data_global _chemical_name_mineral 'Phlogopite-2O' loop_ _publ_author_name 'Ferraris G' 'Gula A' 'Ivaldi G' 'Nespolo M' 'Sokolova E' 'Uvarova Y' 'Khomyakov A P' _journal_name_full 'European Journal of Mineralogy' _journal_volume 13 _journal_year 2001 _journal_page_first 1013 _journal_page_last 1023 _publ_section_title ; First structure determination of an MDO-2O mica polytype associated with a 1M polytype ; _database_code_amcsd 0006910 _chemical_formula_sum '(K.97 Na.03) (Mg2 Fe.33 Li.67) (Si3.4 Al.6) O11.2 F.8 H1.2' _cell_length_a 5.2781 _cell_length_b 9.141 _cell_length_c 20.124 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 970.925 _exptl_crystal_density_diffrn 2.857 _symmetry_space_group_name_H-M 'C c m m' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,z' '-x,y,1/2+z' '1/2-x,1/2+y,1/2+z' 'x,-y,1/2-z' '1/2+x,1/2-y,1/2-z' 'x,-y,z' '1/2+x,1/2-y,z' '-x,y,-z' '1/2-x,1/2+y,-z' 'x,y,1/2-z' '1/2+x,1/2+y,1/2-z' '-x,-y,1/2+z' '1/2-x,1/2-y,1/2+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 K 0.66620 0.00000 0.25000 0.97000 0.03260 Na 0.66620 0.00000 0.25000 0.03000 0.03260 MgM1 0.00000 0.00000 0.00000 0.68000 0.01050 FeM1 0.00000 0.00000 0.00000 0.11000 0.01050 LiM1 0.00000 0.00000 0.00000 0.21000 0.01050 MgM2 0.00000 0.66627 0.00000 0.66000 0.01060 FeM2 0.00000 0.66627 0.00000 0.11000 0.01060 LiM2 0.00000 0.66627 0.00000 0.23000 0.01060 SiT 0.16620 0.16668 0.13564 0.85000 0.00860 AlT 0.16620 0.16668 0.13564 0.15000 0.00860 O1 0.15500 0.00000 0.16637 1.00000 0.01810 O2 0.42150 0.24480 0.16636 1.00000 0.01820 O3 0.16600 0.16670 0.05551 1.00000 0.01150 O-h 0.66810 0.00000 0.05185 0.60000 0.01310 F 0.66810 0.00000 0.05185 0.40000 0.01310 H 0.65500 0.00000 0.08800 0.60000 0.03000