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 = 448 K _database_code_amcsd 0002784 11.624 11.624 11.624 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 .0350 .0478 .6525 .0051 .0077 .0050 .0008 -.0011 -.0003 Mn 0 .25 1/8 .0099 .0099 .0053 .0023 0 0 Al 0 0 0 .0044 .0044 .0044 .0008 .0008 .0008 Si 3/8 0 .25 .0048 .0036 .0036 0 0 0