#------------------------------------------------------------------------------
#$Date: 2024-08-07 19:09:39 +0200 (Wed 07 de Aug de 2024) $
#$Revision: 294031 $
#$URL: svn://www.crystallography.net/cod/cif/9/00/34/9003432.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_9003432
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 protoenstatite at 1360 K after Yang and Ghose (1995) with
 O3-O3-O3 angle = 168.4 and model oxygen radius = 1.321 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           60
_symmetry_space_group_name_Hall  '-P 2n 2ab'
_symmetry_space_group_name_H-M   'P b c n'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   9.268
_cell_length_b                   9.102
_cell_length_c                   5.255
_cell_volume                     443.298
_database_code_amcsd             0003521
_exptl_crystal_density_diffrn    3.008
_cod_original_formula_sum        'Mg Si O3'
_cod_database_code               9003432
loop_
_space_group_symop_operation_xyz
x,y,z
x,-y,1/2+z
-x,y,1/2-z
1/2-x,1/2+y,z
1/2+x,1/2-y,-z
1/2+x,1/2+y,1/2-z
1/2-x,1/2-y,1/2+z
-x,-y,-z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Mg1 0.00000 0.08333 0.75000
Mg2 0.00000 0.25000 0.25000
Si 0.30820 0.08333 0.08333
O1 0.13370 0.08333 0.08333
O2 0.36630 0.25000 0.11260
O3 0.36630 -0.01460 0.31870
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
;
2024-08-07T19:39:00+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 0003521
