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: T79
Locality: East Africa
_database_code_amcsd 0005443
15.958 15.958 7.180 90 90 120 R3m
atom      x      y      z  occ  Uiso
CaX       0      0  .8408 .769 .0129
NaX       0      0  .8408 .202 .0129
MgY  .06327 .93673  .4369 .926 .0058
TiY  .06327 .93673  .4369 .012 .0058
VY   .06327 .93673  .4369 .041 .0058
LiY  .06327 .93673  .4369 .018 .0058
CrY  .06327 .93673  .4369 .003 .0058
AlZ  .26165 .29795  .4529 .915 .0052
MgZ  .26165 .29795  .4529 .085 .0052
Si   .19041 .19213  .0660 .938 .0055
Al   .19041 .19213  .0660 .062 .0055
B    .89018 .10982  .6148      .0065
F1        0      0  .2922 .805 .0104
OH1       0      0  .2922 .195 .0104
O2   .93931 .06069  .5920      .0098
OH3  .13397 .86603  .5558      .0086
O4   .90784 .09216 -.0062      .0111
O5   .09094 .90906 -.0279      .0106
O6   .18682 .19610  .2892      .0081
O7   .28511 .28557 -.0156      .0088
O8   .27020 .20947  .6240      .0090