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: bht120n2
Locality: synthetic
_database_code_amcsd 0003440
5.3269 14.4687 5.5433 90 90 90 I2mb
atom     x      y     z  occ  Uiso
Ca   .4914 .10871 .0271      .0073
FeM  .0004      0     0 .684 .0044
AlM  .0004      0     0 .316 .0044
FeT  .9526    .25 .9275 .238 .0030
AlT  .9526    .25 .9275 .762 .0030
O1   .2481  .9868 .2535      .0072
O2   .0200  .1437 .0666      .0101
O3   .6168    .25 .8610      .0082