data_global _chemical_name_mineral 'Sanidine' loop_ _publ_author_name 'Marsii I M' 'Organova N I' 'Rozhdestvenskaya I V' _journal_name_full 'Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva' _journal_volume 2 _journal_year 1993 _journal_page_first 85 _journal_page_last 89 _publ_section_title ; Verification of the crystalline structure for sanidines ; _database_code_amcsd 0020569 _chemical_compound_source 'Mongolia' _chemical_formula_sum '(K.41 Na.56 Ca.03) (Al1.002 Si2.998) O8' _cell_length_a 8.360 _cell_length_b 12.997 _cell_length_c 7.162 _cell_angle_alpha 90 _cell_angle_beta 116.17 _cell_angle_gamma 90 _cell_volume 698.414 _exptl_crystal_density_diffrn 2.561 _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 K1 0.27690 0.00000 0.13580 0.41000 0.04597 Na1 0.27690 0.00000 0.13580 0.56000 0.04597 Ca1 0.27690 0.00000 0.13580 0.03000 0.04597 Al1 0.00800 0.18020 0.22350 0.28600 0.01722 Si1 0.00800 0.18020 0.22350 0.71400 0.01722 Al2 0.69810 0.11660 0.34130 0.21500 0.02102 Si2 0.69810 0.11660 0.34130 0.78500 0.02102 O1 0.00000 0.14110 0.00000 1.00000 0.02394 O2 0.61130 0.00000 0.28430 1.00000 0.02761 O3 0.82410 0.13880 0.22610 1.00000 0.02888 O4 0.02710 0.30580 0.26300 1.00000 0.02318 O5 0.18650 0.12470 0.40540 1.00000 0.02457