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