#------------------------------------------------------------------------------
#$Date: 2010-01-30 15:59:17 +0200 (Sat, 30 Jan 2010) $
#$Revision: 966 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/9000508.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_9000508
loop_
_publ_author_name
'Griffen D T'
'Ribbe P H'
_publ_section_title
;
 Refinement of the crystal structure of celsian
;
_journal_name_full               'American Mineralogist'
_journal_page_first              414
_journal_page_last               418
_journal_volume                  61
_journal_year                    1976
_chemical_formula_sum            'Al2 Ba O8 Si2'
_[local]_cod_chemical_formula_sum_orig 'Ba (Al2 Si2) O8'
_chemical_name_mineral           Celsian
_symmetry_space_group_name_H-M   'I 1 2/c 1'
_cell_angle_alpha                90
_cell_angle_beta                 115.1
_cell_angle_gamma                90
_cell_length_a                   8.622
_cell_length_b                   13.078
_cell_length_c                   14.411
_cell_volume                     1471.516
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
1/2+x,1/2+y,1/2+z
x,-y,1/2+z
1/2+x,1/2-y,+z
-x,y,1/2-z
1/2-x,1/2+y,-z
-x,-y,-z
1/2-x,1/2-y,1/2-z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Ba1 0.28270 0.00000 0.06530 1.00000
Al1 0.00960 0.18200 0.11030 0.50000
Si1 0.00960 0.18200 0.11030 0.50000
Al2 0.00760 0.18300 0.61480 0.50000
Si2 0.00760 0.18300 0.61480 0.50000
Al3 0.70540 0.12140 0.17300 0.50000
Si3 0.70540 0.12140 0.17300 0.50000
Al4 0.70190 0.11630 0.67430 0.50000
Si4 0.70190 0.11630 0.67430 0.50000
O1 0.00050 0.13770 -0.00020 1.00000
O2 0.62060 -0.00030 0.14380 1.00000
O3 0.83490 0.13680 0.11190 1.00000
O4 0.81980 0.13700 0.61360 1.00000
O5 0.02200 0.30620 0.12100 1.00000
O6 0.02930 0.31200 0.63120 1.00000
O7 0.18360 0.12960 0.19580 1.00000
O8 0.19000 0.12310 0.70170 1.00000
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
Ba1 0.00865 0.01213 0.01639 -0.00052 0.00361 -0.00086
Al1 0.00865 0.00780 0.01035 -0.00052 0.00413 -0.00086
Si1 0.00865 0.00780 0.01035 -0.00052 0.00413 -0.00086
Al2 0.00401 0.00607 0.00690 -0.00207 0.00103 0.00000
Si2 0.00401 0.00607 0.00690 -0.00207 0.00103 0.00000
Al3 0.00679 0.00347 0.00777 0.00155 0.00258 0.00086
Si3 0.00679 0.00347 0.00777 0.00155 0.00258 0.00086
Al4 0.00494 0.00607 0.00863 -0.00052 0.00206 0.00086
Si4 0.00494 0.00607 0.00863 -0.00052 0.00206 0.00086
O1 0.01452 0.00433 0.00690 -0.00259 0.00310 0.00000
O2 0.00957 0.00173 0.01898 0.00414 0.00258 0.00346
O3 0.01977 0.01300 0.02330 -0.00569 0.01136 -0.00173
O4 0.01204 0.00780 0.01380 0.00207 0.00206 -0.00086
O5 0.01699 0.00780 0.01898 -0.00155 0.00619 0.00086
O6 0.00741 0.01646 0.01898 -0.00052 0.00826 0.00346
O7 0.01174 0.01646 0.01467 -0.00103 0.00310 -0.00259
O8 0.01266 0.01906 0.01380 0.00414 0.00619 0.00259
_cod_database_code 9000508