Saamite
Camara F, Sokolova E, Abdu Y A, Hawthorne F C
The Canadian Mineralogist 52 (2014) 745-761
Saamite, Ba[]TiNbNa3Ti(Si2O7)2O2(OH)2(H2O)2, a group-III Ti-disilicate mineral from the
Khibiny alkaline massif, Kola Peninsula, Russia: description and crystal structure
Locality: Kirovskii mine, Khibiny alkaline massif, Kola Peninsula, Russia
_database_code_amcsd 0020471
5.437 7.141 21.69 92.97 96.07 90.01 P-1
atom      x      y      z occ  Uiso
Ba1   .7617 .75515 .03112 .61 .0090
Sr1   .7617 .75515 .03112 .20 .0090
K1    .7617 .75515 .03112 .13 .0090
Na1   .4967  .2873  .2303 .81  .022
Na2  -.0011  .0298  .2302 .72 .0208
Mn2  -.0011  .0298  .2302 .26 .0208
Fe1  -.0011  .0298  .2302 .02 .0208
Na3  -.0017  .5431  .2303 .69 .0211
Mn3  -.0017  .5431  .2303 .29 .0211
Fe2  -.0017  .5431  .2303 .02 .0211
Nb1   .1981  .3080  .3700 .55 .0141
Ti1   .1981  .3080  .3700 .45 .0141
Ti2   .7906  .2659 .09441 .87 .0079
Nb2   .7906  .2659 .09441 .12 .0079
Al1   .7906  .2659 .09441 .01 .0079
Ti3   .5074  .7857 .22492 .77 .0204
Mn1   .5074  .7857 .22492 .13 .0204
Nb3   .5074  .7857 .22492 .09 .0204
Mg1   .5074  .7857 .22492 .01 .0204
Ca1    .209   .819  .3906 .26  .021
Si1   .6908  .0189  .3555     .0190
Si2   .6913  .5935  .3555     .0192
Si3   .2937  .9828 .10040     .0077
Si4   .2931  .5519 .10030     .0085
O1     .660 -.0024  .2805      .016
O2     .458   .119  .3843      .035
O3     .707  .8080  .3852      .030
O4     .953   .120  .3824      .037
O5     .659  .5913  .2810      .017
O6     .459   .500  .3831      .041
O7     .953   .503  .3812      .040
O8     .322  .9835  .1745      .014
O9    .5277  .0732  .0715      .011
O10   .0359  .0737  .0717      .011
O11    .279  .7623  .0705      .012
O12    .324  .5718  .1747      .016
O13   .0350  .4513  .0717      .010
O14   .5248  .4457  .0717      .010
O15    .167   .291  .2871      .031
O16    .829  .2789  .1730      .018
OH17   .762  .7783  .1754 .63  .021
F1     .762  .7783  .1754 .37  .021
OH18   .215   .790  .2783 .63  .025
F2     .215   .790  .2783 .37  .025
Wat19  .238   .330  .4792      .056
Wat20  .249   .742  .4956 .75  .053
Wat21   .25    .86   .432 .25   .05