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