data_global _chemical_name_mineral 'Albite' loop_ _publ_author_name 'Meneghinello E' 'Alberti A' 'Cruciani G' _journal_name_full 'American Mineralogist' _journal_volume 84 _journal_year 1999 _journal_page_first 1144 _journal_page_last 1151 _publ_section_title ; Order-disorder process in the tetrahedral sites af albite Sample: untreated ; _database_code_amcsd 0002264 _chemical_compound_source 'Stintino, Sardinia, Italy' _chemical_formula_sum 'Na.996 Ca.01 K.004 Al Si3 O8' _cell_length_a 8.133 _cell_length_b 12.773 _cell_length_c 7.159 _cell_angle_alpha 94.23 _cell_angle_beta 116.64 _cell_angle_gamma 87.72 _cell_volume 662.918 _exptl_crystal_density_diffrn 2.632 _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 Na 0.26810 0.98880 0.14620 0.99600 Ca 0.26810 0.98880 0.14620 0.01000 K 0.26810 0.98880 0.14620 0.00400 Allo 0.00900 0.16840 0.20850 0.96000 Silo 0.00900 0.16840 0.20850 0.04000 Silm 0.00390 0.82050 0.23730 0.97000 Allm 0.00390 0.82050 0.23730 0.03000 Si2o 0.69170 0.11030 0.31500 1.00000 Si2m 0.68150 0.88180 0.36080 0.99000 Al2m 0.68150 0.88180 0.36080 0.01000 OA1 0.00450 0.13100 0.96630 1.00000 OA2 0.59120 0.99730 0.28050 1.00000 OBo 0.81260 0.10950 0.19070 1.00000 OBm 0.82010 0.85090 0.25910 1.00000 OCo 0.01310 0.30210 0.26980 1.00000 OCm 0.02390 0.69370 0.22880 1.00000 ODo 0.20740 0.10910 0.38910 1.00000 ODm 0.18320 0.86780 0.43650 1.00000 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 Na 0.01520 0.04760 0.03200 -0.00530 0.00930 -0.02190 Ca 0.01520 0.04760 0.03200 -0.00530 0.00930 -0.02190 K 0.01520 0.04760 0.03200 -0.00530 0.00930 -0.02190 Allo 0.00890 0.00800 0.00700 -0.00130 0.00420 0.00050 Silo 0.00890 0.00800 0.00700 -0.00130 0.00420 0.00050 Silm 0.00800 0.00730 0.00630 0.00100 0.00380 0.00110 Allm 0.00800 0.00730 0.00630 0.00100 0.00380 0.00110 Si2o 0.00780 0.00610 0.00830 -0.00080 0.00340 0.00060 Si2m 0.00710 0.00630 0.00840 0.00050 0.00380 0.00130 Al2m 0.00710 0.00630 0.00840 0.00050 0.00380 0.00130 OA1 0.01960 0.01200 0.00790 0.00010 0.00830 0.00140 OA2 0.00770 0.00660 0.01120 0.00000 0.00340 0.00180 OBo 0.01260 0.01420 0.01740 -0.00370 0.01050 -0.00110 OBm 0.01470 0.01600 0.02430 0.00480 0.01390 0.00370 OCo 0.01130 0.00860 0.01540 -0.00200 0.00630 -0.00100 OCm 0.01220 0.00810 0.01450 0.00230 0.00510 0.00250 ODo 0.01280 0.01320 0.00810 0.00120 0.00230 0.00180 ODm 0.01410 0.01360 0.00950 -0.00250 0.00000 -0.00040