data_global _chemical_name_mineral 'Vuonnemite' loop_ _publ_author_name 'Ercit T S' 'Cooper M A' 'Hawthorne F C' _journal_name_full 'The Canadian Mineralogist' _journal_volume 36 _journal_year 1998 _journal_page_first 1311 _journal_page_last 1320 _publ_section_title ; The crystal structure of vuonnemite, Na11TiNb2(Si2O7)2(PO4)2O3(F,OH), a phosphate-bearing sorosilicate of the lomonosovite group ; _database_code_amcsd 0005582 _chemical_compound_source 'Lovozero, Kola Peninsula, Russia' _chemical_formula_sum 'Si4 P2 Nb2 Ti2 Na11 O26' _cell_length_a 5.4970 _cell_length_b 7.1630 _cell_length_c 14.437 _cell_angle_alpha 92.55 _cell_angle_beta 95.30 _cell_angle_gamma 90.61 _cell_volume 565.404 _exptl_crystal_density_diffrn 3.303 _symmetry_space_group_name_H-M 'P -1' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Si1 0.18446 0.21937 0.69737 Si2 0.19918 0.79300 0.68471 P 0.31393 0.25693 0.06612 Nb 0.30111 0.49199 0.28413 Ti 0.97299 0.00048 0.50810 Na1 0.18370 0.98220 0.89983 Na2 0.19360 0.50820 0.86520 Na3 0.49450 0.24180 0.50112 Na4 0.70600 0.99180 0.73624 Na5 0.25070 0.73680 0.08094 Na6 0.00000 0.50000 0.50000 O1 0.43550 0.32400 0.74295 O2 0.20340 0.00480 0.73487 O3 0.16240 0.80120 0.57348 O4 0.46150 0.70950 0.71855 O5 0.05260 0.69620 0.25513 O6 0.32420 0.51660 0.40636 O7 0.25520 0.43070 0.13009 O8 0.23700 0.07300 0.10740 O9 0.16100 0.20930 0.58525 O10 0.41130 0.74150 0.94321 O11 0.17290 0.27520 0.97009 O12 0.01760 0.31740 0.27290 O13 0.26990 0.00260 0.42335 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 Si1 0.00810 0.00670 0.00880 0.00020 0.00080 0.00010 Si2 0.00780 0.00680 0.00830 0.00020 0.00080 0.00050 P 0.01050 0.00900 0.00920 0.00020 0.00120 -0.00070 Nb 0.00700 0.00790 0.00860 0.00010 0.00080 0.00050 Ti 0.00820 0.00820 0.00640 -0.00040 0.00060 0.00090 Na1 0.02610 0.01740 0.02030 0.00370 0.00080 -0.00070 Na2 0.03020 0.01630 0.02080 -0.00200 -0.00360 -0.00120 Na3 0.01590 0.01990 0.02560 -0.00420 0.00870 -0.00650 Na4 0.02030 0.02420 0.01590 -0.00550 0.00150 -0.00030 Na5 0.03200 0.01620 0.02140 0.00200 0.00570 0.00350 Na6 0.01810 0.02090 0.02230 -0.00310 0.00690 -0.00230 O1 0.01230 0.01550 0.01380 -0.00590 0.00030 0.00000 O2 0.02010 0.00580 0.01070 0.00150 0.00070 0.00040 O3 0.01610 0.01120 0.00860 0.00100 0.00040 0.00120 O4 0.01150 0.01430 0.01730 0.00520 -0.00200 -0.00100 O5 0.01100 0.01230 0.01360 0.00380 0.00260 -0.00040 O6 0.01570 0.02180 0.01060 0.00000 0.00210 -0.00110 O7 0.01690 0.01000 0.01090 0.00160 0.00280 -0.00090 O8 0.02480 0.01000 0.01730 -0.00290 0.00420 0.00120 O9 0.01450 0.01110 0.00880 -0.00080 0.00080 0.00030 O10 0.01190 0.01880 0.02370 0.00070 0.00540 -0.00210 O11 0.02730 0.01750 0.01330 0.00140 -0.00670 -0.00080 O12 0.01410 0.01740 0.01650 -0.00680 0.00280 0.00240 O13 0.01650 0.01840 0.01300 -0.00150 0.00280 0.00070