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 = 1273 K _database_code_amcsd 0001410 8.15409 8.15409 8.15409 90 90 90 *Fd3m .125 .125 .125 atom x y z occ Biso Mg .125 .125 .125 .64 1.25 Al .125 .125 .125 .36 1.25 Al .5 .5 .5 .82 1.60 Mg .5 .5 .5 .18 1.60 O .26114 .26114 .26114 1.41