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#$Date: 2013-05-09 16:53:25 +0300 (Thu, 09 May 2013) $
#$Revision: 86000 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/01/45/9014535.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_9014535
loop_
_publ_author_name
'Periotto, B.'
'Balic-Zunic T'
'Nestola, F.'
'Katerinopoulou, A.'
'Angel, R. J.'
_publ_section_title
;
 Re-investigation of the crystal structure of enstatite under high-pressure conditions
 Note: P = 6.57(5) GPa
;
_journal_name_full               'American Mineralogist'
_journal_page_first              1741
_journal_page_last               1748
_journal_volume                  97
_journal_year                    2012
_chemical_compound_source        Synthetic
_chemical_formula_sum            'Mg 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                   17.982
_cell_length_b                   8.633
_cell_length_c                   5.0926
_cell_volume                     790.568
_database_code_amcsd             0019521
_exptl_crystal_density_diffrn    3.374
_[local]_cod_chemical_formula_sum_orig 'Mg Si O3'
_cod_database_code               9014535
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_U_iso_or_equiv
Mg2 0.37760 0.48310 0.34880 0.00900
Mg1 0.37620 0.65640 0.85660 0.00780
SiTA 0.27120 0.34360 0.04060 0.00730
SiTB 0.47270 0.33770 0.80340 0.00590
O1A 0.18210 0.33970 0.02380 0.00500
O2A 0.31020 0.50690 0.03240 0.00700
O3A 0.30400 0.22280 0.82300 0.00600
O1B 0.56230 0.33860 0.80680 0.00700
O2B 0.43330 0.48430 0.68170 0.00700
O3B 0.44560 0.19080 0.61480 0.00400