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: bx000_1 Locality: synthetic _database_code_amcsd 0003425 5.4268 14.7631 5.5969 90 90 90 Pnma atom x y z Uiso Ca .4808 .10798 .0227 .0073 FeM 0 0 0 .0049 FeT .9461 .25 .93403 .0046 O1 .2628 .9843 .2370 .0070 O2 .0240 .1406 .0735 .0087 O3 .5991 .25 .8741 .0074