Periclase
Boiocchi M, Caucia F, Merli M, Prella D, Ungaretti L
European Journal of Mineralogy 13 (2001) 871-881
Crystal-chemical reasons for the immiscibility of periclase and wustite
under lithospheric P,T conditions
Sample: after heating to 1100 deg C
_database_code_amcsd 0006904
4.212 4.212 4.212 90 90 90 Fm-3m
atom   x   y   z occ Biso
Mg     0   0   0 .99  .35
Fe     0   0   0 .01  .35
O     .5  .5  .5      .36