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Dravite |
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Marschall H R, Ertl A, Hughes J M, McCammon C A |
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European Journal of Mineralogy 16 (2004) 817-823 |
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Metamorphic Na- and OH-rich disordered dravite with tetrahedral boron, |
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associated with omphacite, from Syros, Greece: chemistry and structure |
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Sample: SY309B |
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Locality: Syros, Greece |
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_database_code_amcsd 0007080 |
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15.9443 15.9443 7.2094 90 90 120 R3m |
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atom x y z occ Uiso |
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NaX 0 0 .25 .96 .0245 |
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CaX 0 0 .25 .02 .0245 |
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MgY .12515 .062575 -.3614 .43 .0112 |
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AlY .12515 .062575 -.3614 .33 .0112 |
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Fe2+Y .12515 .062575 -.3614 .15 .0112 |
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Fe3+Y .12515 .062575 -.3614 .06 .0112 |
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TiY .12515 .062575 -.3614 .02 .0112 |
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AlZ .29829 .26178 -.3812 .82 .0077 |
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MgZ .29829 .26178 -.3812 .18 .0077 |
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SiT .19184 .18997 .0060 .97 .0057 |
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BT .19184 .18997 .0060 .03 .0057 |
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B .11005 .22010 .4618 .0091 |
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OH1 0 0 -.2196 .93 .0162 |
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F1 0 0 -.2196 .07 .0162 |
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O2 .06101 .12202 .4917 .0141 |
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O3 .2654 .1327 -.4816 .0140 |
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O4 .09298 .18596 .0755 .0124 |
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O5 .1840 .0920 .0966 .0126 |
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O6 .19632 .18627 -.2160 .0108 |
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O7 .28478 .28470 .0860 .0105 |
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O8 .20952 .27031 .4477 .0119 |
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H3 .266 .133 .389 .02 |
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