data_global _amcsd_formula_title 'Cu1.3333 Er0.8889 S2' loop_ _publ_author_name 'Ballestracci R' 'Bertaut E' _journal_name_full 'Bulletin de la Societe Francaise de Mineralogie et de Cristallographie' _journal_volume 88 _journal_year 1965 _journal_page_first 575 _journal_page_last 579 _publ_section_title ; Etude cristallographique de nouveaux sulfures de terres rares et de cuivre (I) _cod_database_code 1008188 ; _database_code_amcsd 0016125 _chemical_formula_sum 'Er.889 Cu1.333 S2' _cell_length_a 3.898 _cell_length_b 3.898 _cell_length_c 6.218 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 81.821 _exptl_crystal_density_diffrn 6.039 _symmetry_space_group_name_H-M 'P -3' loop_ _space_group_symop_operation_xyz 'x,y,z' 'y,-x+y,-z' '-x+y,-x,z' '-x,-y,-z' '-y,x-y,z' 'x-y,x,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy Er1 0.00000 0.00000 0.00000 0.88890 Cu1 0.33333 0.66667 0.74700 0.66670 S1 0.33333 0.66667 0.37800 1.00000