data_global _chemical_name_mineral 'Pyromorphite' loop_ _publ_author_name 'Dai Y S' 'Hughes J M' _journal_name_full 'The Canadian Mineralogist' _journal_volume 27 _journal_year 1989 _journal_page_first 189 _journal_page_last 192 _publ_section_title ; Crystal-structure refinements of vanadinite and pyromorphite ; _database_code_amcsd 0005226 _chemical_formula_sum 'Pb5 P3 O12 Cl' _cell_length_a 9.9764 _cell_length_b 9.9764 _cell_length_c 7.3511 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 633.623 _exptl_crystal_density_diffrn 7.109 _symmetry_space_group_name_H-M 'P 63/m' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x+y,-x,1/2-z' 'x-y,x,1/2+z' 'y,-x+y,-z' '-y,x-y,z' 'x,y,1/2-z' '-x,-y,1/2+z' 'x-y,x,-z' '-x+y,-x,z' '-y,x-y,1/2-z' 'y,-x+y,1/2+z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Pb1 0.33333 0.66667 0.00480 ? Pb2 0.25429 0.00536 0.25000 ? P 0.41040 0.37870 0.25000 ? O1 0.34300 0.49000 0.25000 0.00320 O2 0.59000 0.47500 0.25000 0.00220 O3 0.35900 0.27400 0.08400 0.00460 Cl 0.00000 0.00000 0.00000 0.00380 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 Pb1 0.01210 0.01210 0.00137 0.00605 0.00000 0.00000 Pb2 0.00794 0.00605 0.01752 0.00303 0.00000 0.00000 P 0.00265 0.00151 0.00849 -0.00019 0.00000 0.00000