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Agrellite |
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Rozhdestvenskaya I V, Nikishova L V |
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Crystallography Reports 43 (1998) 589-597 |
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Crystal structure of Na(Ca,Sr)2Si4O10F strontium agrellite from |
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Yakutian charoitites: agrellite polytypes |
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Locality: Sirenevyi Kamen deposit, Murunskii massif, Yakutia, Russia |
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_database_code_amcsd 0019049 |
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7.788 18.941 6.995 90.17 116.78 94.16 P-1 |
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atom x y z occ Biso |
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Ca1A .0068 .2188 .0023 .70 1.6 |
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Sr1A .0068 .2188 .0023 .30 1.6 |
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Ca1B .5392 .2842 .0231 .86 .8 |
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Na1B .5392 .2842 .0231 .14 .8 |
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Ca2A .4491 .7203 .4754 .90 .86 |
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Na2A .4491 .7203 .4754 .10 .86 |
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Ca2B .9988 .7847 .4942 2.0 |
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Si1A .208 .9287 .375 2.2 |
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Si1B .3073 .5660 .1560 .9 |
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Si2A .486 .8753 .215 1.7 |
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Si2B .0233 .6181 .2932 .6 |
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Si3A .8342 .9107 .6671 1.0 |
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Si3B .6755 .5921 .834 1.6 |
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Si4A .4866 .8793 .7673 1.5 |
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Si4B .0255 .6209 .7285 1.5 |
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NaA .235 .0082 .868 1.03 2.6 |
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NaB .261 .5035 .628 .86 2.7 |
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FA .756 .7607 .131 4.0 |
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FB .214 .2438 .375 1.1 |
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O1A .359 .9384 .619 .7 |
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O1B .181 .5693 .902 2.4 |
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O2A .097 .0072 .293 .5 |
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O2B .403 .4960 .199 2.2 |
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O3A .348 .9354 .228 3.1 |
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O3B .162 .5647 .266 .8 |
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O4A .062 .865 .277 .9 |
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O4B .455 .6366 .225 1.9 |
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O5A .386 .7961 .189 .9 |
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O5B .100 .6954 .314 .7 |
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O6A .510 .906 .009 3.1 |
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O6B .000 .5888 .500 1.1 |
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O7A .698 .8925 .412 1.4 |
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O7B .821 .6018 .107 1.9 |
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O8A .021 .8722 .761 2.0 |
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O8B .496 .6376 .748 1.0 |
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O9A .703 .8930 .793 .7 |
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O9B .814 .596 .713 5.7 |
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O10A .406 .8020 .698 1.6 |
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O1OB .114 .7016 .785 .43 |
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