#------------------------------------------------------------------------------
#$Date: 2024-05-06 09:39:41 +0200 (Mon 06 de May de 2024) $
#$Revision: 291735 $
#$URL: svn://www.crystallography.net/cod/cif/9/00/95/9009528.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_9009528
loop_
_publ_author_name
'Pyatenko, Y. A.'
'Bokii, G. B.'
'Belov, N. V.'
_publ_section_title
;
 The X-ray analysis of the crystal structure of chkalovite
;
_journal_name_full               'Doklady Akademii Nauk SSSR'
_journal_page_first              1077
_journal_page_last               1080
_journal_volume                  108
_journal_year                    1956
_chemical_formula_sum            'Be Na2 O6 Si2'
_chemical_name_mineral           Chkalovite
_space_group_IT_number           70
_symmetry_space_group_name_Hall  'F 2 2 -1d'
_symmetry_space_group_name_H-M   'F d d d :1'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_length_a                   21.1
_cell_length_b                   21.1
_cell_length_c                   6.87
_cell_formula_units_Z            24
_cell_volume                     3058.593
_database_code_amcsd             0012436
_exptl_crystal_density_diffrn    2.699
_cod_original_sg_symbol_H-M      'F d d d'
_cod_original_formula_sum        'Be Si2 Na2 O6'
_cod_database_code               9009528
loop_
_space_group_symop_operation_xyz
x,y,z
x,1/2+y,1/2+z
1/2+x,y,1/2+z
1/2+x,1/2+y,z
3/4+x,1/4-y,3/4+z
3/4+x,3/4-y,1/4+z
1/4+x,1/4-y,1/4+z
1/4+x,3/4-y,3/4+z
-x,y,-z
-x,1/2+y,1/2-z
1/2-x,y,1/2-z
1/2-x,1/2+y,-z
1/4-x,3/4+y,3/4+z
1/4-x,1/4+y,1/4+z
3/4-x,3/4+y,1/4+z
3/4-x,1/4+y,3/4+z
x,-y,-z
x,1/2-y,1/2-z
1/2+x,-y,1/2-z
1/2+x,1/2-y,-z
3/4+x,3/4+y,1/4-z
3/4+x,1/4+y,3/4-z
1/4+x,3/4+y,3/4-z
1/4+x,1/4+y,1/4-z
-x,-y,z
-x,1/2-y,1/2+z
1/2-x,-y,1/2+z
1/2-x,1/2-y,z
1/4-x,1/4-y,1/4-z
1/4-x,3/4-y,3/4-z
3/4-x,1/4-y,3/4-z
3/4-x,3/4-y,1/4-z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Be1 0.00000 0.00000 0.00000
Be2 0.00000 0.33000 0.00000
Si1 0.34600 0.00000 0.00000
Si2 0.07100 0.09300 0.25000
Na1 0.15400 0.00000 0.00000
Na2 0.07100 0.09300 0.75000
O1 0.12500 0.12500 0.12500
O2 0.04000 0.03000 0.16000
O3 0.03000 0.13000 0.37000
O4 0.13000 0.06000 0.37000
O5 0.20000 0.04000 0.66000
loop_
_cod_related_entry_id
_cod_related_entry_database
_cod_related_entry_code
1 AMCSD 0012436
