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 = 75 K
_database_code_amcsd 0002962
6.6871 7.7085 6.9660 90.983 117.76 91.387 C-1
atom      x      y      z occ  Uiso
P     .9845  .3412  .2624     .0047
Al1       0      0      0     .0045
Al2       0      0    1/2     .0038
O1   -.3171  .0148 -.1548     .0061
O2    .2980  .0600  .5792     .0066
O3    .1010 -.2231 -.3880     .0057
O4    .0238  .2338  .0977     .0066
O     .0370  .0865 -.2318 .55 .0072
F     .0370  .0865 -.2318 .45 .0072
H     .2030  .1371  .8453 .55  .019
Li1    .047  -.323   .259 .38  .013
Li2    .069 -.3220   .316 .61  .007