data_global
_chemical_name_mineral 'Sylvanite'
loop_
_publ_author_name
'Tunell G'
_journal_name_full 'American Mineralogist'
_journal_volume 26
_journal_year 1941
_journal_page_first 457
_journal_page_last 477
_publ_section_title
;
 The atomic arrangement of sylvanite
;
_database_code_amcsd 29
_chemical_formula_sum 'Au Ag Te4'
_cell_length_a 8.94
_cell_length_b 4.48
_cell_length_c 14.59
_cell_angle_alpha 90.0
_cell_angle_beta 145.43
_cell_angle_gamma 90.0
_cell_volume 331.566
_exptl_crystal_density_diffrn  8.166
_symmetry_space_group_name_H-M 'P 1 2/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,-y,1/2+z'
  '-x,y,1/2-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Au   0.0  0.0  0.0
Ag   0.0  0.433  0.25
Te1   0.298  0.031  0.999
Te2   0.277  0.425  0.235