Divalent chromium in ferropericlase inclusions in lower-mantle diamonds revealed by micro-XANES measurements

Shoko Odake, Satoshi Fukura, Masashi Arakawa, Atsuyuki Ohta, Ben Harte, Hiroyuki Kagi

研究成果: Contribution to journalArticle査読

7 被引用数 (Scopus)

抄録

Chromium. K-edge X-ray absorption near-edge structure (XANES) spectra of natural ferropericlase were measured using an X-ray microbeam from a synchrotron radiation source to estimate the valence state of Cr. Measured samples were inclusions collected from lower-mantle diamonds. The obtained results revealed that divalent chromium is present in the materials in the lower mantle and that the proportion of Cr2+ in the total Cr content varied among the samples. The valence state of chromium in the inclusions in diamonds is a potential indicator of the redox conditions in the lower mantle.

本文言語英語
ページ(範囲)350-353
ページ数4
ジャーナルJournal of Mineralogical and Petrological Sciences
103
5
DOI
出版ステータス出版済み - 12 1 2008
外部発表はい

All Science Journal Classification (ASJC) codes

  • 地球物理学
  • 地質学

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