data_global _chemical_name_mineral 'Lepidolite-1M' loop_ _publ_author_name 'Guggenheim S' _journal_name_full 'American Mineralogist' _journal_volume 66 _journal_year 1981 _journal_page_first 1221 _journal_page_last 1232 _publ_section_title ; Cation ordering in lepidolite type 1M from Radkovice ; _database_code_amcsd 0000851 _chemical_formula_sum 'K Li1.56 Al1.808 Si3.492 O10 F2' _cell_length_a 5.209 _cell_length_b 9.011 _cell_length_c 10.149 _cell_angle_alpha 90 _cell_angle_beta 100.77 _cell_angle_gamma 90 _cell_volume 467.986 _exptl_crystal_density_diffrn 2.802 _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 K 0.00000 0.50000 0.00000 1.00000 Li1 0.00000 0.00000 0.50000 1.00000 Al2 0.00000 0.32890 0.50000 0.65000 Li2 0.00000 0.32890 0.50000 0.28000 Si 0.08100 0.16860 0.23203 0.87300 Al 0.08100 0.16860 0.23203 0.12700 O1 0.02180 0.00000 0.17500 1.00000 O2 0.32520 0.23190 0.16800 1.00000 O3 0.14180 0.17680 0.39450 1.00000 F 0.10760 0.50000 0.40170 1.00000 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 K 0.02521 0.02448 0.02614 0.00000 0.00388 0.00000 Li1 0.02521 0.02057 0.02619 0.00000 0.00853 0.00000 Al2 0.00822 0.00950 0.01073 0.00000 0.00129 0.00000 Li2 0.00822 0.00950 0.01073 0.00000 0.00129 0.00000 Si 0.00862 0.00860 0.01113 -0.00028 0.00150 -0.00005 Al 0.00862 0.00860 0.01113 -0.00028 0.00150 -0.00005 O1 0.02640 0.01193 0.01561 0.00000 -0.00026 0.00000 O2 0.01499 0.02304 0.01914 -0.00654 0.00414 -0.00137 O3 0.02255 0.01522 0.01123 -0.00280 0.00103 -0.00046 F 0.01658 0.05800 0.01511 0.00000 0.00284 0.00000