Altisite
Ferraris G, Ivaldi G, Khomyakov A P
European Journal of Mineralogy 7 (1995) 537-546
Altisite Na3K6Ti2[Al2Si8O26]Cl3 a new hyperalkaline
aluminosilicate from Kola Peninsula (Russia) related to
lemoynite: crystal structure and thermal evolution
Sample: RT', T = 20 C, after heating
Locality: Kola Peninsula, Russia
_database_code_amcsd 0006596
10.337 16.257 9.099 90 105.49 90 C2/m
atom      x      y      z  occ  Uiso
K1   .20868 .14134 .10698  .95 .0206
Na1  .20868 .14134 .10698  .05 .0206
K2    .1006 -.0090  .3605 .425  .034
Na2   .1006 -.0090  .3605 .075  .034
Na1       0 .38382    1/2      .0132
Na2       0    1/2      0      .0292
Ti      1/4    1/4    1/2      .0039
Si1  .72500 .09780 .26499      .0056
Si2  .94867 .21186 .27612      .0063
Al        0 .31469      0      .0071
O1    .8764 .12060  .2555      .0108
O2    .6896  .1447  .4040      .0110
O3    .6221  .1180  .1023      .0128
O4    .7276      0  .2974      .0118
O5    .8693 .26881  .3692      .0090
O6    .9258  .2515  .1077      .0138
O7    .1055  .1939  .3517      .0127
Cl1       0      0      0      .0305
Cl2  .12081    1/2  .7278      .0230