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Dravite |
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Grice J D, Ercit T S |
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Neues Jahrbuch fur Mineralogie, Abhandlungen 165 (1993) 245-266 |
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Ordering of Fe and Mg in the tourmaline crystal structure: The correct formula |
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Sample: Dravite 43230 |
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Locality: Yinnietharra, Western Australia |
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_database_code_amcsd 0018792 |
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15.941 15.941 7.201 90 90 120 R3m |
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atom x y z occ Uiso |
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NaX 0 0 .2368 .82 .0214 |
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CaX 0 0 .2368 .09 .0214 |
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MgY .12484 .06242 .6325 .7433 .0108 |
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AlY .12484 .06242 .6325 .233 .0108 |
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LiY .12484 .06242 .6325 .0007 .0108 |
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Fe2Y .12484 .06242 .6325 .01 .0108 |
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Fe3Y .12484 .06242 .6325 .01 .0108 |
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AlZ .29795 .26162 .6121 .9017 .0046 |
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MgZ .29795 .26162 .6121 .0833 .0046 |
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TiZ .29795 .26162 .6121 .015 .0046 |
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SiT .19182 .18993 0 .9833 .0052 |
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BT .19182 .18993 0 .0133 .0052 |
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TiT .19182 .18993 0 .0033 .0052 |
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B .1098 .2196 .4545 .0063 |
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OH1 0 0 .7720 .58 .0108 |
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F1 0 0 .7720 .17 .0108 |
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O1 0 0 .7720 .25 .0108 |
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O2 .06098 .1220 .4850 .0112 |
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O3 .26438 .13219 .5112 .0123 |
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O4 .09317 .18634 .0700 .0102 |
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O5 .18362 .09181 .0914 .0104 |
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O6 .1957 .1856 .7768 .0091 |
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O7 .2850 .28475 .0790 .0084 |
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O8 .2096 .2702 .4410 .0096 |
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H3 .262 .131 .406 .0100 |
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