#------------------------------------------------------------------------------ #$Date: 2010-04-10 21:37:29 +0300 (Sat, 10 Apr 2010) $ #$Revision: 1071 $ #$URL: file:///home/coder/svn-repositories/cod/cif/9/9003346.cif $ #------------------------------------------------------------------------------ # # This file is available in the Crystallography Open Database (COD), # http://www.crystallography.net/. The original data for this entry # were provided the American Mineralogist Crystal Structure Database, # http://rruff.geo.arizona.edu/AMS/amcsd.php # # The file may be used within the scientific community so long as # proper attribution is given to the journal article from which the # data were obtained. # data_9003346 loop_ _publ_author_name 'Redhammer, G. J.' 'Tippelt, G.' 'Roth, G.' 'Amthauer, G.' _publ_section_title ; 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: bht070_1 ; _journal_name_full 'American Mineralogist' _journal_page_first 405 _journal_page_last 420 _journal_volume 89 _journal_year 2004 _chemical_formula_sum 'Al0.663 Ca2 Fe1.337 O5' _chemical_name_mineral Brownmillerite _space_group_IT_number 46 _symmetry_space_group_name_Hall 'I -2b 2' _symmetry_space_group_name_H-M 'I 2 m b' _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_length_a 5.3714 _cell_length_b 14.5805 _cell_length_c 5.5847 _cell_volume 437.381 _exptl_crystal_density_diffrn 3.838 _[local]_cod_data_source_file cifdata.txt _[local]_cod_data_source_block 'global_3434' _[local]_cod_chemical_formula_sum_orig 'Ca2 (Fe1.337 Al.663) O5' _cod_database_code 9003346 loop_ _symmetry_equiv_pos_as_xyz x,y,z 1/2+x,1/2+y,1/2+z x,1/2+y,-z 1/2+x,+y,1/2-z x,1/2-y,z 1/2+x,-y,1/2+z x,-y,-z 1/2+x,1/2-y,1/2-z loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_U_iso_or_equiv Ca 0.49110 0.10830 0.02650 1.00000 0.00660 FeM 0.00060 0.00000 0.00000 0.85100 0.00320 AlM 0.00060 0.00000 0.00000 0.14900 0.00320 FeT 0.95280 0.25000 0.92960 0.48600 0.00160 AlT 0.95280 0.25000 0.92960 0.51400 0.00160 O1 0.25010 0.98600 0.25300 1.00000 0.00640 O2 0.02400 0.14290 0.06970 1.00000 0.00970 O3 0.61060 0.25000 0.86520 1.00000 0.00840