data_global _chemical_name_mineral 'Marianoite' loop_ _publ_author_name 'Chakhmouradian A R' 'Mitchell R H' 'Burns P C' 'Mikhailova Y' 'Reguir E P' _journal_name_full 'The Canadian Mineralogist' _journal_volume 46 _journal_year 2008 _journal_page_first 1023 _journal_page_last 1032 _publ_section_title ; Marianoite, a new member of the cuspidine group from the Prairie Lake silicocarbonatite, Ontario Note: ordering of elements in M1 and M2 could not be determined ; _database_code_amcsd 0019475 _chemical_compound_source 'Prairie Lake silicocarbonatite, Ontario, Canada' _chemical_formula_sum 'Na2 Ca4 Nb.97 Zr.9 Ti.09 Fe.08 Mg.03 Hf.01 Si4 O17 F' _cell_length_a 10.8459 _cell_length_b 10.2260 _cell_length_c 7.2727 _cell_angle_alpha 90 _cell_angle_beta 109.332 _cell_angle_gamma 90 _cell_volume 761.136 _exptl_crystal_density_diffrn 3.461 _symmetry_space_group_name_H-M 'P 1 21 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x,1/2+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 Na1 0.13060 0.58130 0.44670 1.00000 0.01350 Na2 0.62430 0.23590 0.69120 1.00000 0.01450 Ca1 0.35300 0.34680 0.80030 1.00000 0.01170 Ca2 0.13160 0.57900 0.94630 1.00000 0.01380 Ca3 0.65510 0.84900 0.70060 1.00000 0.01290 Ca4 0.15370 0.96840 0.44780 1.00000 0.01540 NbM1 0.36610 0.71930 0.80450 0.48500 0.00670 ZrM1 0.36610 0.71930 0.80450 0.45000 0.00670 TiM1 0.36610 0.71930 0.80450 0.04500 0.00670 FeM1 0.36610 0.71930 0.80450 0.04000 0.00670 MgM1 0.36610 0.71930 0.80450 0.01500 0.00670 HfM1 0.36610 0.71930 0.80450 0.00500 0.00670 NbM2 0.84130 0.45740 0.05350 0.48500 0.00930 ZrM2 0.84130 0.45740 0.05350 0.45000 0.00930 TiM2 0.84130 0.45740 0.05350 0.04500 0.00930 FeM2 0.84130 0.45740 0.05350 0.04000 0.00930 MgM2 0.84130 0.45740 0.05350 0.01500 0.00930 HfM2 0.84130 0.45740 0.05350 0.00500 0.00930 Si1 0.57210 0.53150 0.63590 1.00000 0.00830 Si2 0.42040 0.03990 0.80380 1.00000 0.00880 Si3 0.93450 0.77920 0.12380 1.00000 0.00840 Si4 0.05970 0.28090 0.43650 1.00000 0.01050 O1 0.47930 0.40730 0.61780 1.00000 0.01160 O2 0.01040 0.13830 0.34950 1.00000 0.01700 O3 0.51830 0.66520 0.69900 1.00000 0.01880 O4 0.49490 0.16530 0.91780 1.00000 0.01380 O5 0.49100 0.90250 0.87910 1.00000 0.01220 O6 0.97240 0.40380 0.32100 1.00000 0.01640 O7 0.72370 0.50270 0.77290 1.00000 0.01600 O8 0.26710 0.04270 0.79120 1.00000 0.01510 O9 0.20620 0.30670 0.47930 1.00000 0.02270 O10 0.96030 0.62980 0.07410 1.00000 0.01480 O11 0.03900 0.88130 0.08750 1.00000 0.01920 O12 0.25400 0.78290 0.95370 1.00000 0.01570 O13 0.02230 0.29230 0.63740 1.00000 0.01750 O14 0.58780 0.56220 0.42130 1.00000 0.02200 O15 0.79280 0.83620 0.02240 1.00000 0.01540 O16 0.28530 0.55930 0.77540 1.00000 0.01370 O17 0.27480 0.78410 0.56350 1.00000 0.01310 F 0.25980 0.55630 0.25360 1.00000 0.00910