data_1011213
_chemical_name_systematic          'Silver trithioarsenate(III)'
_chemical_name_mineral             'Proustite'
_chemical_compound_source          'from Jachymov, Bohemia'
_chemical_formula_structural       'Ag3 (As S3)'
_chemical_formula_sum              'Ag3 As S3'
_publ_section_title
;
Schema structural de la proustite et de la pyrargyrite.
;
_publ_author_name                  'Hocart, R'
_journal_name_full
;
Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences
(1884 - 1965)
;
_journal_coden_ASTM                COREAF
_journal_volume                    205
_journal_year                      1937
_journal_page_first                68
_journal_page_last                 70
_cell_length_a                     6.88
_cell_length_b                     6.88
_cell_length_c                     6.88
_cell_angle_alpha                  103.42
_cell_angle_beta                   103.42
_cell_angle_gamma                  103.42
_cell_volume                       293.7
_cell_formula_units_Z              2
_exptl_crystal_density_meas        5.59
_symmetry_space_group_name_H-M     'R 3 c R'
_symmetry_Int_Tables_number        161
_symmetry_cell_setting             trigonal
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '1/2+y,1/2+x,1/2+z'
  'y,z,x'
  '1/2+x,1/2+z,1/2+y'
  'z,x,y'
  '1/2+z,1/2+y,1/2+x'
loop_
_atom_type_symbol
_atom_type_oxidation_number
  As3+   3.000
  Ag1+   1.000
  S2-   -2.000
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_symmetry_multiplicity
_atom_site_Wyckoff_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_attached_hydrogens
_atom_site_calc_flag
  As1   As3+   2 a 0.0852 0.0852 0.0852 1.  0 d
  Ag1   Ag1+   6 b 0.633 0.5 0. 1.  0 d
  S1    S2-    6 b 0.806 0.194 0. 1.  0 d