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: bht100_2
Locality: synthetic
_database_code_amcsd 0003438
5.3469 14.5149 5.5640 90 90 90 I2mb
atom      x      y      z  occ  Uiso
Ca   .49141 .10855 .02702      .0069
FeM   .0006      0      0 .758 .0044
AlM   .0006      0      0 .242 .0044
FeT   .9524    .25  .9283 .333 .0036
AlT   .9524    .25  .9283 .667 .0036
O1    .2484  .9865  .2528      .0068
O2    .0215  .1435  .0686      .0093
O3    .6151    .25  .8620      .0077