Magnesiochromite Tabira Y, Withers R L Physics and Chemistry of Minerals 27 (1999) 112-118 Cation ordering in NiAl2O4 spinel by a 111 systematic row CBED technique Sample: picrochromite _database_code_amcsd 0008365 8.3327 8.3327 8.3327 90 90 90 *Fd3m .125 .125 .125 atom x y z occ Biso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) MgT 1/8 1/8 1/8 .96 .46 .0059 .0059 .0059 0 0 0 CrT 1/8 1/8 1/8 .04 .46 .0059 .0059 .0059 0 0 0 CrO .5 .5 .5 .98 .34 .00427 .00427 .00427 -.00020 -.00020 -.00020 MgO .5 .5 .5 .02 .34 .00427 .00427 .00427 -.00020 -.00020 -.00020 OX .26163 .26163 .26163 .39 .0050 .0050 .0050 -.0004 -.0004 -.0004