data_global _chemical_name_mineral 'Leucophanite' loop_ _publ_author_name 'Cannillo E' 'Giuseppetti G' 'Mazzi F' 'Tazzoli V' _journal_name_full 'Zeitschrift fur Kristallographie' _journal_volume 202 _journal_year 1992 _journal_page_first 71 _journal_page_last 79 _publ_section_title ; The crystal structure of a rare earth bearing leucophanite: (Ca,RE)CaNa2Be2Si4O12(F,O)2 ; _database_code_amcsd 0011026 _chemical_compound_source 'Mt Saint Hilaire, Quebec, Canada' _chemical_formula_sum 'Ca3.94 Ce.12 Nd.09 La.06 Pr.03 Na3.76 Be4 Si8 O24.54 F3.46' _cell_length_a 7.417 _cell_length_b 7.398 _cell_length_c 9.986 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 547.941 _exptl_crystal_density_diffrn 3.048 _symmetry_space_group_name_H-M 'P 1' loop_ _space_group_symop_operation_xyz '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 Caa 0.10370 -0.17110 0.00960 0.92000 0.00980 CeCaa 0.10370 -0.17110 0.00960 0.03200 0.00980 NdCaa 0.10370 -0.17110 0.00960 0.02400 0.00980 LaCaa 0.10370 -0.17110 0.00960 0.01600 0.00980 PrCaa 0.10370 -0.17110 0.00960 0.00800 0.00980 Cab -0.10300 0.33060 0.49040 0.82000 0.01050 CeCab -0.10300 0.33060 0.49040 0.07200 0.01050 NdCab -0.10300 0.33060 0.49040 0.05400 0.01050 LaCab -0.10300 0.33060 0.49040 0.03600 0.01050 PrCab -0.10300 0.33060 0.49040 0.01800 0.01050 Cac 0.39630 0.17200 -0.49030 0.98000 0.01150 CeCac 0.39630 0.17200 -0.49030 0.00800 0.01150 NdCac 0.39630 0.17200 -0.49030 0.00600 0.01150 LaCac 0.39630 0.17200 -0.49030 0.00400 0.01150 PrCac 0.39630 0.17200 -0.49030 0.00200 0.01150 Cad -0.39630 -0.32820 -0.01000 0.98000 0.01070 CeCad -0.39630 -0.32820 -0.01000 0.00800 0.01070 NdCad -0.39630 -0.32820 -0.01000 0.00600 0.01070 LaCad -0.39630 -0.32820 -0.01000 0.00400 0.01070 PrCad -0.39630 -0.32820 -0.01000 0.00200 0.01070 Naa 0.07420 -0.14730 0.49730 0.93000 0.02040 CaNaa 0.07420 -0.14730 0.49730 0.07000 0.02040 Nab -0.07340 0.35260 0.00340 0.98000 0.02020 CaNab -0.07340 0.35260 0.00340 0.02000 0.02020 Nac 0.42790 0.14810 -0.00270 0.87000 0.02060 CaNac 0.42790 0.14810 -0.00270 0.13000 0.02060 Nad -0.43150 -0.35150 -0.49520 0.98000 0.02280 CaNac -0.43150 -0.35150 -0.49520 0.02000 0.02280 Bea 0.11090 0.13130 0.28030 0.97000 0.00780 SiBea 0.11090 0.13130 0.28030 0.03000 0.00780 Beb -0.10950 -0.36860 0.21970 0.94000 ? SiBeb -0.10950 -0.36860 0.21970 0.06000 ? Bec 0.39050 -0.13100 -0.21990 0.98000 0.00630 SiBec 0.39050 -0.13100 -0.21990 0.02000 0.00630 Bed -0.39160 0.36920 -0.28030 0.96000 0.00760 SiBed -0.39160 0.36920 -0.28030 0.04000 0.00760 Si1a -0.25830 0.01310 -0.25080 1.00000 0.00630 Si1b 0.25750 -0.48700 -0.24920 1.00000 0.00630 Si1c -0.24150 -0.01250 0.24900 1.00000 0.00650 Si1d 0.24190 0.48730 0.25030 1.00000 0.00670 Si2a 0.10770 0.15040 -0.22560 1.00000 0.00630 Si2b -0.10860 -0.34920 -0.27410 0.94000 0.00510 BeSi2b -0.10860 -0.34920 -0.27410 0.06000 0.00510 Si2c 0.39220 -0.14990 0.27370 0.97000 0.00540 BeSi2c 0.39220 -0.14990 0.27370 0.03000 0.00540 Si2d -0.39180 0.35020 0.22580 0.94000 0.00570 BeSi2d -0.39180 0.35020 0.22580 0.06000 0.00570 O1a 0.24200 0.00630 -0.16100 1.00000 0.00940 O1b -0.24310 -0.49340 -0.33930 1.00000 0.00990 O1c 0.25810 -0.00510 0.33870 1.00000 0.00910 O1d -0.25810 0.49500 0.16060 1.00000 0.00930 O2a 0.10310 0.15940 -0.38440 1.00000 0.01040 O2b -0.10310 -0.34100 -0.11560 1.00000 0.00980 O2c 0.39480 -0.15820 0.11480 1.00000 0.00980 O2d -0.39360 0.34190 0.38450 1.00000 0.00990 O3a -0.16380 -0.15080 -0.33940 1.00000 0.00980 O3b 0.16310 0.34880 -0.16060 1.00000 ? O3c 0.66410 0.15150 0.16090 1.00000 0.00960 O3d 0.33600 -0.34880 0.33850 1.00000 0.00990 O4a -0.16200 -0.16920 0.15310 1.00000 0.01050 O4b 0.16220 0.33080 0.34620 1.00000 0.00990 O4c -0.33570 0.17030 -0.34680 1.00000 0.00970 O4d 0.33550 -0.33010 -0.15360 1.00000 0.00940 O5a -0.08810 0.07420 0.34350 1.00000 0.00960 O5b 0.08860 -0.42580 0.15630 1.00000 0.00930 O5c -0.41210 -0.07320 -0.15760 1.00000 0.00920 O5d 0.41100 0.42630 -0.34280 1.00000 0.00940 O6a -0.09180 0.10100 -0.16050 1.00000 ? O6b 0.09090 -0.39930 -0.33930 1.00000 ? O6c -0.40710 -0.10240 0.33830 1.00000 0.00980 O6d 0.40790 0.39770 0.16090 1.00000 0.01040 Fa 0.10330 0.12820 0.12240 0.94000 0.01440 OFa 0.10330 0.12820 0.12240 0.06000 0.01440 Fb -0.10200 -0.37160 0.37750 0.79000 0.01310 OFb -0.10200 -0.37160 0.37750 0.21000 0.01310 Fc 0.39570 -0.12940 -0.37710 0.87000 0.01310 OFc 0.39570 -0.12940 -0.37710 0.13000 0.01310 Fd -0.39710 0.37110 -0.12280 0.86000 0.01360 OFd -0.39710 0.37110 -0.12280 0.14000 0.01360