data_5000046 _chemical_name_systematic 'Iron arsenic sulfide' _chemical_name_mineral 'Arsenopyrite' loop_ _publ_author_name 'Fuess, H' 'Kratz, T' 'Toepel-Schadt, J' 'Miehe, G' _journal_name_full ; Zeitschrift fuer Kristallographie (149,1979-) ; _journal_volume 179 _journal_year 1987 _journal_page_first 335 _journal_page_last 346 _cell_length_a 6.5456(7) _cell_length_b 9.451(2) _cell_length_c 5.6492(8) _cell_angle_alpha 90 _cell_angle_beta 89.84(1) _cell_angle_gamma 90 _cell_volume 349.5 _cell_formula_units_Z 8 _symmetry_space_group_name_H-M 'C 1 1 21/d' _symmetry_Int_Tables_number 14 _symmetry_cell_setting monoclinic loop_ _symmetry_equiv_pos_as_xyz 'x,y,z' '-x,-y,-z' '1/4+x,3/4+y,1/2-z' '3/4-x,1/4-y,1/2+z' '1/2+x,1/2+y,z' '1/2-x,1/2-y,-z' '3/4+x,1/4+y,1/2-z' '1/4-x,3/4-y,1/2+z' loop_ _atom_type_symbol _atom_type_oxidation_number Fe0 0.000 As0 0.000 S0 0.000 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 Fe1 Fe0 8 ? 0.2769(1) 0.0042(1) 0.0035(1) 1. 0 d As1 As0 8 ? -0.0067(1) 0.1425(1) 0.1286(1) 1. 0 d S1 S0 8 ? 0.5081(1) 0.1638(1) 0.1309(2) 1. 0 d