data_global _chemical_name_mineral 'Rubicline' loop_ _publ_author_name 'Kyono A' 'Kimata M' _journal_name_full 'Mineralogical Magazine' _journal_volume 65 _journal_year 2001 _journal_page_first 523 _journal_page_last 531 _publ_section_title ; Refinement of the crystal structure of a synthetic non-stoichiometric Rb-feldspar ; _database_code_amcsd 14559 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Rb.811 Al1.062 Si3 O8' _cell_length_a 8.839 _cell_length_b 13.035 _cell_length_c 7.175 _cell_angle_alpha 90.0 _cell_angle_beta 116.11 _cell_angle_gamma 90.0 _cell_volume 742.316 _exptl_crystal_density_diffrn 2.776 _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 Rb 0.296 0.0 0.146 0.811 0.0454 Al 0.296 0.0 0.146 0.062 0.0454 SiT1 0.0106 0.1913 0.2223 0.755 0.0474 AlT2 0.0106 0.1913 0.2223 0.245 0.0474 SiT2 0.7235 0.1194 0.3446 0.745 0.0492 AlT2 0.7235 0.1194 0.3446 0.255 0.0494 OA1 0.0 0.1557 0.0 1.0 0.063 OA2 0.6662 0.0 0.2834 1.0 0.049 OB 0.8311 0.1597 0.2245 1.0 0.0645 OC 0.0444 0.313 0.2585 1.0 0.0646 OD 0.1692 0.1292 0.4026 1.0 0.056 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 Rb 0.0356 0.0641 0.0396 0.0 0.0193 0.0 Al 0.0356 0.0641 0.0396 0.0 0.0193 0.0 SiT1 0.0451 0.0544 0.0478 -0.0026 0.025 -0.0008 AlT2 0.0451 0.0544 0.0478 -0.0026 0.025 -0.0008 SiT2 0.048 0.0565 0.0505 -0.0016 0.0285 0.003 AlT2 0.048 0.0565 0.0505 -0.0016 0.0285 0.003 OA1 0.05 0.0745 0.0652 0.0 0.0262 0.0 OA2 0.0611 0.0585 0.0388 0.0 0.0324 0.0 OB 0.0455 0.0907 0.0595 0.0002 0.0252 -0.0036 OC 0.0827 0.0772 0.0413 0.0107 0.0341 -0.0004 OD 0.0617 0.0538 0.0671 0.0012 0.0416 0.0002