Information card for entry 9003344

Structure parameters

• Mineral name: Brownmillerite
• Formula: Al0.552 Ca2 Fe1.448 O5
• Calculated formula: Al0.552 Ca2 Fe1.448 O5
• Title of publication: 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: bht55_1
• Authors of publication: Redhammer, G. J.; Tippelt, G.; Roth, G.; Amthauer, G.
• Journal of publication: American Mineralogist
• Year of publication: 2004
• Journal volume: 89
• Pages of publication: 405 - 420
• a: 5.3808 Å
• b: 14.6131 Å
• c: 5.5911 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 439.629 ų
• Number of distinct elements: 4
• Space group number: 46
• Hermann-Mauguin space group symbol: I 2 m b
• Hall space group symbol: I -2b 2
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No