Spinel
Nestola F, Boffa Ballaran T, Balic-Zunic T, Princivalle F, Secco L, Dal Negro A
American Mineralogist 92 (2007) 1838-1843
Comparative compressibility and structural behavior of spinel MgAl2O4 at high
pressures: the independency on the degree of cation order
Locality: Sri Lanka
Sample: P = 0.44 GPa, ordered
_database_code_amcsd 0004466
8.0864 8.0864 8.0864 90 90 90 *Fd3m
.125 .125 .125
atom     x     y     z  occ  Uiso
MgA   .125  .125  .125  .85 .0070
AlA   .125  .125  .125  .15 .0070
AlB     .5    .5    .5 .925 .0068
MgB     .5    .5    .5 .075 .0068
O    .2637 .2637 .2637      .0100