#------------------------------------------------------------------------------ #$Date: 2013-05-05 17:21:46 +0300 (Sun, 05 May 2013) $ #$Revision: 85285 $ #$URL: file:///home/coder/svn-repositories/cod/cif/9/00/33/9003341.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_9003341 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: bht035_1 ; _journal_name_full 'American Mineralogist' _journal_page_first 405 _journal_page_last 420 _journal_volume 89 _journal_year 2004 _chemical_formula_sum 'Al0.408 Ca2 Fe1.592 O5' _chemical_name_mineral Brownmillerite _space_group_IT_number 62 _symmetry_space_group_name_Hall '-P 2ac 2n' _symmetry_space_group_name_H-M 'P n m a' _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_length_a 5.3986 _cell_length_b 14.6631 _cell_length_c 5.5910 _cell_volume 442.585 _exptl_crystal_density_diffrn 3.903 _[local]_cod_chemical_formula_sum_orig 'Ca2 (Fe1.592 Al.408) O5' _cod_database_code 9003341 loop_ _symmetry_equiv_pos_as_xyz x,y,z x,1/2-y,z -x,1/2+y,-z 1/2-x,1/2+y,1/2+z 1/2+x,1/2-y,1/2-z 1/2+x,y,1/2-z 1/2-x,-y,1/2+z -x,-y,-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 0.48454 0.10834 0.02498 1.00000 0.00790 FeM 0.00000 0.00000 0.00000 0.90600 0.00480 AlM 0.00000 0.00000 0.00000 0.09400 0.00480 FeT 0.94803 0.25000 0.93142 0.68600 0.00410 AlT 0.94803 0.25000 0.93142 0.31400 0.00410 O1 0.25890 0.98498 0.24120 1.00000 0.00770 O2 0.02200 0.14226 0.07130 1.00000 0.01010 O3 0.60450 0.25000 0.86870 1.00000 0.00880