Franklinite Lucchesi S, Russo U, Della Giusta A European Journal of Mineralogy 9 (1997) 31-42 Crystal chemistry and cation distribution in some Mn-rich natural and synthetic spinels Sample: FRK1b _database_code_amcsd 0006641 8.4576 8.4576 8.4576 90 90 90 *Fd3m .125 .125 .125 atom x y z occ Uiso MnT .125 .125 .125 .2988 .0092 FeT .125 .125 .125 .4049 .0092 ZnT .125 .125 .125 .2977 .0092 MgM .5 .5 .5 .0095 .0093 AlM .5 .5 .5 .0283 .0093 FeM .5 .5 .5 .9304 .0093 MnM .5 .5 .5 .0199 .0093 TiM .5 .5 .5 .0125 .0093 O .26139 .26139 .26139 .0100