Fluor-uvite
MacDonald D J, Hawthorne F C
The Canadian Mineralogist 33 (1995) 849-858
The crystal chemistry of Si=Al substitution in tourmaline
Sample: T72
Locality: East Africa
_database_code_amcsd 0005436
15.949 15.949 7.188 90 90 120 R3m
atom      x      y      z  occ  Uiso
CaX       0      0  .8408 .813 .0106
NaX       0      0  .8408 .173 .0106
MgY  .06346 .93654  .4401 .973 .0059
TiY  .06346 .93654  .4401 .009 .0059
VY   .06346 .93654  .4401 .009 .0059
LiY  .06346 .93654  .4401 .008 .0059
CrY  .06346 .93654  .4401 .001 .0059
AlZ  .26171 .29802  .4546 .888 .0055
MgZ  .26171 .29802  .4546 .112 .0055
Si   .19044 .19214  .0686 .969 .0054
Al   .19044 .19214  .0686 .031 .0054
B     .8903  .1097  .6167      .0069
F1        0      0  .2945 .967 .0057
OH1       0      0  .2945 .033 .0057
O2   .93938 .06062  .5946      .0103
OH3  .13406 .86594  .5574      .0086
O4   .90807 .09193 -.0040      .0103
O5   .09067 .90933 -.0255      .0092
O6    .1867 .19583  .2905      .0084
O7   .28472 .28525 -.0137      .0091
O8    .2702  .2096  .6254      .0102