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 = 100 K Natural Museum of Natural History, Washington D.C. #105914 _database_code_amcsd 0002967 6.6774 7.7086 6.9513 90.812 117.697 91.294 C-1 atom x y z occ Uiso P .9844 .34098 .2608 .0043 Al1 0 0 0 .0040 Al2 0 0 1/2 .0034 O1 -.3167 .01539 -.1526 .0059 O2 .2981 .06028 .5814 .0065 O3 .1007 -.22271 -.3870 .0054 O4 .0237 .23331 .0957 .0066 O .0331 .08558 -.2341 .44 .0067 F .0331 .08558 -.2341 .54 .0067 H .2028 .1371 .8445 .44 .018 Li1 .050 -.3222 .253 .35 .008 Li2 .0666 -.3227 .313 .67 .011