data_global _chemical_name_mineral 'Britvinite' loop_ _publ_author_name 'Yakubovich O V' 'Massa W' 'Chukanov N V' _journal_name_full 'Crystallography Reports' _journal_volume 53 _journal_year 2008 _journal_page_first 206 _journal_page_last 215 _publ_section_title ; Crystal structure of britvinite [Pb7(OH)3F(BO3)2(CO3)][Mg4.5(OH)3(Si5O14)]: A new layered silicate with an original type of silicon-oxygen networks ; _database_code_amcsd 0012396 _chemical_compound_source 'Varmland, Sweden' _chemical_formula_sum 'Si10.532 Mg9 Pb14.144 C2 B3.468 O58 F2' _cell_length_a 9.3409 _cell_length_b 9.3579 _cell_length_c 18.8333 _cell_angle_alpha 80.365 _cell_angle_beta 75.816 _cell_angle_gamma 59.870 _cell_volume 1378.475 _exptl_crystal_density_diffrn 5.388 _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_occupancy _atom_site_U_iso_or_equiv Si1 0.66380 0.64310 0.34874 1.00000 0.01490 Si2 0.36030 0.29500 0.34902 1.00000 0.01420 Si3 0.67530 0.96000 0.35497 1.00000 0.01470 Si4 0.34230 0.62720 0.35457 1.00000 0.01350 Si5 0.01070 0.94660 0.34929 1.00000 0.01320 Mg1 0.50000 0.50000 0.50000 1.00000 0.01360 Mg2 0.83690 0.16640 0.49640 1.00000 0.01340 Mg3 0.16710 0.16890 0.49590 1.00000 0.01310 Mg4 0.83540 0.49870 0.49710 1.00000 0.01280 Mg5 0.49930 0.83300 0.50000 1.00000 0.01340 Pb1 0.06509 0.53207 0.23857 0.95200 0.02045 Pb1A 0.17300 0.65300 0.23400 0.02000 0.03200 Pb1B 0.97300 0.71900 0.23600 0.01200 0.03200 Pb2 0.28960 0.07376 0.23590 0.96100 0.01878 Pb2A 0.40600 0.87500 0.23500 0.02000 0.03200 Pb2B 0.50200 0.97300 0.23800 0.01200 0.03200 Pb3 0.82941 0.30837 0.23655 0.95800 0.01878 Pb3A 0.74400 0.19100 0.24000 0.01600 0.03200 Pb3B 0.63100 0.40900 0.24100 0.01400 0.03200 Pb4 0.77275 0.97209 0.14948 0.96400 0.02990 Pb5 0.43590 0.63950 0.14800 0.60000 0.02790 Pb5A 0.44050 0.66090 0.13830 0.35000 0.03410 Pb6 0.83600 0.24320 0.99670 0.44000 0.04630 Pb6A 0.91900 0.23960 0.01380 0.20200 0.03180 Pb6B 0.78500 0.28000 0.00430 0.26000 0.04200 Pb6C 0.72280 0.37900 0.00150 0.05300 0.03200 Pb7 0.11880 0.31660 0.07760 0.43300 0.05210 Pb7A 0.13970 0.36220 0.07720 0.34600 0.02370 Pb8 0.57160 0.05210 0.99950 0.28300 0.03020 Pb8A 0.60980 0.97120 0.98570 0.17600 0.02480 C1 0.78300 0.65050 0.11680 1.00000 0.02800 B1 0.10710 0.97840 0.12800 1.00000 0.02200 B2 0.44700 0.31500 0.12840 0.73400 0.01300 Si6 0.46440 0.32120 0.08080 0.26600 0.01300 O1 0.63610 0.62070 0.43780 1.00000 0.01510 O2 0.45020 0.67700 0.02770 1.00000 0.04600 O3 0.23220 0.29340 0.30540 1.00000 0.02110 O4 0.03310 0.38160 0.55640 1.00000 0.01560 O5 0.96800 0.28290 0.44320 1.00000 0.01320 O6 0.36650 0.71530 0.55600 1.00000 0.01540 O7 0.97170 0.95040 0.43850 1.00000 0.01510 O8 0.30710 0.28740 0.43750 1.00000 0.01400 O9 0.83510 0.50240 0.30640 1.00000 0.02210 O10 0.70050 0.04940 0.55530 1.00000 0.01490 O11 0.63610 0.95070 0.44300 1.00000 0.01480 O12 0.30470 0.61560 0.44220 1.00000 0.01350 O13 0.37480 0.46290 0.32020 1.00000 0.02190 O14 0.86770 0.92710 0.32160 1.00000 0.02330 O15 0.50750 0.64960 0.33100 1.00000 0.02140 O16 0.54870 0.14180 0.32260 1.00000 0.02040 O17 0.18730 0.78240 0.32200 1.00000 0.02230 O18 0.91770 0.65120 0.11660 1.00000 0.03400 O19 0.02120 0.10550 0.30480 1.00000 0.02310 O20 0.75070 0.01820 0.87460 1.00000 0.03600 O21 0.82450 0.00650 0.02890 1.00000 0.03000 O22 0.65330 0.82350 0.32220 1.00000 0.01970 O23 0.89370 0.16070 0.87320 1.00000 0.02800 O24 0.77970 0.51480 0.11550 1.00000 0.03500 O25 0.64520 0.78670 0.12180 1.00000 0.03700 O26 0.30230 0.45790 0.12220 1.00000 0.04500 O27 0.58250 0.31520 0.12990 1.00000 0.03900 O28 0.45020 0.17200 0.12730 1.00000 0.03500 O29 0.95990 0.12230 0.13070 1.00000 0.03400 F1 0.07890 0.31180 0.19420 0.71900 0.01070 F1a 0.10100 0.31700 0.14720 0.28100 0.01070