AM_Brownmillerite_15 Formula: Ca2 (Fe.922 Al1.078) O5 Name: Brownmillerite Unit cell: 5.3269 14.4687 5.5433 90.0 90.0 90.0 , V=427.24 Space group: I2MB (46)

Redhammer G J , Tippelt G , Roth G , Amthauer G , American Mineralogist , 89 (2004) p.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: bht120n2