Spinel Peterson R C, Lager G A, Hitterman R L American Mineralogist 76 (1991) 1455-1458 A time-of-flight neutron powder diffraction study of MgAl2O4 at temperatures up to 1273 K sample UC, T = 1273 K _database_code_amcsd 0001411 8.15090 8.15090 8.15090 90 90 90 *Fd3m .125 .125 .125 atom x y z occ Biso Mg .125 .125 .125 .66 1.13 Al .125 .125 .125 .34 1.13 Al .5 .5 .5 .83 1.56 Mg .5 .5 .5 .17 1.56 O .26144 .26144 .26144 1.41