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 = 103 K _database_code_amcsd 0002776 11.604 11.604 11.604 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 .04798 .65236 .0037 .0037 .0028 .0002 -.0007 .0002 Mn 0 .25 1/8 .0039 .0039 .0023 .0006 0 0 Al 0 0 0 .0024 .0024 .0024 .0001 .0001 .0001 Si 3/8 0 .25 .0024 .0021 .0021 0 0 0