Grossular Lager G A, Rossman G R, Rotella F J, Schultz A J American Mineralogist 72 (1987) 766-768 Neutron-diffraction structure of a low-water grossular at 20K _database_code_amcsd 0001109 11.843 11.843 11.843 90 90 90 Ia-3d atom x y z B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Ca .125 0 .25 .00001 .00020 .00020 0 0 .00001 Al 0 0 0 .00009 .00009 .00009 -.00003 -.00003 -.00003 Si .375 0 .25 .00001 .00005 .00005 0 0 0 O .03817 .04559 .65141 .00027 .00024 .00014 .00002 -.00004 .00004