#------------------------------------------------------------------------------
#$Date: 2008-03-10 10:25:41 +0200 (Mon, 10 Mar 2008) $
#$Revision: 255 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/9003342.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_9003342
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: bht040_2
;
_journal_name_full               'American Mineralogist'
_journal_page_first              405
_journal_page_last               420
_journal_volume                  89
_journal_year                    2004
_chemical_formula_sum            'Ca2 (Fe1.559 Al.441) O5'
_chemical_name_mineral           Brownmillerite
_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                   5.3936
_cell_length_b                   14.6476
_cell_length_c                   5.5899
_cell_volume                     441.621
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 0.48477 0.10835 0.02493 1.00000 0.00770
FeM 0.00000 0.00000 0.00000 0.92000 0.00480
AlM 0.00000 0.00000 0.00000 0.08000 0.00480
FeT 0.94805 0.25000 0.93132 0.63900 0.00380
AlT 0.94805 0.25000 0.93132 0.36100 0.00380
O1 0.25890 0.98509 0.24110 1.00000 0.00780
O2 0.02150 0.14220 0.07130 1.00000 0.01010
O3 0.60520 0.25000 0.86860 1.00000 0.00870