#------------------------------------------------------------------------------
#$Date: 2024-04-18 18:56:43 +0300 (Thu, 18 Apr 2024) $
#$Revision: 291269 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/00/07/9000714.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_9000714
loop_
_publ_author_name
'Winter, J. K.'
'Ghose, S.'
_publ_section_title
;
 Thermal expansion and high-temperature crystal chemistry of the Al2SiO5
 polymorphs
 T = 1000 deg C
;
_journal_name_full               'American Mineralogist'
_journal_page_first              573
_journal_page_last               586
_journal_volume                  64
_journal_year                    1979
_chemical_formula_sum            'Al2 O5 Si'
_chemical_name_mineral           Sillimanite
_space_group_IT_number           62
_symmetry_space_group_name_Hall  '-P 2c 2ab'
_symmetry_space_group_name_H-M   'P b n m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   7.503
_cell_length_b                   7.739
_cell_length_c                   5.804
_cell_formula_units_Z            4
_cell_volume                     337.013
_database_code_amcsd             0000727
_diffrn_ambient_temperature      1273.15
_exptl_crystal_density_diffrn    3.194
_cod_original_formula_sum        'Al2 Si O5'
_cod_database_code               9000714
loop_
_space_group_symop_operation_xyz
x,y,z
x,y,1/2-z
-x,-y,1/2+z
1/2+x,1/2-y,1/2+z
1/2-x,1/2+y,1/2-z
1/2-x,1/2+y,z
1/2+x,1/2-y,-z
-x,-y,-z
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
Al1 0.01426 0.01881 0.01536 0.00000 -0.00044 -0.00046
Al2 0.01483 0.01972 0.01638 -0.00088 0.00000 0.00000
Si 0.01255 0.01729 0.01502 -0.00206 0.00000 0.00000
O1 0.01483 0.02518 0.01997 -0.00706 0.00000 0.00000
O2 0.01454 0.02882 0.01741 -0.00618 0.00000 0.00000
O3 0.03679 0.03398 0.04420 -0.02118 0.00000 0.00000
O4 0.02595 0.01881 0.01604 -0.00647 -0.00132 -0.00023
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Al1 0.00000 0.00000 0.00000
Al2 0.14100 0.34630 0.25000
Si 0.15200 0.34130 0.75000
O1 0.35960 0.41060 0.75000
O2 0.35660 0.43630 0.25000
O3 0.47830 0.00060 0.75000
O4 0.12480 0.22490 0.51420
loop_
_cod_related_entry_id
_cod_related_entry_database
_cod_related_entry_code
1 AMCSD 0000727