Amblygonite Groat L A, Raudsepp M, Hawthorne F C, Ercit T S, Sherriff B L, Hartman J S American Mineralogist 75 (1990) 992-1008 The amblygonite-montebrasite series: Characterization by single-crystal structure refinement, infrared spectroscopy and multinuclear MAS-NMR spectroscopy sample AF-65 _database_code_amcsd 0001326 6.6452 7.733 6.9193 90.35 117.44 91.20 C-1 atom x y z occ Uiso P -.01328 .33910 .25586 .0056 Al1 0 0 0 .0061 Al2 0 0 .5 .0057 O1 -.3152 .0188 -.1425 .0087 O2 .2988 .0606 .5882 .0090 O3 .0995 -.2210 -.3827 .0082 O4 .0285 .2317 .0924 .0097 F .0194 .0828 -.2410 .881 .0102 OH .0194 .0828 -.2410 .119 .0102 Li1 .0376 -.3230 .242 .5 .0197 Li2 .051 -.324 .301 .5 .0197