was involved with the ore-forming fluid in pulsation. Lead isotope compositions of 21 pyrite and galena separates form a linear trend, suggesting mixing of metallic materials from diverse reservoirs. The 34S values of pyrite and galena range from +5.6 parts per thousand to +7.9 parts per thousand and from +3.1 parts per thousand to +6.3 parts per thousand, respectively, indicating sulfur of the Jinwozi deposit has been leached mainly from the granodiorite and partly from the Jinwozi Formation by the circulating ore-forming fluid.
学科主题	矿床地质
WOS关键词	PROVINCES ; PYRITE ; SPHALERITE ; SYSTEMS ; MAGMAS ; OXYGEN
WOS研究方向	Geology ; Mineralogy
语种	英语
出版者	WILEY-BLACKWELL
WOS记录号	WOS:000338031100001
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40595]
专题	中国地质科学院地质研究所
作者单位	1.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China 2.Chinese Acad Sci, Key Lab Mineral Resources, Inst Geol & Geophys, Beijing, Peoples R China 3.中国地质科学院地质研究所
推荐引用方式 GB/T 7714	Pan, Xiaofei,Liu, Wei,Hou, Zengqian. Ore-Forming Fluids as Sampled by Sulfide- and Quartz-Hosted Fluid Inclusions in the Jinwozi Lode Gold Deposit, Eastern Tianshan Mountains of China[J]. RESOURCE GEOLOGY,2014,64(3):183-208.
APA	Pan, Xiaofei,Liu, Wei,&Hou, Zengqian.(2014).Ore-Forming Fluids as Sampled by Sulfide- and Quartz-Hosted Fluid Inclusions in the Jinwozi Lode Gold Deposit, Eastern Tianshan Mountains of China.RESOURCE GEOLOGY,64(3),183-208.
MLA	Pan, Xiaofei,et al."Ore-Forming Fluids as Sampled by Sulfide- and Quartz-Hosted Fluid Inclusions in the Jinwozi Lode Gold Deposit, Eastern Tianshan Mountains of China".RESOURCE GEOLOGY 64.3(2014):183-208.