Dust to dust: Evidence for the formation of “primary” hematite dust in banded iron formations via oxidation of iron silicate nanoparticles

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• 作者：Birger Rasmussen^a ; ^{B.Rasmussen@curtin.edu.au" class="auth_mail" title="E-mail the corresponding author} ; Janet R. Muhling^a ; ^b ; Alexandra Suvorova^b ; Bryan Krapež^a
• 关键词：Banded iron formations ; Hematite ; Greenalite ; Hamersley Group ; Paleoproterozoic ; Ocean chemistry
• 刊名：Precambrian Research
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：284
• 期：Complete
• 页码：49-63
• 全文大小：8822 K

文摘

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d="p0005">Hematite dust in major BIF formed by replacement of iron-silicate nanoparticles.

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d="p0010">Hematite dust is not a reliable proxy for relict iron oxide/hydroxide precipitates.

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d="p0015">Oxidizing fluids modified the redox state and mineralogy of BIFs after deposition.

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d="p0020">Replacement origin for hematite negates its use to infer ancient redox conditions.

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d="p0025">Secondary origin for hematite explains lack of primary magnetic remanence in BIFs.

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