Spinel Meducin F, Redfern S A T, Le Godec Y, Stone H J, Tucker M G, Dove M T, Marshall W G American Mineralogist 89 (2004) 981-986 Study of cation order-disorder in MgAl2O4 spinel by in situ neutron diffraction up to 1600 K and 3.2 GPa Sample at T = 549 K and P = 0.4 GPa, inversion parameter x = .262 _database_code_amcsd 0003570 8.0727 8.0727 8.0727 90 90 90 *Fd3m .125 .125 .125 atom x y z occ Uiso MgT .125 .125 .125 .738 .0109 AlT .125 .125 .125 .262 .0109 AlOct .5 .5 .5 .869 .0183 MgOct .5 .5 .5 .131 .0183 O .26206 .26206 .26206 .0046