Srebrodolskite 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: bht025_2 Locality: synthetic _database_code_amcsd 0003428 5.4071 14.6949 5.5941 90 90 90 Pnma atom x y z occ Uiso Ca .4832 .10819 .02402 .0074 FeM 0 0 0 .964 .0050 AlM 0 0 0 .036 .0050 FeT .9472 .25 .9325 .760 .0031 AlT .9472 .25 .9325 .240 .0031 O1 .2604 .9847 .2394 .0062 O2 .0223 .1415 .0719 .0092 O3 .6026 .25 .8711 .0072