#------------------------------------------------------------------------------
#$Date: 2024-04-18 18:56:43 +0300 (Thu, 18 Apr 2024) $
#$Revision: 291269 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/00/07/9000724.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_9000724
loop_
_publ_author_name
'Horiuchi, H.'
'Morimoto, N.'
'Yamamoto, K.'
'Akimoto, S. I.'
_publ_section_title
;
 Crystal structure of 2Mg2SiO4.3Mg(OH)2, a new high-pressure structure type
;
_journal_name_full               'American Mineralogist'
_journal_page_first              593
_journal_page_last               598
_journal_volume                  64
_journal_year                    1979
_chemical_formula_sum            'Mg7 O14 Si2'
_chemical_name_common            Phase-A
_chemical_name_mineral           Phase-A
_space_group_IT_number           173
_symmetry_space_group_name_Hall  'P 6c'
_symmetry_space_group_name_H-M   'P 63'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_length_a                   7.8603
_cell_length_b                   7.8603
_cell_length_c                   9.5730
_cell_formula_units_Z            2
_cell_volume                     512.220
_database_code_amcsd             0000737
_exptl_crystal_density_diffrn    2.920
_cod_original_formula_sum        'Mg7 Si2 O14'
_cod_database_code               9000724
loop_
_space_group_symop_operation_xyz
x,y,z
x-y,x,1/2+z
-y,x-y,z
-x,-y,1/2+z
-x+y,-x,z
y,-x+y,1/2+z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Mg1 0.37220 0.45470 0.38570
Mg2 0.22520 0.24380 0.11270
Mg3 0.33333 0.66667 0.10290
Si1 0.66667 0.33333 0.17410
Si2 0.00000 0.00000 0.40180
O1 0.20010 0.02740 -0.02400
O2 0.47660 0.09880 0.48440
O3 0.45380 0.29470 0.23200
O4 0.17040 0.43670 0.23980
O5 0.66667 0.33333 0.00000
O6 0.00000 0.00000 0.23230
loop_
_cod_related_entry_id
_cod_related_entry_database
_cod_related_entry_code
1 AMCSD 0000737
