data_9009292
_publ_section_title
;
 Crystal structure refinements of buetschliite and eitelite:
 a contribution to the stereochemistry of trigonal carbonate minerals
 Note: synthetic
;
_journal_name_full               'Neues Jahrbuch fur Mineralogie, Monatshefte'
_journal_page_first              230
_journal_page_last               236
_journal_volume                  1980
_journal_year                    1980
_chemical_formula_sum            'C2 Ca K2 O6'
_chemical_name_mineral           Butschliite
_space_group_IT_number           166
_symmetry_space_group_name_Hall  '-R 3 2"'
_symmetry_space_group_name_H-M   'R -3 m :H'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_length_a                   5.387
_cell_length_b                   5.387
_cell_length_c                   18.16
_cell_volume                     456.395
_exptl_crystal_density_diffrn    2.601
_[local]_cod_cif_authors_sg_H-M  'R -3 m'
_[local]_cod_chemical_formula_sum_orig 'K2 Ca C2 O6'
_cod_database_code               9009292
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
x,x-y,z
2/3+x,1/3+x-y,1/3+z
1/3+x,2/3+x-y,2/3+z
y,x,-z
2/3+y,1/3+x,1/3-z
1/3+y,2/3+x,2/3-z
-x+y,y,z
2/3-x+y,1/3+y,1/3+z
1/3-x+y,2/3+y,2/3+z
-x,-x+y,-z
2/3-x,1/3-x+y,1/3-z
1/3-x,2/3-x+y,2/3-z
-y,-x,z
2/3-y,1/3-x,1/3+z
1/3-y,2/3-x,2/3+z
x-y,-y,-z
2/3+x-y,1/3-y,1/3-z
1/3+x-y,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
K 0.00000 0.00000 0.20909
Ca 0.00000 0.00000 0.00000
C 0.00000 0.00000 0.58945
O 0.13763 -0.13763 0.58736
