Golovastikov N I
Soviet Physics Crystallography 18 (1974) 596-599
Crystal structure of the alkali titanosilicate labuntsovite
Sample: half-cell
14.18 7.74 13.70 90 90 117. B2/m
atom x y z occ Biso
Na .0889 .4907 .2355 .3425 2.084
K1 .0892 .8464 0 .5 1.712
OHK1 .0892 .8464 0 .5 1.712
K2 .0807 .8025 .5 .6525 2.328
Ti1 0 0 0 .75 .935
Ti2 0 0 .2291 .95 1.065
Ti3 .25 0 .25 .98 1.025
Si1 .1806 .2506 .3889 .889
Si2 .2077 .3028 .1105 .787
O1 .0979 .8879 .2262 1.584
O2 .0815 .1718 .1188 .874
O3 .0819 .1957 .3212 1.179
O4 .2365 .1127 .3739 1.804
O5 .2331 .5246 .1287 1.516
O6 .2271 .763 .3182 .997
O7 .2456 .2836 0 1.1
O8 .1373 .2287 .5 1.149
Wat1 .0182 .5092 .1161 .4175 2.448
Wat2 .0231 .5061 .3444 .4388 2.572
Soviet Physics Crystallography 18 (1973) 950-955
Sample: double cell
14.18 15.48 13.7 90 90 117 B2/m
Ti1 0 0 0 .5 .935
Nb1 0 0 0 .5 .935
Ti2' 0 .5 .2291 .95 1.065
Ti3' .25 .5 .25 .98 1.025
Si1 .1806 .1253 .3889 .889
Si1' .1806 .6253 .3889 .889
Si2 .2077 .1514 .1105 .787
Si2' .2077 .6514 .1105 .787
K1 .0892 .4232 0 1.712
K2 .0807 .4013 .5 .6525 2.328
K2' .0807 .9013 .5 .6525 2.328
Na .0889 .7453 .2355 .684 2.084
O1 .0979 .4440 .2262 1.584
O1' .0979 .9440 .2262 1.584
O2 .0815 .0859 .1188 .874
O2' .0815 .5859 .1188 .874
O3 .0819 .0979 .3212 1.179
O3' .0819 .5979 .3212 1.179
O4 .2365 .0564 .3739 1.804
O4' .2365 .5564 .3739 1.804
O5 .2331 .2623 .1287 1.516
O5' .2331 .7623 .1287 1.516
O6 .2271 .3815 .3182 .997
O6' .2271 .8815 .3182 .997
O7 .2456 .1418 0 1.1
O7' .2456 .6418 0 1.1
O8 .1373 .1144 .5 1.149
O8' .1373 .6144 .5 1.149
OH .0892 .9232 0 1.712
Wat1 .0182 .2546 .1161 .834 2.448
Wat2 .0231 .2530 .3444 .875 2.572
Rastsvetaeva R K, Chukanov N V, Pekov I V, Shlyukova Z V, Khomyakov A P
Crystallography Reports 43 (1998) 820-827
Structures of two potassium-rich labuntsovites in relation to the crystal chemistry
of minerals of the labuntsovite-nenadkevichite family
Sample: I
14.42 13.91 7.8 90 116.9 90 C2/m
NaAI .4084 .2640 .0051 .5 4.6
KAII .4175 0 .7010 .9 5.6
TiMI1 .25 .25 .5 .8 2.07
NbMI1 .25 .25 .5 .2 2.07
TiMI2 0 .2257 .5 .8 1.91
NbMI2 0 .2257 .5 .2 1.91
MnMII 0 0 .5 .2 2.1
Si1 .3213 .1106 .2503 1.19
Si2 .2074 .1096 .8011 1.16
O1 .0834 .1220 .6799 1.7
O2 .2735 .1805 .7365 1.5
O3 .2648 .1279 .3837 1.6
O4 .3643 0 .2775 1.7
O5 .2404 0 .7757 1.7
O6 .4214 .1782 .3052 1.8
O7 .2371 .1262 .0262 1.9
OH .0999 .2252 .3958 1.7
KAIII .0862 0 .3396 .8 3.3
WatAIII .0862 0 .3396 .2 3.3
Ow1 .5 .1445 0 9.5
Ow2 0 .1239 0 9.6
H1 .481 .118 .89 1
H2 .049 .133 .10 5
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