data_9009270
_publ_section_title
;
 Zur kristallstruktur des calcium-borates Ca3(BO3)2
 Locality: synthetic
;
_journal_name_full               'Neues Jahrbuch fur Mineralogie, Monatshefte'
_journal_page_first              142
_journal_page_last               144
_journal_volume                  1969
_journal_year                    1969
_chemical_formula_sum            'B2 Ca3 O6'
_chemical_name_mineral           Takedaite
_space_group_IT_number           167
_symmetry_space_group_name_Hall  '-R 3 2"c'
_symmetry_space_group_name_H-M   'R -3 c :H'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_length_a                   8.631
_cell_length_b                   8.631
_cell_length_c                   11.855
_cell_volume                     764.812
_exptl_crystal_density_diffrn    3.099
_[local]_cod_cif_authors_sg_H-M  'R -3 c'
_[local]_cod_chemical_formula_sum_orig 'Ca3 B2 O6'
_cod_original_cell_volume        764.811
_cod_database_code               9009270
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,1/2+z
2/3+x,1/3+x-y,5/6+z
1/3+x,2/3+x-y,1/6+z
y,x,1/2-z
2/3+y,1/3+x,5/6-z
1/3+y,2/3+x,1/6-z
-x+y,y,1/2+z
2/3-x+y,1/3+y,5/6+z
1/3-x+y,2/3+y,1/6+z
-x,-x+y,1/2-z
2/3-x,1/3-x+y,5/6-z
1/3-x,2/3-x+y,1/6-z
-y,-x,1/2+z
2/3-y,1/3-x,5/6+z
1/3-y,2/3-x,1/6+z
x-y,-y,1/2-z
2/3+x-y,1/3-y,5/6-z
1/3+x-y,2/3-y,1/6-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
Ca 0.35806 0.00000 0.25000
B 0.00000 0.00000 0.11780
O 0.16580 0.01270 0.11509
