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Hawthorneite |
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Grey I E, Madsen I C, Haggerty S E |
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American Mineralogist 72 (1987) 633-636 |
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Structure of a new upper-mantle, magnetoplumbite-type phase, Ba(Ti3Cr4Fe4Mg)O19 |
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5.871 5.871 23.06 90 90 120 P6_3/mmc |
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atom x y z occ Biso |
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Ba 1/3 2/3 .75 .85 .70 |
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K 1/3 2/3 .75 .12 .70 |
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Cr1 0 0 0 .36 |
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Fe2 0 0 .2571 .5 .70 |
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Fe3 1/3 2/3 .0268 .64 .49 |
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Mg3 1/3 2/3 .0268 .36 .49 |
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Ti4 1/3 2/3 .1888 .35 |
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Cr5 .1662 .3324 -.1063 .62 .44 |
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Ti5 .1662 .3324 -.1063 .17 .44 |
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Fe5 .1662 .3324 -.1063 .21 .44 |
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O1 0 0 .1512 .44 |
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O2 1/3 2/3 -.0599 .43 |
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O3 .1878 .3756 .25 1.36 |
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O4 .1483 .2966 .0548 .39 |
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O5 .5020 .0040 .1508 .49 |
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