Iron and sulfur isotopes of sulfides from the Wocan hydrothermal field on the Carlsberg Ridge, Indian Ocean

doi:10.1016/j.oregeorev.2020.103971

CORC > 海洋研究所 > 中国科学院海洋研究所 > 深海极端环境与生命过程研究中心

	Iron and sulfur isotopes of sulfides from the Wocan hydrothermal field on the Carlsberg Ridge, Indian Ocean
	Wang, Shujie 1,3,4; Huang, Jing 1,4; Zhai, Shikui 2
刊名	ORE GEOLOGY REVIEWS
	2021-06-01
卷号	133 页码:9
关键词	Hydrothermal sulfide Sulfur isotope Iron isotope Wocan hydrothermal field Carlsberg Ridge
ISSN号	0169-1368
DOI	10.1016/j.oregeorev.2020.103971
通讯作者	Huang, Jing(hjmail@qdio.ac.cn)
英文摘要	The basalt-hosted Wocan hydrothermal field (WHF) was identified in 2013 during Chinese Dayang 28th cruise, which is located on the slow-spreading Carlsberg Ridge, northwest Indian Ocean. Few investigation has been carried out on the hydrothermal activities and associated sulfide deposit in this area. Herein, we report Fe and S isotope compositions of sulfide minerals including chalcopyrite, bornite, pyrite and sphalerite collected from the WHF. The results showed that all sulfide minerals display small delta S-34 variations (2.44% to 5.37%, with an average of 4.00%), and a wide delta Fe-56 range (-2.05% to 0.10%, with an average of -0.92%). Sulfur and iron isotopes in paired pyrite and chalcopyrite minerals reveal that it did not reach the equilibrium fractionation during pyrite precipitation, and support that the FeS precipitates first during the pyrite formation. The delta Fe-56 values of chalcopyrite and concurrent bornite are characterized by a well-defined negative correlation, which may be related to the repeated dissolution-reprecipitation of these copper-bearing sulfides under Fe-limited conditions. Most pyrites from the WHF demonstrate a positive correlation between delta Fe-56 and delta S-34 values, in accord with those from other hydrothermal fields, which can be explained by the temperature gradient and similar degrees of isotope exchange in the stable hydrothermal system. Conversely, the delta Fe-56 and delta S-34 values of chalcopyrite exhibit a slightly negative correlation, in which the temperature gradient can explain the negative correlation, but cannot cover the wide ranges of delta Fe-56 and delta S-34 values. More work on fractionation parameters and chalcopyrite formation mechanisms is still needed. In summary, the coupling of Fe and S isotopes is a useful tool in helping to delineate processes of sulfide mineralization in hydrothermal systems
资助项目	Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB42000000] ; Natural Science Foundation of China[41806061] ; Natural Science Foundation of China[41673002] ; Strategic Priority Research Program (A) of the Chinese Academy of Sciences[XDA22050103] ; Taishan Scholar Program of Shandong[ts201712075] ; AoShan Talents Cultivation Program - Qingdao National Laboratory for Marine Science and Technology[2017ASTCP-OS07]
WOS研究方向	Geology ; Mineralogy ; Mining & Mineral Processing
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000647424000003
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/170998]
专题	海洋研究所_深海极端环境与生命过程研究中心
通讯作者	Huang, Jing
作者单位	1.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China 2.Ocean Univ China, Coll Marine Geosci, Minist Educ, Key Lab Submarine Geosci & Prospecting Tech, Qingdao 266100, Peoples R China 3.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Mineral Resources, Qingdao 266237, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Wang, Shujie,Huang, Jing,Zhai, Shikui. Iron and sulfur isotopes of sulfides from the Wocan hydrothermal field on the Carlsberg Ridge, Indian Ocean[J]. ORE GEOLOGY REVIEWS,2021,133:9.
APA	Wang, Shujie,Huang, Jing,&Zhai, Shikui.(2021).Iron and sulfur isotopes of sulfides from the Wocan hydrothermal field on the Carlsberg Ridge, Indian Ocean.ORE GEOLOGY REVIEWS,133,9.
MLA	Wang, Shujie,et al."Iron and sulfur isotopes of sulfides from the Wocan hydrothermal field on the Carlsberg Ridge, Indian Ocean".ORE GEOLOGY REVIEWS 133(2021):9.