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: T76
Locality: East Africa
_database_code_amcsd 0005440
15.938 15.938 7.179 90 90 120 R3m
atom      x      y      z  occ  Uiso
CaX       0      0  .8408 .595 .0150
NaX       0      0  .8408 .362 .0150
MgY  .06302 .93698  .4376 .923 .0063
TiY  .06302 .93698  .4376 .007 .0063
VY   .06302 .93698  .4376 .037 .0063
LiY  .06302 .93698  .4376 .030 .0063
CrY  .06302 .93698  .4376 .003 .0063
AlZ  .26160 .29802  .4544 .928 .0052
MgZ  .26160 .29802  .4544 .072 .0052
Si   .19022 .19201  .0676 .968 .0052
Al   .19022 .19201  .0676 .032 .0052
B     .8902  .1098  .6153      .0075
F1        0      0  .2943 .784 .0049
OH1       0      0  .2943 .216 .0049
O2   .93941 .06059  .5903      .0118
OH3  .13371 .86629  .5566      .0106
O4   .90754 .09246 -.0050      .0103
O5   .09128 .90872 -.0258      .0107
O6    .1864  .1958  .2903      .0083
O7    .2850  .2851 -.0138      .0086
O8    .2703  .2097  .6257      .0094