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#$Date: 2014-07-12 11:06:43 +0300 (Sat, 12 Jul 2014) $
#$Revision: 120115 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/01/49/9014925.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_9014925
loop_
_publ_author_name
'Hejny, C.'
'Miletich, R.'
'Jasser, A.'
'Schouwink, P.'
'Crichton, W.'
'Kahlenberg, V.'
_publ_section_title
;
 Second-order P6c2-P31c transition and structural crystallography of
 the cyclosilicate benitoite, BaTiSi3O9, at high pressure
 Note: P = 1.12 GPa
;
_journal_name_full               'American Mineralogist'
_journal_page_first              1749
_journal_page_last               1763
_journal_volume                  97
_journal_year                    2012
_chemical_compound_source        'San Benito, California, USA'
_chemical_formula_sum            'Ba O9 Si3 Ti'
_chemical_name_mineral           Benitoite
_space_group_IT_number           188
_symmetry_space_group_name_Hall  'P -6c 2'
_symmetry_space_group_name_H-M   'P -6 c 2'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_length_a                   6.6094
_cell_length_b                   6.6094
_cell_length_c                   9.7239
_cell_volume                     367.871
_database_code_amcsd             0019507
_exptl_crystal_density_diffrn    3.733
_[local]_cod_chemical_formula_sum_orig 'Ba Ti Si3 O9'
_cod_database_code               9014925
loop_
_space_group_symop_operation_xyz
x,y,z
x,x-y,-z
-x+y,-x,1/2-z
-y,-x,1/2+z
-y,x-y,z
-x+y,y,-z
x,y,1/2-z
x,x-y,1/2+z
-x+y,-x,z
-y,-x,-z
-y,x-y,1/2-z
-x+y,y,1/2+z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Ba 0.66667 0.33333 0.00000 0.01640
Ti 0.33333 0.66667 0.00000 0.01140
Si 0.07070 0.78210 0.25000 0.00940
O1 0.81000 0.74600 0.25000 0.01000
O2 0.08610 0.65550 0.38780 0.01180
_journal_paper_doi 10.2138/am.2012.4175