Spinel Princivalle F, Martignago F, Dal Negro A American Mineralogist 91 (2006) 313-318 Kinetics of cation ordering in natural Mg(Al,Cr3+)2O4 spinels Locality: Olkhon metamorphic complex, Lake Baikal, Russia Sample: Sc, untreated _database_code_amcsd 0004086 8.1180 8.1180 8.1180 90 90 90 *Fd3m .125 .125 .125 atom x y z occ MgT .125 .125 .125 .887 AlT .125 .125 .125 .113 AlM .5 .5 .5 .765 MgM .5 .5 .5 .113 Cr3+M .5 .5 .5 .122 O .26326 .26326 .26326