data_global
_chemical_name_mineral 'Volynskite'
loop_
_publ_author_name
'Bayliss P'
_journal_name_full 'American Mineralogist'
_journal_volume 76 
_journal_year 1991
_journal_page_first 257
_journal_page_last 265
_publ_section_title
;
 Crystal chemistry and crystallography of some minerals in the tetradymite group
;
_database_code_amcsd 0001346
_chemical_formula_sum 'Ag Bi Te2'
_cell_length_a 4.468
_cell_length_b 4.468
_cell_length_c 20.75
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 358.736
_exptl_crystal_density_diffrn      7.944
_symmetry_space_group_name_H-M 'P -3 m 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-y,-x,z'
  'y,-x+y,-z'
  '-x,-x+y,-z'
  '-x+y,-x,z'
  '-x+y,y,z'
  '-x,-y,-z'
  'y,x,-z'
  '-y,x-y,z'
  'x,x-y,z'
  'x-y,x,-z'
  'x-y,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Ag   0.00000   0.00000   0.50000
Ag   0.33333   0.66667   0.66667
Bi   0.00000   0.00000   0.00000
Bi   0.33333   0.66667   0.16300
Te   0.00000   0.00000   0.25000
Te   0.33333   0.66667   0.41700
Te   0.33333   0.66667   0.91700