TY - JOUR
T1 - Determination of the Fe oxidation state of the Chassigny kaersutite
T2 - A microXANES spectroscopic study
AU - Monkawa, Akira
AU - Mikouchi, Takashi
AU - Koizumi, Eisuke
AU - Sugiyama, Kazumasa
AU - Miyamoto, Masamichi
PY - 2006/9
Y1 - 2006/9
N2 - 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.
AB - 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.
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U2 - 10.1111/j.1945-5100.2006.tb00524.x
DO - 10.1111/j.1945-5100.2006.tb00524.x
M3 - Article
AN - SCOPUS:33749255950
SN - 1086-9379
VL - 41
SP - 1321
EP - 1329
JO - Meteoritics and Planetary Science
JF - Meteoritics and Planetary Science
IS - 9
ER -