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 = 8.027 GPa, disordered
_database_code_amcsd 0004475
7.9874 7.9874 7.9874 90 90 90 *Fd3m
.125 .125 .125
atom     x     y     z  occ  Uiso
MgA   .125  .125  .125  .73 .0041
AlA   .125  .125  .125  .27 .0041
AlB     .5    .5    .5 .865 .0051
MgB     .5    .5    .5 .135 .0051
O    .2613 .2613 .2613      .0094