Jacobsite 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: JBS1 _database_code_amcsd 0006638 8.4075 8.4075 8.4075 90 90 90 *Fd3m .125 .125 .125 atom x y z occ Uiso MgT .125 .125 .125 .0550 .0057 MnT .125 .125 .125 .2386 .0057 FeT .125 .125 .125 .6890 .0057 ZnT .125 .125 .125 .0173 .0057 MgM .5 .5 .5 .3407 .0058 AlM .5 .5 .5 .0244 .0058 FeM .5 .5 .5 .6112 .0058 MnM .5 .5 .5 .0228 .0058 O .25764 .25764 .25764 .0089