Cation vacancies and possible hydrogen atom positions in Fe-bearing hydrous forsterite, Mg_<1.85>Fe_<0.14>Si_<0.99>H_<0.06>O_4, synthesized at 13.5GPa and 1400℃

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概要

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• The crystal structure of a single crystal of synthetic Fe-bearing hydrous forsterite (Mg1.85Fe0.14Si0.99H0.06O4) synthesized at 13.5 GPa and 1400 °C has been investigated using X-ray diffractometry. The data show a site occupancy of 96(3)%Mg + 4(1)%Fe + 0(4)%[] at the M1 site and a site occupancy of 89(3)%Mg + 8(1)%Fe + 3(4)%[] at the M2 site, indicating that the cation vacancies at the octahedral M sites predominantly occur at the M2 site. The occupancy at the T site was 99.0%Si(fixed) + 0(1)%Fe + 1(1)%[], indicating a small number of vacancies with no detectable Fe occupation. A comparison of the calculated bond distances and reported stretching frequencies of the polarized IR spectra shows that the most probable H atom locations are near to the edges of the MO6.

• 日本鉱物科学会の論文
• 2007-10-01

著者

• OHTANI Eiji

  Institute of Mineralogy, Petrology, and Economic Geology, Faculty of Science, Tohoku University

• Litasov Konstantin

  Institute Of Mineralogy Petrology And Economic Geology Faculty Of Science Tohoku University

• Ohtani Eiji

  Inst. Of Mineralogy Petrology And Economic Geology Graduate School Of Sci. Tohoku Univ.

• Ohtani Eiji

  Institute Of Mineralogy Petrology And Economic Geology Faculty Of Science Tohoku University

• Kudoh Yasuhiro

  Inst. Of Mineralogy Petrology And Economic Geology Fac. Of Sci. Tohoku Univ.

• Kudoh Yasuhiro

  Institute Of Mineralogy Petrology And Economic Geology Faculty Of Science Tohoku University

• Kudoh Yasuhiro

  Institute Of Mineralogy Petrology And Economic Geology Tohoku University

• KURIBAYASHI Takahiro

  Institute of Mineralogy, Petrology, and Economic Geology, Faculty of Science, Tohoku University

• Kuribayashi Takahiro

  Institute Of Mineralogy Petrology And Economic Geology Faculty Of Science Tohoku University

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