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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/9/00/74/9007499.cif $
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#
# 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_9007499
loop_
_publ_author_name
'Shi-bin X'
'Hai-fu F'
'Xiao-jing W'
'Fang-hua L'
_publ_section_title
;
 Direct methods in superspace. II The first application to an unknown
 incommensurate modulated structure
 Note: this is the average structure, isomorphous with hollandite
 Note: y-coordinate of O2 altered from .248 to make regular TiO6 polyhedra
 Locality: Shiti barite deposit, Ankang County, Shaanxi, China
;
_journal_name_full               'Acta Crystallographica, Section A'
_journal_page_first              929
_journal_page_last               934
_journal_volume                  46
_journal_year                    1990
_chemical_formula_sum            'Ba0.4 O8 Ti4'
_chemical_name_mineral           Ankangite
_space_group_IT_number           87
_symmetry_space_group_name_Hall  '-I 4'
_symmetry_space_group_name_H-M   'I 4/m'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   10.12
_cell_length_b                   10.12
_cell_length_c                   2.96
_cell_volume                     303.147
_exptl_crystal_density_diffrn    4.102
_[local]_cod_chemical_formula_sum_orig 'Ba.4 Ti4 O8'
_cod_database_code               9007499
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
1/2+x,1/2+y,1/2+z
y,-x,-z
1/2+y,1/2-x,1/2-z
-y,x,z
1/2-y,1/2+x,1/2+z
x,y,-z
1/2+x,1/2+y,1/2-z
-x,-y,z
1/2-x,1/2-y,1/2+z
-y,x,-z
1/2-y,1/2+x,1/2-z
y,-x,z
1/2+y,1/2-x,1/2+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
_atom_site_U_iso_or_equiv
Ba 0.00000 0.00000 0.50000 0.40000 0.00633
Ti 0.36600 0.15500 0.00000 1.00000 0.03166
O1 0.16500 0.19800 0.00000 1.00000 0.03800
O2 0.57200 0.14800 0.00000 1.00000 0.04749