data_global _chemical_name_mineral 'Hilairite-(Pb)' loop_ _publ_author_name 'Zubkova N V' 'Kolitsch U' 'Pekov I V' 'Turchkova A G' 'Vigasina M F' 'Pushcharovsky D Y' 'Tillmanns E' _journal_name_full 'European Journal of Mineralogy' _journal_volume 21 _journal_year 2009 _journal_page_first 495 _journal_page_last 506 _publ_section_title ; Crystal chemistry of Rb-, Sr-, Ba-, Ca- and Pb-exchanged forms of natural hilairite Note: sample was synthesized by cation exchange at 150 C ; _database_code_amcsd 0007285 _chemical_compound_source 'Kirovskii mine, Khibiny alkaline complex, Kola Peninsula, Russia' _chemical_formula_sum 'Pb.821 Na.179 Zr Si3 O11.85 H5.7' _cell_length_a 10.477 _cell_length_b 10.477 _cell_length_c 7.994 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 759.921 _exptl_crystal_density_diffrn 3.573 _symmetry_space_group_name_H-M 'R 3' loop_ _space_group_symop_operation_xyz 'x,y,z' '2/3+x,1/3+y,1/3+z' '1/3+x,2/3+y,2/3+z' '-y,x-y,z' '2/3-y,1/3+x-y,1/3+z' '1/3-y,2/3+x-y,2/3+z' '-x+y,-x,z' '2/3-x+y,1/3-x,1/3+z' '1/3-x+y,2/3-x,2/3+z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_U_iso_or_equiv Pb1a 0.00000 0.00000 0.64793 0.80100 0.02456 Na1a 0.00000 0.00000 0.64793 0.17900 0.02456 Pb1b 0.00000 0.00000 0.45600 0.02000 0.01600 Zr 0.00000 0.00000 0.06932 1.00000 0.01090 Si 0.40987 0.41728 0.53671 1.00000 0.01320 O1 0.09230 0.17720 0.89230 1.00000 0.01790 O2 -0.09230 -0.19130 0.20010 1.00000 0.01940 O3 0.66070 0.01820 0.02310 1.00000 0.02200 Wat 0.01270 0.24220 0.51700 0.95000 0.04600