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 = 225 K
_database_code_amcsd 0002964
6.6914 7.7150 6.9697 90.939 117.76 91.377 C-1
atom      x      y      z occ  Uiso
P     .9847  .3411  .2616     .0056
Al1       0      0      0     .0059
Al2       0      0    1/2     .0047
O1   -.3168  .0159 -.1534     .0078
O2    .2984  .0600  .5802     .0084
O3    .1004 -.2229 -.3873     .0073
O4    .0251  .2338  .0979     .0086
O     .0361  .0866 -.2321 .55 .0084
F     .0361  .0866 -.2321 .45 .0084
H     .2015  .1370  .8444 .55  .020
Li1    .052  -.322   .252 .38  .015
Li2   .0684 -.3224   .316 .62  .009