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#$Date: 2024-04-18 18:56:43 +0300 (Thu, 18 Apr 2024) $
#$Revision: 291269 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/00/09/9000901.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_9000901
loop_
_publ_author_name
'Cameron, M.'
'Sueno, S.'
'Papike, J. J.'
'Prewitt, C. T.'
_publ_section_title
;
 High temperature crystal chemistry of K and Na fluor-richterites
 K fluor-richterite  800C
;
_journal_name_full               'American Mineralogist'
_journal_page_first              924
_journal_page_last               943
_journal_volume                  68
_journal_year                    1983
_chemical_formula_sum            'Ca2 F2 K2 Mg5 Na2 O22 Si8'
_chemical_name_mineral           Fluororichterite
_space_group_IT_number           12
_symmetry_space_group_name_Hall  '-I 2y'
_symmetry_space_group_name_H-M   'I 1 2/m 1'
_cell_angle_alpha                90
_cell_angle_beta                 105.85
_cell_angle_gamma                90
_cell_length_a                   10.104
_cell_length_b                   18.159
_cell_length_c                   5.285
_cell_formula_units_Z            2
_cell_volume                     932.817
_database_code_amcsd             0000920
_diffrn_ambient_temperature      1073.15
_exptl_crystal_density_diffrn    3.349
_cod_original_formula_sum        'Si8 Mg5 (Na2 Ca2) K2 O22 F2'
_cod_database_code               9000901
loop_
_space_group_symop_operation_xyz
x,y,z
1/2+x,1/2+y,1/2+z
x,-y,z
1/2+x,1/2-y,1/2+z
-x,y,-z
1/2-x,1/2+y,1/2-z
-x,-y,-z
1/2-x,1/2-y,1/2-z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Si1 0.27485 0.91572 0.97684
Si2 0.28475 0.82934 0.48051
Mg1 0.00000 0.90983 0.50000
Mg2 0.00000 0.81913 0.00000
Mg3 0.00000 0.00000 0.00000
Na 0.00000 0.72160 0.50000
Ca 0.00000 0.72160 0.50000
K 0.47474 0.00000 0.53345
O1 0.11082 0.91458 0.89098
O2 0.11926 0.83062 0.39263
F3 0.10138 0.00000 0.38842
O4 0.36135 0.75374 0.55912
O5 0.34204 0.87221 0.25110
O6 0.33865 0.88144 0.75141
O7 0.33146 0.00000 0.02643
loop_
_cod_related_entry_id
_cod_related_entry_database
_cod_related_entry_code
1 AMCSD 0000920
