data_9011458
_publ_section_title
;
 Single crystal X-Ray investigation of norsethite, BaMg(CO3)2:
 one more mineral with an aplanar carbonate group
 Locality: synthetic
 Sample: Model 1
;
_journal_name_full               'Zeitschrift fur Kristallographie'
_journal_page_first              275
_journal_page_last               280
_journal_paper_doi               10.1524/zkri.1985.171.3-4.275
_journal_volume                  171
_journal_year                    1985
_chemical_formula_sum            'C2 Ba Mg O6'
_chemical_name_mineral           Norsethite
_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                   5.022
_cell_length_b                   5.022
_cell_length_c                   16.770
_cell_volume                     366.283
_exptl_crystal_density_diffrn    3.831
_[local]_cod_cif_authors_sg_H-M  'R -3 m'
_[local]_cod_chemical_formula_sum_orig 'Ba Mg C2 O6'
_cod_database_code               9011458
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
Ba 0.00000 0.00000 0.00000
Mg 0.00000 0.00000 0.50000
C 0.00000 0.00000 0.23910
O 0.14630 -0.14630 0.24200
