Spinel
Andreozzi G B, Princivalle F, Skogby H, Della Giusta A
American Mineralogist 85 (2000) 1164-1171
Cation ordering and structural variations with temperature in
MgAl2O4 spinel: An X-ray single crystal study
Sample: quenched from T = 600 C for 45 days
_database_code_amcsd 0002487
8.0856 8.0856 8.0856 90 90 90 *Fd3m
.125 .125 .125
atom      x      y      z   occ  Uiso
Al       .5     .5     .5  .990 .0037
Mg     .125   .125   .125 1.025 .0043
O    .26286 .26286 .26286       .0059