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: bht005_2 Locality: synthetic _database_code_amcsd 0003426 5.4217 14.7432 5.5960 90 90 90 Pnma atom x y z occ Uiso Ca .48141 .10802 .02331 .0065 FeM 0 0 0 .966 .0033 AlM 0 0 0 .034 .0033 FeT .94628 .25 .93351 .920 .0026 AlT .94628 .25 .93351 .080 .0026 O1 .2622 .98432 .2375 .0062 O2 .0236 .14090 .0723 .0082 O3 .5992 .25 .8736 .0063