Montebrasite
Groat L A, Chakoumakos B C, Brouwer D H, Hoffman C M, Fyfe C A, Morell H, Schultz A J
American Mineralogist 88 (2003) 195-210
The amblygonite (LiAlPO4F) - montebrasite (LiAlPO4OH) solid solution:
A combined powder and single-crystal neutron diffraction and solid-state Li MAS, CP MAS,
and REDOR NMR study
Sample: from Tanco Pegmatite, Bernic Lake, Manitoba at T = 15 K
_database_code_amcsd 0002961
6.6861 7.7004 6.9610 91.013 117.787 91.383 C-1
atom      x      y      z occ  Uiso
P     .9846  .3412  .2625     .0046
Al1       0      0      0     .0046
Al2       0      0    1/2     .0036
O1   -.3172  .0150 -.1547     .0060
O2    .2982  .0602  .5794     .0065
O3    .1013 -.2231 -.3879     .0054
O4    .0236  .2337  .0976     .0065
O     .0372  .0865 -.2318 .55 .0071
F     .0372  .0865 -.2318 .45 .0071
H     .2018  .1370  .8444 .55  .019
Li1    .050  -.323   .259 .38  .012
Li2    .068 -.3215   .315 .62  .007