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DOI	10.1016/j.epsl.2021.117052
	Using Zn and Ni behavior during magnetite precipitation in banded iron formations to determine its biological or abiotic origin
	Han X.; Tomaszewski E.J.; Schoenberg R.; Konhauser K.O.; Amor M.; Pan Y.; Warter V.; Kappler A.; Byrne J.M.
发表日期	2021
ISSN	0012821X
卷号	568
英文摘要	There is longstanding controversy about the genesis of magnetite in banded iron formations (BIFs), particularly concerning whether it is of abiogenic or biogenic origin. The composition of trace elements within magnetite produced by magnetotactic bacteria has been proposed as a promising marker for its biological origin; however further experimental evidence is required to investigate whether this also holds true for iron-metabolizing bacteria. Here, we compared the behavior of zinc (Zn) and nickel (Ni) in magnetite produced either abiogenically (ferrihydrite reacting with dissolved Fe2+) or biogenically (ferrihydrite reacting with dissolved Fe2+ generated via the dissimilatory iron-reducing bacterium - DIRB - Shewanella oneidensis MR-1). These abiotic and biotic incubations were applied for transforming three ferrihydrite (Fh) substrates: (1) Control Fh without added trace elements; (2) Zn-coprecipitated ferrihydrite (ZnFh); and (3) Ni-coprecipitated ferrihydrite (NiFh) in both NaHCO3 and HEPES buffer. X-ray diffraction revealed magnetite as the dominant transformation product for all reaction conditions, while siderite was only detected in experiments containing NaHCO3 as buffer. Based on similar initial dissolved Ni and Zn concentrations, we found opposing behavior of Zn and Ni where Zn showed enrichment in abiogenic magnetite, while Ni was more enriched in biogenic magnetite. Combining supposed Zn and Ni concentrations in Precambrian seawater and magnetite mineral grains from three formations deposited at different ages (i.e. 3.75 Ga Nuvvuagittuq Supracrustal Belt, 2.45 Ga Weeli Wolli Iron Formation, and 1.88 Ga Sokoman Iron Formation), we reconstructed potential Zn and Ni partition coefficients between Precambrian seawater and magnetite minerals. The reconstructed potential Zn and Ni partition coefficients suggested that these magnetite minerals from three formations were abiogenic. These differing behaviors suggest the possibility of using Zn and Ni partition coefficient ratios as a means of determining the presence or absence of DIRB in the formation of ancient magnetite deposits. © 2021 Elsevier B.V.
关键词	BIFs mixed-valent iron oxide nickel Precambrian oceans zinc
英文关键词	Bacteria; Dissolution; Gallium; Iron; Magnetite; Nickel; Seawater; Sodium bicarbonate; Trace elements; Banded iron formations; Banded iron-formations; Banded-iron formations; Co-precipitated; Dissolved fe; Ferrihydrites; Mixed-valent iron oxide; Partition coefficient; Precambrian ocean; Traces elements; Zinc; abiotic factor; banded iron formation; biotic factor; iron oxide; magnetite; nickel; Precambrian; precipitation (chemistry); zinc; Bacteria (microorganisms); Shewanella oneidensis
语种	英语
来源期刊	Earth and Planetary Science Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/203115
作者单位	Geomicrobiology, Center for Applied Geosciences, University of Tübingen, Schnarrenbergstrasse 94-96, Tübingen, 72076, Germany; Biogeomagnetism Group, Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China; Isotope Geochemistry, Department of Geosciences, University of Tuebingen, Schnarrenbergstrasse 94-96, Tübingen, 72076, Germany; Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB, Canada; Aix-Marseille University, CNRS, CEA, UMR7265 Institute of Bioscience and Biotechnology of Aix-Marseille, CEA Cadarache, Saint-Paul-lez-Durance, F-13108, France; School of Earth Sciences, University of Bristol, Wills Memorial Building, Queens Road, Bristol, BS8 1RJ, United Kingdom
推荐引用方式 GB/T 7714	Han X.,Tomaszewski E.J.,Schoenberg R.,et al. Using Zn and Ni behavior during magnetite precipitation in banded iron formations to determine its biological or abiotic origin[J],2021,568.
APA	Han X..,Tomaszewski E.J..,Schoenberg R..,Konhauser K.O..,Amor M..,...&Byrne J.M..(2021).Using Zn and Ni behavior during magnetite precipitation in banded iron formations to determine its biological or abiotic origin.Earth and Planetary Science Letters,568.
MLA	Han X.,et al."Using Zn and Ni behavior during magnetite precipitation in banded iron formations to determine its biological or abiotic origin".Earth and Planetary Science Letters 568(2021).