Bussenite
Zhou H, Rastsvetaeva R K, Khomyakov A P, Ma Z, Shi N
Crystallography Reports 47 (2002) 43-46
Crystal structure of new micalike titanosilicate - bussenite,
Na2Ba2Fe2+[TiSi2O7][CO3]O(OH)(H2O)F
Locality: Khibiny alkaline massif, Kola Peninsula, Russia
_database_code_amcsd 0012376
5.399 7.016 16.254 102.44 93.18 90.10 P-1
atom     x     y     z  occ Biso
Na1   .733  .243 .9527   .5  3.1
Na2   .251  .289 .0461   .5  2.4
K1   .2234 .4246 .8493   .2 1.80
Ba1  .2234 .4246 .8493   .8 1.80
Ba2  .2933 .1222 .2449  .47 1.56
NaM1 .0073 .2513 .5030   .5  .65
MnM1 .0073 .2513 .5030 .275  .65
FeM1 .0073 .2513 .5030 .225  .65
FeM2    .5     0    .5   .5  .75
NaM2    .5     0    .5   .4  .75
MnM2    .5     0    .5   .1  .75
NaM3    .5    .5    .5   .5  .53
FeM3    .5    .5    .5   .4  .53
MnM3    .5    .5    .5   .1  .53
SrM4 .2789 .0938 .1870  .32 2.50
CaM4 .2789 .0938 .1870  .21 2.50
Ti   .6951 .3449 .6897  .95  .87
Nb   .6951 .3449 .6897  .05  .87
Si1  .1911 .0583 .6684       .76
Si2  .8083 .3887 .3315       .81
C     .758  .052  .106       4.6
O1    .957  .165 .7119       1.0
O2    .045  .451 .2870       1.4
O3    .555  .450 .2863       1.4
O4    .449  .162 .7134       1.7
O5    .800  .150 .3044       2.0
O6    .180  .032 .5690       2.2
O7    .822  .460 .4302       2.5
O8    .677  .292 .5809       1.7
O9    .154  .097  .902       9.6
O10   .889  .213  .106       7.9
O11   .555  .138  .095       9.4
OH    .338  .215 .4314       1.8
Wat   .719  .417 .8360       2.7
F1      .5    .5     0       3.7
F2       0    .5     0       5.7