data_global _chemical_name_mineral 'Hilairite-(Rb)' 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 0007281 _chemical_compound_source 'Kirovskii mine, Khibiny alkaline complex, Kola Peninsula, Russia' _chemical_formula_sum 'Rb3.61 Na.39 Zr2 Si6 O18.69 H1.38' _cell_length_a 10.477 _cell_length_b 10.477 _cell_length_c 15.377 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 1461.760 _exptl_crystal_density_diffrn 3.302 _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 Rb1 0.00000 0.00000 -0.06577 1.00000 0.03552 Rb2 0.33400 0.89493 0.10497 0.87000 0.03780 Na2 0.33400 0.89493 0.10497 0.13000 0.03780 Zr1 0.00000 0.00000 0.19048 1.00000 0.01237 Zr2 0.33333 0.66667 0.33918 1.00000 0.01029 Si1 0.34080 0.23028 0.10909 1.00000 0.01930 Si2 0.05776 0.72870 0.27305 1.00000 0.02150 O1 0.18780 0.07650 0.11340 1.00000 0.02530 O2 0.20940 0.72600 0.26410 1.00000 0.02530 O3 0.11120 0.18670 0.26740 1.00000 0.02490 O4 0.40190 0.85300 0.41760 1.00000 0.01490 O5 0.93800 0.62030 0.20360 1.00000 0.02770 O6 0.32390 0.33860 0.04110 1.00000 0.03050 Wat 0.73300 0.74100 -0.04900 0.23000 0.05100