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 = 398 K _database_code_amcsd 0002783 11.622 11.622 11.622 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 .6524 .0053 .0077 .0053 .0002 -.0006 -.0011 Mn 0 .25 1/8 .0104 .0104 .0053 .0022 0 0 Al 0 0 0 .0046 .0046 .0046 .0000 .0000 .0000 Si 3/8 0 .25 .0045 .0038 .0038 0 0 0