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 = 24 deg C feldspar ; _database_code_amcsd 0000536 _chemical_compound_source 'Synthetic' _chemical_formula_sum '(Na.983 Ca.012 K.005) (Si3 Al) O8' _cell_length_a 8.1535 _cell_length_b 12.8694 _cell_length_c 7.1070 _cell_angle_alpha 93.521 _cell_angle_beta 116.458 _cell_angle_gamma 90.257 _cell_volume 665.950 _exptl_crystal_density_diffrn 2.618 _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 0.27370 0.00730 0.13290 0.98300 0.09651 Ca 0.27370 0.00730 0.13290 0.01200 0.09651 K 0.27370 0.00730 0.13290 0.00500 0.09651 Si1o 0.00900 0.16500 0.21480 0.75000 0.00988 Al1o 0.00900 0.16500 0.21480 0.25000 0.00988 Si1m 0.00480 0.81450 0.22900 0.75000 0.00988 Al1m 0.00480 0.81450 0.22900 0.25000 0.00988 Si2o 0.69020 0.10790 0.32020 0.75000 0.01039 Al2o 0.69020 0.10790 0.32020 0.25000 0.01039 Si2m 0.68490 0.87760 0.35350 0.75000 0.01001 Al2m 0.68490 0.87760 0.35350 0.25000 0.01001 Oa1 0.00550 0.13510 0.98450 1.00000 0.02052 Oa2 0.59160 0.99070 0.27830 1.00000 0.01672 Obo 0.82120 0.10840 0.19900 1.00000 0.02090 Obm 0.81840 0.84700 0.24550 1.00000 0.02394 Oco 0.01620 0.29020 0.27700 1.00000 0.01836 Ocm 0.02130 0.68730 0.21800 1.00000 0.01887 Odo 0.19590 0.11230 0.38760 1.00000 0.01824 Odm 0.18850 0.86750 0.42660 1.00000 0.02052