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Ringwoodite |
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Kudoh Y, Kuribayashi T, Mizobata H, Ohtami E |
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Physics and Chemistry of Minerals 27 (2000) 474-479 |
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Structure and cation disorder of hydrous ringwoodite, |
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gamma-Mg1.89Si0.98H0.30O4 |
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_database_code_amcsd 0008430 |
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8.0693 8.0693 8.0693 90 90 90 *Fd3m |
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.125 .125 .125 |
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atom x y z occ Biso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) |
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MgM 1/2 1/2 1/2 .92 .56 .0071 .0071 .0071 -.0009 -.0009 -.0009 |
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SiM 1/2 1/2 1/2 .025 .56 .0071 .0071 .0071 -.0009 -.0009 -.0009 |
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MgT 1/8 1/8 1/8 .05 .45 .0057 .0057 .0057 0 0 0 |
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SiT 1/8 1/8 1/8 .93 .45 .0057 .0057 .0057 0 0 0 |
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O .2439 .2439 .2439 .925 .69 .0087 .0087 .0087 -.0003 -.0003 -.0003 |
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OH .2439 .2439 .2439 .075 .69 .0087 .0087 .0087 -.0003 -.0003 -.0003 |
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