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: bht130_2
Locality: synthetic
_database_code_amcsd 0003441
5.3093 14.4534 5.5230 90 90 90 I2mb
atom      x      y      z  occ  Uiso
Ca    .4917 .10850 .02695      .0074
FeM  -.0003      0      0 .594 .0049
AlM  -.0003      0      0 .406 .0049
FeT   .9527    .25  .9270 .147 .0031
AlT   .9527    .25  .9270 .853 .0031
O1    .2485  .9871  .2536      .0073
O2    .0196  .1438  .0662      .0110
O3    .6184    .25  .8586      .0070