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#$Date: 2013-05-05 17:21:46 +0300 (Sun, 05 May 2013) $
#$Revision: 85285 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/00/24/9002407.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_9002407
loop_
_publ_author_name
'Fischer, R. X.'
'Schneider, H.'
_publ_section_title
;
 Crystal structure of Cr-mullite
 Sample: fixed slit, monochromatic
;
_journal_name_full               'American Mineralogist'
_journal_page_first              1175
_journal_page_last               1179
_journal_volume                  85
_journal_year                    2000
_chemical_formula_sum            'Al1.97 Cr0.25 O5.22 Si0.78'
_chemical_name_mineral           Mullite
_space_group_IT_number           55
_symmetry_space_group_name_Hall  '-P 2 2ab'
_symmetry_space_group_name_H-M   'P b a m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   7.56712
_cell_length_b                   7.70909
_cell_length_c                   2.90211
_cell_volume                     169.296
_exptl_crystal_density_diffrn    3.366
_[local]_cod_chemical_formula_sum_orig 'Al1.97 Cr.25 Si.78 O5.22'
_cod_database_code               9002407
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
1/2+x,1/2-y,z
1/2-x,1/2+y,-z
1/2-x,1/2+y,z
1/2+x,1/2-y,-z
x,y,-z
-x,-y,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
AlM1 0.00000 0.00000 0.00000 0.75000 0.00659
CrM1 0.00000 0.00000 0.00000 0.25000 0.00659
AlT 0.14820 0.34160 0.50000 0.50000 0.00874
SiT 0.14820 0.34160 0.50000 0.39000 0.00874
AlT* 0.25990 0.20020 0.50000 0.11000 0.00127
Oab 0.35650 0.42170 0.50000 1.00000 0.01659
Oc 0.50000 0.00000 0.50000 1.00000 0.02026
Oc* 0.43600 0.04790 0.50000 0.11000 0.00887
Od 0.12750 0.22490 0.00000 1.00000 0.01596