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 = 1173 K _database_code_amcsd 0001408 8.14616 8.14616 8.14616 90 90 90 *Fd3m .125 .125 .125 atom x y z occ Biso Mg .125 .125 .125 .67 1.19 Al .125 .125 .125 .33 1.19 Al .5 .5 .5 .84 1.47 Mg .5 .5 .5 .16 1.47 O .26141 .26141 .26141 1.28