#------------------------------------------------------------------------------
#$Date: 2008-03-10 10:25:41 +0200 (Mon, 10 Mar 2008) $
#$Revision: 255 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/9000298.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_9000298
loop_
_publ_author_name
'Pabst A'
_publ_section_title
;
 The crystallography and structure of eitelite, Na2Mg(CO3)2
;
_journal_name_full               'American Mineralogist'
_journal_page_first              211
_journal_page_last               217
_journal_volume                  58
_journal_year                    1973
_chemical_formula_sum            'Na2 Mg C2 O6'
_chemical_name_mineral           Eitelite
_symmetry_space_group_name_H-M   'R -3'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_length_a                   4.942
_cell_length_b                   4.942
_cell_length_c                   16.406
_cell_volume                     347.007
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
2/3+x,1/3+y,1/3+z
1/3+x,2/3+y,2/3+z
y,-x+y,-z
2/3+y,1/3-x+y,1/3-z
1/3+y,2/3-x+y,2/3-z
-x+y,-x,z
2/3-x+y,1/3-x,1/3+z
1/3-x+y,2/3-x,2/3+z
-x,-y,-z
2/3-x,1/3-y,1/3-z
1/3-x,2/3-y,2/3-z
-y,x-y,z
2/3-y,1/3+x-y,1/3+z
1/3-y,2/3+x-y,2/3+z
x-y,x,-z
2/3+x-y,1/3+x,1/3-z
1/3+x-y,2/3+x,2/3-z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Na 0.00000 0.00000 0.19600 0.00507
Mg 0.00000 0.00000 0.00000 0.00507
C 0.00000 0.00000 0.41000 0.00507
O 0.29300 0.09200 0.41000 0.00507