Brownmillerite
Vanpeteghem C B, Angel R J, Zhao J, Ross N L, Redhammer G J, Seifert F
Physics and Chemistry of Minerals 35 (2008) 493-504
The effect of oxygen vacancies and aluminium substitution on the
high-pressure properties of brownmillerite-structured Ca2Fe2-xAlxO5
Locality: synthetic
Note: x = 0.55
Note: P = 1.49 GPa
_database_code_amcsd 0017772
5.361 14.5523 5.5958 90 90 90 I2mb
atom     x      y      z occ Biso
Ca    .491 .10830  .0261      .69
FeM      0      0      0 .87  .57
AlM      0      0      0 .13  .57
FeT   .953   .250  .9300 .58  .56
AlT   .953   .250  .9300 .42  .56
O1    .244  .9862   .256      .72
O2    .026  .1429  .0699      .71
O3    .613   .250   .869       .7