Spessartine Rodehorst U, Geiger C A, Armbruster T American Mineralogist 87 (2002) 542-549 The crystal structures of grossular and spessartine between 100 and 600 K and the crystal chemistry of grossular-spessartine solid solutions Sample: T = 205 K _database_code_amcsd 0002778 11.610 11.610 11.610 90 90 90 Ia-3d atom x y z U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) O .03492 .04783 .65236 .0038 .0050 .0036 .0002 -.0003 .0000 Mn 0 .25 1/8 .0064 .0064 .0034 .0013 0 0 Al 0 0 0 .0031 .0031 .0031 -.0000 -.0000 -.0000 Si 3/8 0 .25 .0029 .0026 .0026 0 0 0