#------------------------------------------------------------------------------
#$Date: 2009-11-20 13:07:27 +0200 (Fri, 20 Nov 2009) $
#$Revision: 893 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/9000715.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_9000715
loop_
_publ_author_name
'Winter J K'
'Ghose S'
_publ_section_title
;
 Thermal expansion and high-temperature crystal chemistry of the Al2SiO5
 polymorphs
 T = 25 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           Andalusite
_symmetry_space_group_name_H-M   'P n n m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   7.7980
_cell_length_b                   7.9031
_cell_length_c                   5.5566
_cell_volume                     342.444
_diffrn_ambient_temperature      298.15
_[local]_cod_chemical_formula_sum_orig 'Al2 Si O5'
loop_
_symmetry_equiv_pos_as_xyz
x,y,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,1/2+z
1/2+x,1/2-y,1/2-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
Al1 0.00000 0.00000 0.24190
Al2 0.37050 0.13910 0.50000
Si 0.24600 0.25200 0.00000
Oa 0.42460 0.36290 0.00000
Ob 0.10300 0.40030 0.00000
Oc 0.42330 0.36290 0.50000
Od 0.23050 0.13390 0.23940
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 0.00647 0.00918 0.00360 0.00156 0.00000 0.00000
Al2 0.00277 0.00823 0.00438 0.00000 0.00000 0.00000
Si 0.00216 0.00759 0.00391 0.00000 0.00000 0.00000
Oa 0.00339 0.00981 0.00485 -0.00187 0.00000 0.00000
Ob 0.00308 0.00854 0.01345 0.00062 0.00000 0.00000
Oc 0.00555 0.00886 0.00469 -0.00094 0.00000 0.00000
Od 0.00493 0.01013 0.00469 -0.00125 -0.00088 0.00111