data_global _chemical_name_mineral 'Sanidine' loop_ _publ_author_name 'Kimata M' 'Saito S' 'Shimizu M' 'Iida I' 'Matsui T' _journal_name_full 'Neues Jahrbuch fur Mineralogie, Abhandlungen' _journal_volume 171 _journal_year 1996 _journal_page_first 199 _journal_page_last 213 _publ_section_title ; Low-temperature structures of orthoclase and sanidine Note: T = 121 K ; _database_code_amcsd 0020560 _chemical_compound_source 'Volkesfeld, Eifel, Germany' _chemical_formula_sum 'K (Si3 Al) O8' _cell_length_a 8.514 _cell_length_b 13.018 _cell_length_c 7.183 _cell_angle_alpha 90 _cell_angle_beta 116.03 _cell_angle_gamma 90 _cell_volume 715.374 _exptl_crystal_density_diffrn 2.584 _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 K 0.28200 0.00000 0.13590 1.00000 0.01816 SiT1 0.00910 0.18370 0.22370 0.69200 0.00741 AlT1 0.00910 0.18370 0.22370 0.30800 0.00741 SiT2 0.70560 0.11750 0.34400 0.80800 0.00676 AlT2 0.70560 0.11750 0.34400 0.19200 0.00676 Oa1 0.00000 0.14550 0.00000 1.00000 0.01444 Oa2 0.63010 0.00000 0.28590 1.00000 0.01557 Ob 0.82730 0.14370 0.22670 1.00000 0.01611 Oc 0.03140 0.30920 0.25600 1.00000 0.01239 Od 0.18300 0.12610 0.40550 1.00000 0.01234