#------------------------------------------------------------------------------
#$Date: 2024-05-02 13:48:35 +0300 (Thu, 02 May 2024) $
#$Revision: 291455 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/00/64/9006429.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_9006429
loop_
_publ_author_name
'Hugh-Jones D A'
'Chopelas, A.'
'Angel, R. J.'
_publ_section_title
;
 Tetrahedral compression in (Mg,Fe)SiO3 orthopyroxenes
 Sample: P = 2.50 GPa, synthetic En60 orthopyroxene
;
_journal_name_full               'Physics and Chemistry of Minerals'
_journal_page_first              301
_journal_page_last               310
_journal_paper_doi               10.1007/s002690050042
_journal_volume                  24
_journal_year                    1997
_chemical_formula_sum            'Fe0.41 Mg0.59 O3 Si'
_chemical_name_mineral           Enstatite
_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_length_a                   18.197
_cell_length_b                   8.820
_cell_length_c                   5.171
_cell_formula_units_Z            16
_cell_volume                     829.933
_database_code_amcsd             0008011
_diffrn_ambient_pressure         2.5e+06
_exptl_crystal_density_diffrn    3.628
_cod_original_formula_sum        '(Mg.59 Fe.41) Si O3'
_cod_database_code               9006429
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
_atom_site_occupancy
_atom_site_U_iso_or_equiv
MgM1 0.37580 0.65680 0.86630 0.59000 0.00456
FeM1 0.37580 0.65680 0.86630 0.41000 0.00456
MgM2 0.37830 0.48260 0.35970 0.59000 0.00418
FeM2 0.37830 0.48260 0.35970 0.41000 0.00418
SiTA 0.27110 0.34180 0.04580 1.00000 0.00329
SiTB 0.47320 0.33530 0.79800 1.00000 0.00304
O1a 0.18320 0.33930 0.03400 1.00000 0.00456
O2a 0.31030 0.50230 0.04700 1.00000 0.00367
O3a 0.30370 0.22820 0.82300 1.00000 0.00089
O1b 0.56170 0.33640 0.80100 1.00000 0.00570
O2b 0.43350 0.48280 0.69100 1.00000 0.00507
O3b 0.44710 0.19620 0.60300 1.00000 0.00329
loop_
_cod_related_entry_id
_cod_related_entry_database
_cod_related_entry_code
1 AMCSD 0008011
