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Werdingite |
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Niven M L, Waters D J, Moore J M |
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American Mineralogist 76 (1991) 246-256 |
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The crystal structure of werdingite, (Mg,Fe)2Al12(Al,Fe)2Si4(B,Al)4O37, and |
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its relationship to sillimanite, mullite and grandidierite |
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7.995 8.152 11.406 110.45 110.85 84.66 P-1 |
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atom x y z occ Uiso |
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Fe41 .6624 .1674 .0827 .21 .0073 |
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Al41 .6624 .1674 .0827 .79 .0073 |
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Al61 0 0 0 .5 .0053 |
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Al62 .0068 .0020 .2564 .0044 |
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Al63 0 0 .5 .5 .0040 |
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Al64 .5 .5 0 .5 .0049 |
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Al65 .5046 .4952 .2506 .0040 |
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Al66 .5 .5 .5 .5 .0036 |
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Al51 .1523 .3177 .7413 .0041 |
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Al52 .2297 .6777 .3522 .0042 |
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Fe51 .1209 .3153 .2353 .16 .0049 |
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Mg51 .1209 .3153 .2353 .84 .0049 |
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Si41 .6496 .1554 .3354 .0041 |
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Si42 .3503 .8406 .1812 .0040 |
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B31 .2256 .2706 .5019 .0059 |
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B32 .2261 .2652 -.0048 .77 .0047 |
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Al32 .2261 .2652 -.0048 .23 .0047 |
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B42 .2705 .2105 -.0071 .77 .0021 |
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Al42 .2705 .2105 -.0071 .23 .0021 |
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O1 .0278 .5437 .2690 .0093 |
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O2 .1579 .2009 -.1471 .0077 |
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O3 .1615 .2037 .5752 .0064 |
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O4 .6175 .2732 .2379 .0086 |
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O5 .6241 .2768 -.0391 .0088 |
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O6 .6330 .2875 .4762 .0063 |
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O7 .6434 .5626 .1768 .0058 |
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O8 .6403 .6034 -.0627 .0061 |
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O9 .3613 .7080 .2620 .0064 |
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O10 .3523 .4482 .3258 .0047 |
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O11 .1524 .1984 .0637 .0107 |
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O12 .1015 -.1238 .3714 .0078 |
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O13 .1580 .2014 .3662 .0081 |
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O14 .1525 -.0762 .1468 .0060 |
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O15 -.1479 .0815 .3609 .0054 |
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O16 -.0985 .1245 .1342 .0107 |
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O17 .3497 .4052 .5655 .0057 |
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O18 .5042 -.0061 .2692 .0106 |
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O19A .5905 -.0503 .0107 .25 .0108 |
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O19B .5167 .0003 .0050 .25 .0072 |
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