Determination of the Fe oxidation state of the Chassigny kaersutite: A microXANES spectroscopic study

Akira Monkawa, Takashi Mikouchi, Eisuke Koizumi, Kazumasa Sugiyama, Masamichi Miyamoto

研究成果: Article査読

19 被引用数 (Scopus)

抄録

In order to elucidate the formation of low-H kaersutites in Martian meteorites, the Fe3+/ΣFe ratio of Chassigny kaersutites in magmatic inclusions was directly determined by the synchrotron microXANES analysis. XANES analysis for standard kaersutites with known Fe3+/ΣFe ratios shows a linear relationship between centroid energy positions of XANES pre-edge spectra and the Fe3+/ΣFe ratio. Based on the linear relationship, the Fe3+/ΣFe ratio of Chassigny kaersutites is estimated to be about 0.05. The low Fe3+/ΣFe ratio clearly suggests that low-H kaersutites in Chassigny are not likely to be formed by the oxidation-dehydrogenation reactions. The low-H content of the Chassigny kaersutites is mainly due to the presence of a Ti oxy-component.

本文言語English
ページ(範囲)1321-1329
ページ数9
ジャーナルMeteoritics and Planetary Science
41
9
DOI
出版ステータスPublished - 2006 9
外部発表はい

ASJC Scopus subject areas

  • Geophysics
  • Space and Planetary Science

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