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 = 648 K _database_code_amcsd 0002788 11.645 11.645 11.645 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 .0351 .0473 .6524 .0071 .0108 .0078 .0007 -.0015 -.0001 Mn 0 .25 1/8 .0159 .0159 .0078 .0032 0 0 Al 0 0 0 .0068 .0068 .0068 .0001 .0001 .0001 Si 3/8 0 .25 .0059 .0058 .0058 0 0 0