data_global _chemical_name_mineral 'Wuyanzhiite' loop_ _publ_author_name 'Zimmer D' 'Ruiz-Fuertes J' 'Bayarjargal L' 'Haussuhl E' 'Winkler B' 'Zhang J' 'Jin C Q' 'Milman V' 'Alig E' 'Fink L' _journal_name_full 'Physical Review' _journal_volume B96 _journal_year 2017 _journal_page_first _journal_page_last 054108 _publ_section_title ; Phase transition of tetragonal copper sulfide Cu2S at low temperatures ; _database_code_amcsd 0021058 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Cu2 S' _cell_length_a 4.003 _cell_length_b 4.003 _cell_length_c 11.267 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 180.543 _exptl_crystal_density_diffrn 5.855 _symmetry_space_group_name_H-M 'P 43 21 2' loop_ _space_group_symop_operation_xyz 'x,y,z' 'y,x,-z' '1/2-y,1/2+x,3/4+z' '1/2-x,1/2+y,3/4-z' '-x,-y,1/2+z' '-y,-x,1/2-z' '1/2+y,1/2-x,1/4+z' '1/2+x,1/2-y,1/4-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Cu 0.35410 0.00380 0.16720 0.04000 S 0.00910 0.00910 0.00000 0.02000