data_global _chemical_name_mineral 'Microcline' loop_ _publ_author_name 'Griffen D T' 'Johnson B T' _journal_name_full 'American Mineralogist' _journal_volume 69 _journal_year 1984 _journal_page_first 1072 _journal_page_last 1077 _publ_section_title ; Strain in triclinic alkali feldspars: a crystal structure study intermediate ; _database_code_amcsd 0000962 _chemical_formula_sum '(Al Si3) (K.89 Na.11) O8' _cell_length_a 8.552 _cell_length_b 12.975 _cell_length_c 7.205 _cell_angle_alpha 90.09 _cell_angle_beta 115.92 _cell_angle_gamma 89.51 _cell_volume 719.031 _exptl_crystal_density_diffrn 2.555 _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 Al(1o) 0.00960 0.18500 0.22290 0.54000 Si(1o) 0.00960 0.18500 0.22290 0.46000 Si(1m) 0.00930 0.81650 0.22600 0.68000 Al(1m) 0.00930 0.81650 0.22600 0.32000 Si(2o) 0.70860 0.11830 0.34340 0.93000 Al(2o) 0.70860 0.11830 0.34340 0.07000 Si(2m) 0.70740 0.88290 0.34590 0.93000 Al(2m) 0.70740 0.88290 0.34590 0.07000 K 0.28380 0.99850 0.13660 0.89000 Na 0.28380 0.99850 0.13660 0.11000 O(A1) 0.99990 0.14420 0.99590 1.00000 O(A2) 0.63520 0.00120 0.28510 1.00000 O(Bo) 0.82550 0.14530 0.22630 1.00000 O(Bm) 0.82730 0.85520 0.23010 1.00000 O(Co) 0.03440 0.31290 0.25790 1.00000 O(Cm) 0.03530 0.69020 0.26160 1.00000 O(Do) 0.18420 0.12510 0.40640 1.00000 O(Dm) 0.18090 0.87410 0.40770 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 Al(1o) 0.02200 0.01490 0.01350 -0.00320 0.00830 -0.00150 Si(1o) 0.02200 0.01490 0.01350 -0.00320 0.00830 -0.00150 Si(1m) 0.02110 0.01390 0.01310 0.00180 0.00830 0.00180 Al(1m) 0.02110 0.01390 0.01310 0.00180 0.00830 0.00180 Si(2o) 0.01910 0.01050 0.01270 -0.00050 0.00680 0.00030 Al(2o) 0.01910 0.01050 0.01270 -0.00050 0.00680 0.00030 Si(2m) 0.01910 0.01050 0.01310 -0.00090 0.00680 0.00000 Al(2m) 0.01910 0.01050 0.01310 -0.00090 0.00680 0.00000 K 0.01890 0.02540 0.02140 0.00000 0.00580 -0.00010 Na 0.01890 0.02540 0.02140 0.00000 0.00580 -0.00010 O(A1) 0.03250 0.01760 0.02310 0.00040 0.01280 0.00070 O(A2) 0.02850 0.01300 0.02140 -0.00080 0.00480 0.00030 O(Bo) 0.02950 0.03230 0.02640 -0.00360 0.01820 0.00140 O(Bm) 0.03030 0.03220 0.02880 0.00360 0.01860 0.00010 O(Co) 0.02480 0.01850 0.02290 -0.00320 0.00880 -0.00320 O(Cm) 0.02520 0.01980 0.02300 0.00270 0.00990 0.00440 O(Do) 0.02910 0.02070 0.01260 0.00040 0.00420 0.00140 O(Dm) 0.02830 0.02000 0.01310 -0.00200 0.00370 -0.00110