data_global _chemical_name_mineral 'Proustite' loop_ _publ_author_name 'Hocart R' _journal_name_full 'Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences' _journal_volume 205 _journal_year 1937 _journal_page_first 68 _journal_page_last 70 _publ_section_title ; Schema structural de la proustite et de la pyrargyrite. _cod_database_code 1011213 ; _database_code_amcsd 0018082 _chemical_formula_sum 'As Ag3 S3' _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 293.710 _exptl_crystal_density_diffrn 5.594 _symmetry_space_group_name_H-M 'R 3 c' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+z,1/2+y' 'z,x,y' '1/2+y,1/2+x,1/2+z' 'y,z,x' '1/2+z,1/2+y,1/2+x' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z As1 0.08520 0.08520 0.08520 Ag1 0.63300 0.50000 0.00000 S1 0.80600 0.19400 0.00000