data_global _chemical_name_mineral 'Digenite' loop_ _publ_author_name 'Donnay G' 'Donnay J D H' 'Kullerud G' _journal_name_full 'American Mineralogist' _journal_volume 43 _journal_year 1958 _journal_page_first 228 _journal_page_last 242 _publ_section_title ; Crystal and twin structure of digenite, Cu9S5 ; _database_code_amcsd 82 _chemical_formula_sum 'Cu17 S9' _cell_length_a 16.16 _cell_length_b 16.16 _cell_length_c 16.16 _cell_angle_alpha 13.93 _cell_angle_beta 13.93 _cell_angle_gamma 13.93 _cell_volume 212.851 _exptl_crystal_density_diffrn 10.679 _symmetry_space_group_name_H-M 'R -3 m ' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x,-z,-y' '-z,-x,-y' 'y,x,z' 'y,z,x' '-z,-y,-x' '-x,-y,-z' 'x,z,y' 'z,x,y' '-y,-x,-z' '-y,-z,-x' 'z,y,x' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Cu 0.5 0.5 0.5 Cu 0.06 0.06 0.06 Cu -0.06 -0.06 -0.06 Cu 0.133 0.133 0.133 Cu -0.133 -0.133 -0.133 Cu 0.25 0.25 0.25 Cu -0.25 -0.25 -0.25 Cu 0.35 0.35 0.35 Cu -0.35 -0.35 -0.35 S 0.0 0.0 0.0 S 0.2 0.2 0.2 S -0.2 -0.2 -0.2 S 0.4 0.4 0.4 S -0.4 -0.4 -0.4