Amblygonite
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 AF-46: from Karibib, South Africa at T = 200 K
Natural Museum of Natural History, Washington D.C. #105914
_database_code_amcsd 0002968
6.6803 7.7098 6.9549 90.793 117.693 91.285 C-1
atom      x       y      z occ  Uiso
P     .9847  .34071  .2604     .0059
Al1       0       0      0     .0051
Al2       0       0    1/2     .0041
O1   -.3167  .01607 -.1516     .0074
O2    .2985  .06010  .5821     .0079
O3    .1003 -.22251 -.3866     .0067
O4    .0246  .23318  .0959     .0082
O     .0325  .08554 -.2342 .44 .0078
F     .0325  .08554 -.2342 .54 .0078
H     .2017   .1370  .8444 .44  .019
Li1    .049  -.3214   .250 .38  .013
Li2   .0674  -.3224   .313 .62  .012