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 = 261 K _database_code_amcsd 0002779 11.615 11.615 11.615 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 .03489 .04775 .65226 .0051 .0061 .0037 .0005 -.0008 .0004 Mn 0 .25 1/8 .0077 .0077 .0038 .0014 0 0 Al 0 0 0 .0036 .0036 .0036 -.0000 -.0000 -.0000 Si 3/8 0 .25 .0036 .0032 .0032 0 0 0