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Nenadkevichite |
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Rastsvetaeva R K, Tamazyan R A, Pushcharovsky D Y, Nadezhina T N |
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European Journal of Mineralogy 6 (1994) 503-509 |
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Crystal structure and microtwinning of K-rich nenadkevichite |
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Note: Wat4 y-coordinate changed to reproduce reported bond lengths |
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_database_code_amcsd 0006548 |
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14.692 14.164 7.859 90 117.87 90 Cm |
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atom x y z occ Biso |
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K1 .5001 .8194 .983 .76 3.4 |
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K2 .432 0 .705 .53 6.8 |
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K3 .910 0 .648 .44 3.0 |
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K4 .081 0 .288 .49 3.7 |
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Na1 .009 0 .468 .58 1.9 |
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Na2 .796 0 .529 .39 8.8 |
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Na3 .006 0 .109 .25 13.9 |
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NbM1 0 .7691 .5 .6 .32 |
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TiM1 0 .7691 .5 .4 .32 |
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NbM2 .7434 .7480 .4644 .5 .53 |
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TiM2 .7434 .7480 .4644 .5 .53 |
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Si1 .2170 .8920 .7800 1.5 |
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Si2 .6918 .8916 .736 2.0 |
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Si3 .8055 .8901 .186 .9 |
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Si4 .3287 .8914 .230 1.0 |
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O1 .911 .766 .586 3.2 |
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O2 .925 .873 .308 1.8 |
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O3 .268 .867 .341 1.7 |
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O4 .274 .823 .702 3.3 |
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O5 .429 .8256 .285 1.4 |
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O6 .375 0 .280 2.9 |
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O7 .2512 .879 .003 2.0 |
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O8 .227 0 .730 1.8 |
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O9 .104 .7682 .372 .6 |
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O10 .092 .870 .665 2.3 |
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O11 .747 .8652 .601 2.1 |
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O12 .732 .8244 .245 .9 |
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O13 .591 .826 .672 2.3 |
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O14 .656 0 .711 1.5 |
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O15 .771 .872 .956 2.9 |
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O16 .777 0 .204 1.7 |
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Wat1 .030 .880 .982 .56 2.7 |
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Wat2 .564 0 .212 .61 4.2 |
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Wat3 .299 0 .513 .32 2.6 |
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Wat4 .036 .827 .025 .37 12.5 |
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Wat5 .514 0 .891 .36 6.1 |
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