Chromium-dravite
Bosi F, Lucchesi S, Reznitskii L
European Journal of Mineralogy 16 (2004) 345-352
Crystal chemistry of the dravite-chromdravite series
Note: Tourmaline TM1p43e
Locality: Sludyanka crystalline complex, Lake Baikal, Russia
_database_code_amcsd 0007061
15.9911 15.9911 7.2764 90 90 120 R3m
atom       x       y      z  occ  Uiso
NaX        0       0  .2245 .888 .0180
CaX        0       0  .2245 .028 .0180
KX         0       0  .2245 .022 .0180
CrY   .12349 .061745 .63680 .726 .0045
MgY   .12349 .061745 .63680 .217 .0045
AlY   .12349 .061745 .63680 .032 .0045
V3+Y  .12349 .061745 .63680 .019 .0045
ZnY   .12349 .061745 .63680 .005 .0045
Ti4+Y .12349 .061745 .63680 .001 .0045
AlZ   .29794  .26194 .60929 .541 .0054
MgZ   .29794  .26194 .60929 .253 .0054
CrZ   .29794  .26194 .60929 .162 .0054
V3+Z  .29794  .26194 .60929 .037 .0054
Fe2+Z .29794  .26194 .60929 .006 .0054
SiT   .19050  .18872      0 .998 .0044
AlT   .19050  .18872      0 .002 .0044
B     .11011  .22022  .4541      .0047
O1W        0       0  .7653 .707 .0064
F1W        0       0  .7653 .259 .0064
OH1W       0       0  .7653 .034 .0064
O2    .06044  .12088  .4883      .0067
O3V    .2577  .12885  .5099      .0100
O4    .09270  .18540  .0716      .0098
O5     .1832   .0916  .0916      .0087
O6    .19234  .18293  .7791      .0070
O7    .28368  .28345  .0744      .0089
O8    .20809  .26881  .4384      .0101
H3V     .252    .126    .38        .15