data_global _chemical_name_mineral 'Sanidine' loop_ _publ_author_name 'Weitz G' _journal_name_full 'Zeitschrift fur Kristallographie' _journal_volume 136 _journal_year 1972 _journal_page_first 418 _journal_page_last 426 _publ_section_title ; Die struktur des saninins bei verschiedenen ordnungsgraden Note: after heating ; _database_code_amcsd 0010741 _chemical_compound_source 'Volkesfeld, Eifel' _chemical_formula_sum 'K (Al Si3) O8' _cell_length_a 8.546 _cell_length_b 13.037 _cell_length_c 7.178 _cell_angle_alpha 90 _cell_angle_beta 115.97 _cell_angle_gamma 90 _cell_volume 718.977 _exptl_crystal_density_diffrn 2.571 _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 0.28360 0.00000 0.13670 1.00000 Al1 0.00940 0.18430 0.22370 0.25000 Si1 0.00940 0.18430 0.22370 0.75000 Al2 0.70710 0.11780 0.34430 0.25000 Si2 0.70710 0.11780 0.34430 0.75000 OA1 0.00000 0.14680 0.00000 1.00000 OA2 0.63180 0.00000 0.28420 1.00000 OB 0.82890 0.14470 0.22700 1.00000 OC 0.03350 0.30880 0.25850 1.00000 OD 0.18150 0.12650 0.40440 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 0.02452 0.02497 0.02447 0.00000 0.01080 0.00000 Al1 0.00927 0.00775 0.00633 0.00051 0.00352 -0.00170 Si1 0.00927 0.00775 0.00633 0.00051 0.00352 -0.00170 Al2 0.00837 0.00517 0.00844 0.00000 0.00327 -0.00043 Si2 0.00837 0.00517 0.00844 0.00000 0.00327 -0.00043 OA1 0.03290 0.03100 0.02004 0.00000 0.01457 0.00000 OA2 0.02691 0.01980 0.02827 0.00000 0.00352 0.00000 OB 0.02721 0.03875 0.03059 0.00101 0.01733 -0.00384 OC 0.02303 0.02411 0.02806 -0.00406 0.01055 -0.00213 OD 0.02572 0.02755 0.01667 0.00152 0.00427 0.00128