Brownmillerite
Redhammer G J, Tippelt G, Roth G, Amthauer G
American Mineralogist 89 (2004) 405-420
Structural variations in the brownmillerite series Ca2(Fe2-xAlx)O5:
Single-crystal X-ray diffraction at 25 deg C and high temperature
X-ray powder diffraction (25 C <= T <= 1000 C)
Sample: bht110n1
Locality: synthetic
_database_code_amcsd 0003439
5.3369 14.4945 5.5548 90 90 90 I2mb
atom     x      y      z  occ  Uiso
Ca   .4914 .10852 .02709      .0064
FeM  .0004      0      0 .733 .0036
AlM  .0004      0      0 .267 .0036
FeT  .9526    .25  .9278 .281 .0025
AlT  .9526    .25  .9278 .719 .0025
O1   .2486  .9864  .2519      .0061
O2   .0203  .1440  .0674      .0095
O3   .6172    .25  .8608      .0063