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 0005581 _chemical_compound_source 'Ilimaussaq, Greenland' _chemical_formula_sum 'Si4 P2 Nb2 Ti2 Na11 O26' _cell_length_a 5.4984 _cell_length_b 7.161 _cell_length_c 14.450 _cell_angle_alpha 92.60 _cell_angle_beta 95.30 _cell_angle_gamma 90.60 _cell_volume 565.878 _exptl_crystal_density_diffrn 3.300 _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 _atom_site_U_iso_or_equiv Si1 0.18415 0.21928 0.69712 ? Si2 0.19844 0.79366 0.68464 ? P 0.31392 0.25633 0.06638 ? Nb 0.30112 0.49172 0.28387 ? Ti 0.97235 0.00088 0.50786 0.00580 Na1 0.18320 0.98210 0.89970 ? Na2 0.19530 0.50790 0.86600 ? Na3 0.49450 0.24060 0.50100 ? Na4 0.70530 0.99260 0.73580 ? Na5 0.24930 0.73690 0.08030 ? Na6 0.00000 0.50000 0.50000 ? O1 0.43490 0.32350 0.74270 ? O2 0.20360 0.00570 0.73500 ? O3 0.16140 0.80170 0.57380 ? O4 0.46020 0.70990 0.71900 ? O5 0.05180 0.69640 0.25500 ? O6 0.32310 0.51560 0.40570 ? O7 0.25630 0.43040 0.13020 ? O8 0.23690 0.07340 0.10810 ? O9 0.16020 0.20940 0.58550 ? O10 0.41180 0.74220 0.94340 ? O11 0.17100 0.27450 0.97100 ? O12 0.01730 0.31630 0.27220 ? O13 0.26870 0.00240 0.42300 ? 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 0.00640 0.00480 0.00720 0.00000 0.00090 0.00000 Si2 0.00640 0.00490 0.00700 0.00020 0.00090 0.00050 P 0.00860 0.00730 0.00730 0.00000 0.00100 -0.00050 Nb 0.00500 0.00570 0.00630 0.00030 0.00090 0.00030 Na1 0.02510 0.01580 0.01920 0.00360 0.00090 -0.00040 Na2 0.02320 0.01380 0.01710 -0.00250 -0.00360 -0.00090 Na3 0.01190 0.01540 0.02000 -0.00370 0.00790 -0.00600 Na4 0.01880 0.02050 0.01420 -0.00050 0.00210 0.00040 Na5 0.02710 0.01540 0.02000 0.00150 0.00460 0.00370 Na6 0.01790 0.01940 0.02030 -0.00280 0.00710 -0.00210 O1 0.01060 0.01300 0.01260 -0.00460 0.00060 0.00070 O2 0.01800 0.00580 0.00990 0.00160 0.00160 0.00000 O3 0.01310 0.00990 0.00720 0.00190 0.00080 0.00070 O4 0.01010 0.01220 0.01470 0.00530 -0.00150 -0.00020 O5 0.01000 0.01040 0.01100 0.00390 0.00240 -0.00020 O6 0.01420 0.01830 0.00860 0.00010 0.00180 -0.00050 O7 0.01440 0.00790 0.00920 0.00140 0.00220 -0.00090 O8 0.02170 0.00870 0.01560 -0.00240 0.00390 0.00100 O9 0.01140 0.01000 0.00810 -0.00090 0.00080 -0.00010 O10 0.00870 0.01680 0.02120 0.00030 0.00440 -0.00340 O11 0.02470 0.01570 0.01030 0.00220 -0.00570 -0.00120 O12 0.01160 0.01440 0.01420 0.00620 0.00290 0.00220 O13 0.01750 0.02010 0.01710 -0.00070 0.00320 0.00020