data_9008043
_publ_section_title
;
 The crystal structure of the mineral tetradymite, Bi2Te2S
 Locality: Hungary
;
_journal_name_full               'Zeitschrift fur Kristallographie'
_journal_page_first              175
_journal_page_last               181
_journal_volume                  89
_journal_year                    1934
_chemical_formula_sum            'Bi2 S Te2'
_chemical_name_mineral           Tetradymite
_space_group_IT_number           148
_symmetry_space_group_name_Hall  '-P 3*'
_symmetry_space_group_name_H-M   'R -3 :R'
_cell_angle_alpha                24.17
_cell_angle_beta                 24.17
_cell_angle_gamma                24.17
_cell_length_a                   10.33
_cell_length_b                   10.33
_cell_length_c                   10.33
_cell_volume                     162.410
_exptl_crystal_density_diffrn    7.210
_[local]_cod_cif_authors_sg_H-M  'R -3'
_[local]_cod_chemical_formula_sum_orig 'Bi2 Te2 S'
_cod_database_code               9008043
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
-z,-x,-y
y,z,x
-x,-y,-z
z,x,y
-y,-z,-x
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Bi 0.39200 0.39200 0.39200
Te 0.78800 0.78800 0.78800
S 0.00000 0.00000 0.00000
