Mullite-Ge Saalfeld H, Gerlach H Zeitschrift fur Kristallographie 195 (1991) 65-73 Solid solution and optical properties of (Al,Ge)-mullites Locality: synthetic _database_code_amcsd 0011005 7.644 7.760 2.923 90 90 90 Pbam atom x y z occ Biso Al1 0 0 0 .53 Al2 .3499 .1606 .5 .5 .48 Ge2 .3499 .1606 .5 .3086 .48 Al3 .2308 .2966 .5 .1914 .88 O1 .3708 .2875 0 1.06 O2 .1369 .0799 .5 .98 O3 0 .5 .5 .4260 1.03 O4 .0437 .4547 .5 .1914 1.02