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 = 273 K _database_code_amcsd 0002780 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 .03511 .04774 .65228 .0052 .0061 .0039 .0006 -.0007 .0000 Mn 0 .25 1/8 .0080 .0080 .0041 .0016 0 0 Al 0 0 0 .0037 .0037 .0037 .0001 .0001 .0001 Si 3/8 0 .25 .0036 .0031 .0031 0 0 0