data_global _chemical_name_mineral 'Richterite' loop_ _publ_author_name 'Oberti R' 'Hawthorne F C' 'Ungaretti L' 'Cannillo E' _journal_name_full 'European Journal of Mineralogy' _journal_volume 5 _journal_year 1993 _journal_page_first 43 _journal_page_last 51 _publ_section_title ; The behaviour of Mn in amphiboles: Mn in richerite Sample: MR(1) ; _database_code_amcsd 0006464 _chemical_formula_sum 'Na1.574 K.21 Mg4.22 Fe.24 Al.16 Mn.802 Ca.764 Si7.92 H1.67 O23.67 F.33' _cell_length_a 9.891 _cell_length_b 18.018 _cell_length_c 5.276 _cell_angle_alpha 90 _cell_angle_beta 104.15 _cell_angle_gamma 90 _cell_volume 911.739 _exptl_crystal_density_diffrn 3.090 _symmetry_space_group_name_H-M 'C 1 2/m 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,z' 'x,-y,z' '1/2+x,1/2-y,z' '-x,y,-z' '1/2-x,1/2+y,-z' '-x,-y,-z' '1/2-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 NaA2/m 0.00000 0.50000 0.00000 0.13600 0.04534 KA2/m 0.00000 0.50000 0.00000 0.04200 0.04534 NaAm 0.03680 0.50000 0.08760 0.13600 0.04471 KAm 0.03680 0.50000 0.08760 0.04200 0.04471 NaA2 0.00000 0.46460 0.00000 0.13600 0.02609 KA2 0.00000 0.46460 0.00000 0.04200 0.02609 MgM1 0.00000 0.08880 0.50000 0.95000 0.00735 FeM1 0.00000 0.08880 0.50000 0.05000 0.00735 MgM2 0.00000 0.18000 0.00000 0.67000 0.00773 AlM2 0.00000 0.18000 0.00000 0.04000 0.00773 MnM2 0.00000 0.18000 0.00000 0.23000 0.00773 FeM2 0.00000 0.18000 0.00000 0.06000 0.00773 MgM3 0.00000 0.00000 0.00000 0.98000 0.00697 FeM3 0.00000 0.00000 0.00000 0.02000 0.00697 NaM4 0.00000 0.27420 0.50000 0.22360 0.01646 CaM4 0.00000 0.27420 0.50000 0.19090 0.01646 MnM4 0.00000 0.27420 0.50000 0.08540 0.01646 NaM4* 0.00000 0.25090 0.50000 0.22360 0.00405 CaM4* 0.00000 0.25090 0.50000 0.19090 0.00405 MnM4* 0.00000 0.25090 0.50000 0.08540 0.00405 SiT1 0.27890 0.08470 0.29320 0.99000 0.00621 AlT1 0.27890 0.08470 0.29320 0.01000 0.00621 SiT2 0.28770 0.17090 0.79920 0.99000 0.00633 AlT2 0.28770 0.17090 0.79920 0.01000 0.00633 H 0.19380 0.00000 0.78070 0.83500 0.01710 O1 0.11200 0.08570 0.21700 1.00000 0.00735 O2 0.11980 0.17010 0.72490 1.00000 0.00836 O3 0.10720 0.00000 0.71360 0.83500 0.00975 F 0.10720 0.00000 0.71360 0.16500 0.00975 O4 0.36390 0.24760 0.78970 1.00000 0.01279 O5 0.34650 0.13070 0.08850 1.00000 0.01127 O6 0.34250 0.11610 0.58760 1.00000 0.01165 O7 0.33790 0.00000 0.28540 1.00000 0.01279