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: T77
Locality: East Africa
_database_code_amcsd 0005441
15.959 15.959 7.175 90 90 120 R3m
atom      x      y      z  occ  Uiso
CaX       0      0  .8408 .716 .0136
NaX       0      0  .8408 .255 .0136
MgY  .06313 .93687  .4366 .896 .0060
TiY  .06313 .93687  .4366 .011 .0060
VY   .06313 .93687  .4366 .067 .0060
LiY  .06313 .93687  .4366 .019 .0060
CrY  .06313 .93687  .4366 .007 .0060
AlZ  .26166 .29801  .4529 .917 .0054
MgZ  .26166 .29801  .4529 .083 .0054
Si   .19040 .19216  .0657 .931 .0057
Al   .19040 .19216  .0657 .069 .0057
B     .8902  .1098  .6144      .0069
F1        0      0  .2919 .915 .0104
OH1       0      0  .2919 .085 .0104
O2   .93938 .06062  .5914      .0099
OH3  .13382 .86672  .5559      .0094
O4   .90777 .09223 -.0066      .0113
O5   .09101 .90899 -.0279      .0111
O6    .1868  .1961  .2892      .0084
O7    .2854  .2857 -.0154      .0088
O8    .2702  .2094  .6238      .0091