data_global _chemical_name_mineral 'Albite' loop_ _publ_author_name 'Prewitt C T' 'Sueno S' 'Papike J J' _journal_name_full 'American Mineralogist' _journal_volume 61 _journal_year 1976 _journal_page_first 1213 _journal_page_last 1225 _publ_section_title ; The crystal structures of high albite and monalbite at high temperatures T = 1105 deg C feldspar ; _database_code_amcsd 0000542 _chemical_compound_source 'Synthetic' _chemical_formula_sum '(Na.983 Ca.012 K.005) (Si3 Al) O8' _cell_length_a 8.2783 _cell_length_b 12.9592 _cell_length_c 7.1452 _cell_angle_alpha 90.056 _cell_angle_beta 116.087 _cell_angle_gamma 89.997 _cell_volume 688.448 _exptl_crystal_density_diffrn 2.533 _symmetry_space_group_name_H-M 'C -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' 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 Na 0.27970 0.00000 0.13820 0.98300 0.15945 Ca 0.27970 0.00000 0.13820 0.01200 0.15945 K 0.27970 0.00000 0.13820 0.00500 0.15945 Si1o 0.00810 0.17830 0.22300 0.75000 0.03166 Al1o 0.00810 0.17830 0.22300 0.25000 0.03166 Si1m 0.00800 0.82140 0.22330 0.75000 0.03204 Al1m 0.00800 0.82140 0.22330 0.25000 0.03204 Si2o 0.69630 0.11600 0.34200 0.75000 0.03179 Al2o 0.69630 0.11600 0.34200 0.25000 0.03179 Si2m 0.69640 0.88380 0.34260 0.75000 0.03166 Al2m 0.69640 0.88380 0.34260 0.25000 0.03166 Oa1 0.00020 0.13900 0.99950 1.00000 0.05598 Oa2 0.60720 0.99990 0.28500 1.00000 0.04344 Obo 0.82380 0.13450 0.22420 1.00000 0.06725 Obm 0.82390 0.86540 0.22520 1.00000 0.06776 Oco 0.02660 0.30410 0.25340 1.00000 0.05839 Ocm 0.02640 0.69570 0.25250 1.00000 0.05826 Odo 0.18820 0.12360 0.40500 1.00000 0.05725 Odm 0.18750 0.87610 0.40560 1.00000 0.05687