Srebrodolskite Bertaut E, Blum P, Sagnieres A Acta Crystallographica 12 (1959) 149-159 Structure du Ferrite Bicalcique et de la Brownmillerite _cod_database_code 1008124 _database_code_amcsd 0016066 5.58 14.5 5.34 90 90 90 Pcmn atom x y z occ Ca .028 .112 .48 Fe1 0 0 0 .5 Al1 0 0 0 .5 Fe2 -.072 .25 -.055 .5 Al2 -.072 .25 -.055 .5 O1 .25 -.015 .25 O2 .055 .133 0 O3 -.137 .25 .607