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 W, T = 873 K _database_code_amcsd 0001400 8.12501 8.12501 8.12501 90 90 90 *Fd3m .125 .125 .125 atom x y z occ Biso Mg .125 .125 .125 .77 .85 Al .125 .125 .125 .23 .85 Al .5 .5 .5 .89 1.09 Mg .5 .5 .5 .11 1.09 O .26210 .26210 .26210 .98