Mineralogical and micromorphological characteristics of Si-Fe-Mn oxyhydroxides from the PACMANUS hydrothermal field, Eastern Manus Basin

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	Mineralogical and micromorphological characteristics of Si-Fe-Mn oxyhydroxides from the PACMANUS hydrothermal field, Eastern Manus Basin
	Zeng ZhiGang 1; Chen Shuai 1,2; Wang XiaoYuan 1; Ouyang HeGen 1,2; Yin XueBo 1; Li ZhaoXue 1
刊名	SCIENCE CHINA-EARTH SCIENCES
	2012-12-01
卷号	55 期号:12 页码:2039-2048
关键词	Si-Fe-Mn oxyhydroxide nontronite microbe PACMANUS hydrothermal field Eastern Manus Basin
ISSN号	1674-7313
通讯作者	Zeng, ZG (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Seafloor Hydrothermal Act Lab, Qingdao 266071, Peoples R China.
英文摘要	The mineralogical and micromorphological characteristics of Si-Fe-Mn oxyhydroxides from the dacite-hosted PACMANUS hydrothermal field were analyzed. The samples are poorly crystallized Si-Fe-Mn oxyhydroxides with minor birnessite, todorokite, nontronite, goethite, and opal-A. There are some microtextures which are rather like fossil microbes such as the filamentous silica and the hollow pipes. Flakes of nontronite crystals are found either forming a honeycomb texture or distributed on the surface of the hollow pipes. Nontronite is the product precipitated from low-temperature hydrothermal fluids, and microbes may play a role in its formation. Si-Fe-Mn oxyhydroxides have two kinds of nuclei: Si-Mn nuclei and Si nuclei, both enveloped by the similar Si-Fe outer layer, existing in the rod-shaped oxyhydroxide and spheroidal oxyhydroxide, respectively. In the Si-Mn nuclei, the concentration of SiO2 is between 39.32 wt% and 86.31 wt%, and MnO concentration is between 4.97 wt% and 27.01 wt%, but Fe2O3 concentration is very low (0.54 wt%-3.43 wt%). In the Si nucleus the concentration of SiO2 is 90.17 wt%, but concentration of MnO and Fe2O3 are low, with 0.06 wt% and 3.47 wt%, respectively. The formation of the Si-Mn nucleus is closely related to microbes, whereas the Si nucleus is of inorganic origin.
学科主题	Geosciences, Multidisciplinary
收录类别	SCI
原文出处	10.1007/s11430-012-4536-7
语种	英语
WOS记录号	WOS:000312346200011
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/12508]
专题	海洋研究所_海洋地质与环境重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Seafloor Hydrothermal Act Lab, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zeng ZhiGang,Chen Shuai,Wang XiaoYuan,et al. Mineralogical and micromorphological characteristics of Si-Fe-Mn oxyhydroxides from the PACMANUS hydrothermal field, Eastern Manus Basin[J]. SCIENCE CHINA-EARTH SCIENCES,2012,55(12):2039-2048.
APA	Zeng ZhiGang,Chen Shuai,Wang XiaoYuan,Ouyang HeGen,Yin XueBo,&Li ZhaoXue.(2012).Mineralogical and micromorphological characteristics of Si-Fe-Mn oxyhydroxides from the PACMANUS hydrothermal field, Eastern Manus Basin.SCIENCE CHINA-EARTH SCIENCES,55(12),2039-2048.
MLA	Zeng ZhiGang,et al."Mineralogical and micromorphological characteristics of Si-Fe-Mn oxyhydroxides from the PACMANUS hydrothermal field, Eastern Manus Basin".SCIENCE CHINA-EARTH SCIENCES 55.12(2012):2039-2048.