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 0014559 _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 _cell_angle_beta 116.11 _cell_angle_gamma 90 _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 0.29600 0.00000 0.14600 0.81100 0.04540 Al 0.29600 0.00000 0.14600 0.06200 0.04540 SiT1 0.01060 0.19130 0.22230 0.75500 0.04740 AlT2 0.01060 0.19130 0.22230 0.24500 0.04740 SiT2 0.72350 0.11940 0.34460 0.74500 0.04920 AlT2 0.72350 0.11940 0.34460 0.25500 0.04940 OA1 0.00000 0.15570 0.00000 1.00000 0.06300 OA2 0.66620 0.00000 0.28340 1.00000 0.04900 OB 0.83110 0.15970 0.22450 1.00000 0.06450 OC 0.04440 0.31300 0.25850 1.00000 0.06460 OD 0.16920 0.12920 0.40260 1.00000 0.05600 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 0.03560 0.06410 0.03960 0.00000 0.01930 0.00000 Al 0.03560 0.06410 0.03960 0.00000 0.01930 0.00000 SiT1 0.04510 0.05440 0.04780 -0.00260 0.02500 -0.00080 AlT2 0.04510 0.05440 0.04780 -0.00260 0.02500 -0.00080 SiT2 0.04800 0.05650 0.05050 -0.00160 0.02850 0.00300 AlT2 0.04800 0.05650 0.05050 -0.00160 0.02850 0.00300 OA1 0.05000 0.07450 0.06520 0.00000 0.02620 0.00000 OA2 0.06110 0.05850 0.03880 0.00000 0.03240 0.00000 OB 0.04550 0.09070 0.05950 0.00020 0.02520 -0.00360 OC 0.08270 0.07720 0.04130 0.01070 0.03410 -0.00040 OD 0.06170 0.05380 0.06710 0.00120 0.04160 0.00020