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 Dunton Gem Min, Oxford County, Maine at T = 75 K
_database_code_amcsd 0002957
6.7129 7.7095 7.0231 91.359 117.960 91.781 C-1
atom      x      y      z occ  Uiso
P     .9834  .3420  .2675     .0031
Al1       0      0      0     .0033
Al2       0      0    1/2     .0029
O1   -.3180  .0147 -.1610     .0045
O2    .2979  .0589  .5727     .0047
O3    .1024 -.2237 -.3900     .0042
O4    .0256  .2358  .1040     .0049
O     .0490  .0896 -.2254 .95 .0044
F     .0490  .0896 -.2254 .05 .0044
H     .2063  .1336  .8480 .95  .017
Li1    .061  -.322   .309 .45  .000
Li2    .083  -.321   .322 .55  .018