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 = 150 K
_database_code_amcsd 0002963
6.6891 7.7111 6.9648 90.958 117.76 91.382 C-1
atom      x       y      z occ  Uiso
P     .9846   .3411  .2620     .0048
Al1       0       0      0     .0049
Al2       0       0    1/2     .0038
O1   -.3170   .0153 -.1541     .0067
O2    .2984   .0600  .5798     .0075
O3    .1008  -.2231 -.3877     .0062
O4    .0244   .2339  .0977     .0075
O     .0366   .0865 -.2320 .58 .0076
F     .0366   .0865 -.2320 .42 .0076
H     .2025   .1370  .8442 .58  .019
Li1    .051  -.3221   .256 .36  .014
Li2   .0689  -.3220   .316 .64  .009