#------------------------------------------------------------------------------
#$Date: 2024-04-18 17:56:43 +0200 (Thu 18 de Apr de 2024) $
#$Revision: 291269 $
#$URL: svn://www.crystallography.net/cod/cif/9/00/08/9000801.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_9000801
loop_
_publ_author_name
'Levien, L.'
'Prewitt, C. T.'
_publ_section_title
;
 High-pressure structural study of diopside
 P = 53.0  kbar
 pyroxene
;
_journal_name_full               'American Mineralogist'
_journal_page_first              315
_journal_page_last               323
_journal_volume                  66
_journal_year                    1981
_chemical_formula_sum            'Ca Mg O6 Si2'
_chemical_name_mineral           Diopside
_space_group_IT_number           15
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_cell_angle_alpha                90
_cell_angle_beta                 105.32
_cell_angle_gamma                90
_cell_length_a                   9.612
_cell_length_b                   8.765
_cell_length_c                   5.1793
_cell_formula_units_Z            4
_cell_volume                     420.846
_database_code_amcsd             0000815
_diffrn_ambient_pressure         5.3e+06
_exptl_crystal_density_diffrn    3.418
_cod_original_formula_sum        'Si2 Mg Ca O6'
_cod_database_code               9000801
loop_
_space_group_symop_operation_xyz
x,y,z
1/2+x,1/2+y,z
x,-y,1/2+z
1/2+x,1/2-y,1/2+z
-x,y,1/2-z
1/2-x,1/2+y,1/2-z
-x,-y,-z
1/2-x,1/2-y,-z
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
Si 0.00348 0.00506 0.00392 -0.00045 0.00094 -0.00067
Mg1 0.00479 0.00545 0.00354 0.00000 0.00070 0.00000
Ca2 0.00914 0.00623 0.00518 0.00000 0.00000 0.00000
O1 0.00610 0.00701 0.00581 0.00041 0.00188 -0.00111
O2 0.00653 0.00739 0.00632 -0.00123 0.00094 -0.00067
O3 0.00697 0.00778 0.00493 -0.00041 0.00141 -0.00111
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Si 0.28640 0.09460 0.22790
Mg1 0.00000 0.90970 0.25000
Ca2 0.00000 0.30400 0.25000
O1 0.11470 0.08800 0.14140
O2 0.36080 0.25420 0.32120
O3 0.35270 0.02130 0.98890
loop_
_cod_related_entry_id
_cod_related_entry_database
_cod_related_entry_code
1 AMCSD 0000815
