data_global _chemical_name_mineral 'Stannite' loop_ _publ_author_name 'Brockway L O' _journal_name_full 'Zeitschrift fur Kristallographie' _journal_volume 89 _journal_year 1934 _journal_page_first 434 _journal_page_last 441 _publ_section_title ; The crystal structure of stannite, Cu2FeSnS4 ; _database_code_amcsd 0010546 _chemical_compound_source 'Oruro, Bolivia' _chemical_formula_sum 'Cu2 Fe Sn S4' _cell_length_a 5.46 _cell_length_b 5.46 _cell_length_c 10.725 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 319.729 _exptl_crystal_density_diffrn 4.466 _symmetry_space_group_name_H-M 'I -4 2 m' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,1/2+z' '-y,-x,z' '1/2-y,1/2-x,1/2+z' 'y,-x,-z' '1/2+y,1/2-x,1/2-z' '-x,y,-z' '1/2-x,1/2+y,1/2-z' '-x,-y,z' '1/2-x,1/2-y,1/2+z' 'y,x,z' '1/2+y,1/2+x,1/2+z' '-y,x,-z' '1/2-y,1/2+x,1/2-z' 'x,-y,-z' '1/2+x,1/2-y,1/2-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Cu 0.50000 0.00000 0.25000 Fe 0.00000 0.00000 0.00000 Sn 0.00000 0.00000 0.50000 S 0.24500 0.24500 0.13200