data_global _chemical_name_mineral 'Richterite' loop_ _publ_author_name 'Oberti R' 'Ungaretti L' 'Cannillo E' 'Hawthorne F C' _journal_name_full 'European Journal of Mineralogy' _journal_volume 4 _journal_year 1992 _journal_page_first 425 _journal_page_last 439 _publ_section_title ; The behaviour of Ti in amphiboles: I. Four- and six-coordinate Ti in richterite Sample: R(5) Potassium-fluor-richterite ; _database_code_amcsd 0006441 _chemical_formula_sum 'O23.336 (F.664 Na1.173) K.772 Ti.708 Fe.583 Mg3.889 Mn.01 Ca.966 Si7.73 Al.08 H1.336' _cell_length_a 9.948 _cell_length_b 18.025 _cell_length_c 5.281 _cell_angle_alpha 90 _cell_angle_beta 104.72 _cell_angle_gamma 90 _cell_volume 915.871 _exptl_crystal_density_diffrn 3.133 _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 O1 0.11120 0.08620 0.22030 1.00000 0.00722 O2 0.11750 0.16860 0.72400 1.00000 0.00849 O-H3 0.10410 0.00000 0.71190 0.66800 0.01165 F 0.10410 0.00000 0.71190 0.33200 0.01165 O4 0.36060 0.24860 0.79860 1.00000 0.01267 O5 0.34530 0.12950 0.09400 1.00000 0.01102 O6 0.34300 0.11850 0.59070 1.00000 0.01077 O7 0.33530 0.00000 0.30500 1.00000 0.01064 NaA 0.00000 0.50000 0.00000 0.09000 0.02913 KA 0.00000 0.50000 0.00000 0.38600 0.02913 NaAm 0.03690 0.50000 0.07900 0.02250 0.02166 KAm 0.03690 0.50000 0.07900 0.09650 0.02166 NaA2 0.00000 0.46700 0.00000 0.02250 0.03179 KA2 0.00000 0.46700 0.00000 0.09650 0.03179 TiM1 0.00000 0.08360 0.50000 0.10360 0.01064 FeM1 0.00000 0.08360 0.50000 0.11660 0.01064 MgM1 0.00000 0.08360 0.50000 0.77780 0.01064 MnM1 0.00000 0.08360 0.50000 0.00200 0.01064 TiM2 0.00000 0.17960 0.00000 0.10360 0.00773 FeM2 0.00000 0.17960 0.00000 0.11660 0.00773 MgM2 0.00000 0.17960 0.00000 0.77780 0.00773 MnM2 0.00000 0.17960 0.00000 0.00200 0.00773 TiM3 0.00000 0.00000 0.00000 0.10360 0.00722 FeM3 0.00000 0.00000 0.00000 0.11660 0.00722 MgM3 0.00000 0.00000 0.00000 0.77780 0.00722 MnM3 0.00000 0.00000 0.00000 0.00200 0.00722 CaM4 0.00000 0.27660 0.50000 0.24150 0.01241 NaM4 0.00000 0.27660 0.50000 0.24830 0.01241 CaM42 0.00000 0.25590 0.50000 0.24150 0.00697 NaM42 0.00000 0.25590 0.50000 0.24830 0.00697 SiT1 0.27800 0.08490 0.30020 0.96630 0.00608 AlT1 0.27800 0.08490 0.30020 0.01000 0.00608 TiT1 0.27800 0.08490 0.30020 0.02380 0.00608 SiT2 0.28550 0.17140 0.80460 0.96630 0.00621 AlT2 0.28550 0.17140 0.80460 0.01000 0.00621 TiT2 0.28550 0.17140 0.80460 0.02380 0.00621