#------------------------------------------------------------------------------
#$Date: 2024-08-07 20:09:39 +0300 (Wed, 07 Aug 2024) $
#$Revision: 294031 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/00/34/9003430.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_9003430
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 orthoenstatite at 8.10 GPa after Hugh-Jones and Angel (1994)
 with O3A-O3A-O3A angle = 158.5, O3B-O3B-O3B angle = 136.4, and model oxygen
 radius = 1.276
;
_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                   18.027
_cell_length_b                   8.683
_cell_length_c                   5.013
_cell_volume                     784.677
_database_code_amcsd             0003519
_exptl_crystal_density_diffrn    3.399
_cod_original_formula_sum        'Mg Si O3'
_cod_database_code               9003430
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 0.37330 0.66667 0.85900
Mg2 0.37330 0.50000 0.35900
SiA 0.27890 0.33333 0.08040
SiB 0.46940 0.33333 0.80770
O1A 0.19220 0.33333 0.08040
O2A 0.30780 0.50000 0.02560
O3A 0.30780 0.22260 0.85780
O1B 0.56110 0.33333 0.80770
O2B 0.43890 0.50000 0.69230
O3B 0.43890 0.19230 0.61540
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
;
2024-08-07T19:38:59+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 0003519
