#------------------------------------------------------------------------------
#$Date: 2024-08-07 19:09:39 +0200 (Wed 07 de Aug de 2024) $
#$Revision: 294031 $
#$URL: svn://www.crystallography.net/cod/cif/9/00/34/9003426.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_9003426
loop_
_publ_author_name
'Thompson, R. M.'
'Downs, R. T.'
_publ_section_title
;Model pyroxenes II: Structural variation as a function of tetrahedral
 rotation model orthopx with O3A-O3A-O3A angle = 180, O3B-O3B-O3B angle = 180,
 and model oxygen radius = 1 Note: Atoms Mg, Si, and O are assigned to atomic
 positions for convenience
;
_journal_name_full               'American Mineralogist'
_journal_page_first              614
_journal_page_last               628
_journal_volume                  89
_journal_year                    2004
_chemical_formula_sum            'Mg O3 Si'
_chemical_name_mineral           Pyroxene-ideal
_space_group_IT_number           61
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            16
_cell_length_a                   14.074
_cell_length_b                   6.928
_cell_length_c                   4
_cell_volume                     390.019
_database_code_amcsd             0003515
_exptl_crystal_density_diffrn    6.839
_cod_original_formula_sum        'Mg Si O3'
_cod_database_code               9003426
loop_
_space_group_symop_operation_xyz
x,y,z
x,1/2-y,1/2+z
-x,1/2+y,1/2-z
1/2-x,1/2+y,z
1/2+x,1/2-y,-z
1/2+x,y,1/2-z
1/2-x,-y,1/2+z
-x,-y,-z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Mg1 0.37500 0.66667 0.91667
Mg2 0.37500 0.50000 0.41667
SiA 0.27900 0.33333 0.08333
SiB 0.47100 0.33333 0.75000
O1A 0.19200 0.33333 0.08333
O2A 0.30800 0.50000 0.08333
O3A 0.30800 0.25000 0.83333
O1B 0.55800 0.33333 0.75000
O2B 0.44200 0.50000 0.75000
O3B 0.44200 0.25000 0.50000
loop_
_cod_changelog_entry_id
_cod_changelog_entry_author
_cod_changelog_entry_date
_cod_changelog_entry_text
1
;cod-tools version 3.10.1
Id: cif_fix_AMCSD_atom_labels 10224 2024-08-07 11:09:31Z saulius
;
2024-08-07T19:38:58+03:00
;Changed the following '_atom_site_label' values:
the first duplicated label 'Mg'  converted to 'Mg1'
duplicated label 'Mg' at index 1 converted to 'Mg2'
;
loop_
_cod_related_entry_id
_cod_related_entry_database
_cod_related_entry_code
1 AMCSD 0003515
