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