data_global _chemical_name_mineral 'Pyrite' loop_ _publ_author_name 'Schmid-Beurmann P' 'Lottermoser W' _journal_name_full 'Physics and Chemistry of Minerals' _journal_volume 19 _journal_year 1993 _journal_page_first 571 _journal_page_last 577 _publ_section_title ; 57Fe-Moessbauer spectra, electronic and crystal structure of members of the CuS2-FeS2 solid solution series ; _database_code_amcsd 0007752 _chemical_formula_sum '(Fe.75 Cu.25) S2' _cell_length_a 5.7249 _cell_length_b 5.7249 _cell_length_c 5.7249 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 187.631 _exptl_crystal_density_diffrn 4.315 _symmetry_space_group_name_H-M 'P a 3' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+z,x,1/2-y' 'z,1/2-x,1/2+y' '1/2-z,1/2+x,y' '-z,-x,-y' '1/2+y,1/2-z,-x' '1/2-y,-z,1/2+x' '-y,1/2+z,1/2-x' 'y,z,x' 'x,1/2-y,1/2+z' '1/2-x,1/2+y,z' '1/2+x,y,1/2-z' '-x,-y,-z' '1/2-z,-x,1/2+y' '-z,1/2+x,1/2-y' '1/2+z,1/2-x,-y' 'z,x,y' '1/2-y,1/2+z,x' '1/2+y,z,1/2-x' 'y,1/2-z,1/2+x' '-y,-z,-x' '-x,1/2+y,1/2-z' '1/2+x,1/2-y,-z' '1/2-x,-y,1/2+z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy Fe 0.00000 0.00000 0.00000 0.75000 Cu 0.00000 0.00000 0.00000 0.25000 S 0.39660 0.39660 0.39660 1.00000 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Fe 0.01278 0.01278 0.01278 -0.00664 -0.00664 -0.00664 Cu 0.01278 0.01278 0.01278 -0.00664 -0.00664 -0.00664 S 0.01229 0.01229 0.01229 -0.00199 -0.00199 -0.00199