data_global _chemical_name_mineral 'Microcline' loop_ _publ_author_name 'Blasi A' 'De Pol Blasi C' 'Zanazzi P F' _journal_name_full 'The Canadian Mineralogist' _journal_volume 25 _journal_year 1987 _journal_page_first 527 _journal_page_last 537 _publ_section_title ; A re-examination of the Pellotsalo microcline: Mineralogical implications and genetic considerations ; _database_code_amcsd 0005216 _chemical_formula_sum '(K.95 Na.05) Al Si3 O8' _cell_length_a 8.5714 _cell_length_b 12.9646 _cell_length_c 7.2217 _cell_angle_alpha 90.6 _cell_angle_beta 115.9 _cell_angle_gamma 87.7 _cell_volume 721.300 _exptl_crystal_density_diffrn 2.556 _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 K 0.28260 0.99280 0.13670 0.95000 Na 0.28260 0.99280 0.13670 0.05000 Al 0.01000 0.18770 0.21700 1.00000 Si1 0.00980 0.81960 0.23230 1.00000 Si2 0.71110 0.12040 0.34010 1.00000 Si3 0.70570 0.88560 0.35050 1.00000 O1 0.00070 0.14480 0.98290 1.00000 O2 0.63650 0.00550 0.28570 1.00000 O3 0.82120 0.14770 0.21990 1.00000 O4 0.83190 0.85730 0.24010 1.00000 O5 0.03530 0.32000 0.25110 1.00000 O6 0.03810 0.69550 0.27020 1.00000 O7 0.19030 0.12290 0.40550 1.00000 O8 0.17540 0.87450 0.41180 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 K 0.01450 0.02280 0.02360 0.00050 0.00700 0.00000 Na 0.01450 0.02280 0.02360 0.00050 0.00700 0.00000 Al 0.00920 0.00770 0.00770 -0.00190 0.00400 0.00080 Si1 0.00920 0.00780 0.00660 0.00070 0.00450 0.00070 Si2 0.00840 0.00560 0.00830 -0.00110 0.00420 0.00080 Si3 0.00770 0.00660 0.00860 -0.00020 0.00400 0.00090 O1 0.01800 0.01340 0.00850 -0.00080 0.00700 0.00220 O2 0.01060 0.00580 0.01310 0.00060 0.00360 0.00080 O3 0.01390 0.01900 0.01870 -0.00480 0.01050 0.00020 O4 0.01470 0.02030 0.01790 0.00450 0.01100 0.00170 O5 0.01100 0.01050 0.01450 -0.00340 0.00510 0.00000 O6 0.01220 0.00980 0.01400 0.00180 0.00790 0.00230 O7 0.01620 0.01340 0.00930 0.00190 0.00320 0.00310 O8 0.01570 0.01570 0.00930 -0.00470 0.00150 0.00080