data_global _chemical_name_mineral 'Phlogopite' loop_ _publ_author_name 'Laurora A' 'Brigatti M F' 'Mottana A' 'Malferrari D' 'Caprilli E' _journal_name_full 'American Mineralogist' _journal_volume 92 _journal_year 2007 _journal_page_first 468 _journal_page_last 480 _publ_section_title ; Crystal chemistry of trioctahedral micas in alkaline and subalkaline volcanic rocks: A case study from Mt. Sassetto (Tolfa district, Latium, central Italy) Sample: MS1 Note: 2M_1 polytype ; _database_code_amcsd 0004291 _chemical_compound_source 'Mt. Sassetto, Tolfa district, Latium, Italy' _chemical_formula_sum '(K.93 Na.07) (Mg1.5 Fe1.11 Ti.39) (Al1.2 Si2.8) O12' _cell_length_a 5.3332 _cell_length_b 9.2376 _cell_length_c 20.069 _cell_angle_alpha 90 _cell_angle_beta 95.125 _cell_angle_gamma 90 _cell_volume 984.766 _exptl_crystal_density_diffrn 3.090 _symmetry_space_group_name_H-M 'C 1 2/c 1' 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' 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 KA 0.00000 0.08420 0.25000 0.93000 0.03500 NaA 0.00000 0.08420 0.25000 0.07000 0.03500 MgM1 0.75000 0.25000 0.00000 0.50000 0.01200 Fe2+M1 0.75000 0.25000 0.00000 0.37000 0.01200 TiM1 0.75000 0.25000 0.00000 0.13000 0.01200 MgM2 0.24040 0.08010 0.00000 0.50000 0.01400 Fe2+M2 0.24040 0.08010 0.00000 0.37000 0.01400 TiM2 0.24040 0.08010 0.00000 0.13000 0.01400 AlT1 0.46190 0.25010 0.13810 0.30000 0.01000 SiT1 0.46190 0.25010 0.13810 0.70000 0.01000 AlT2 0.96370 0.41740 0.13800 0.30000 0.01000 SiT2 0.96370 0.41740 0.13800 0.70000 0.01000 O11 0.73710 0.31920 0.16600 1.00000 0.02200 O21 0.23690 0.34830 0.16710 1.00000 0.02200 O22 0.44360 0.08370 0.16700 1.00000 0.02300 O31 0.43020 0.24950 0.05460 1.00000 0.01400 O32 0.93820 0.41880 0.05470 1.00000 0.01400 O41 0.93430 0.08250 0.05040 1.00000 0.01400 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 KA 0.03200 0.03200 0.04100 0.00000 0.00300 0.00000 NaA 0.03200 0.03200 0.04100 0.00000 0.00300 0.00000 MgM1 0.01000 0.00900 0.01800 0.00100 0.00300 -0.00200 Fe2+M1 0.01000 0.00900 0.01800 0.00100 0.00300 -0.00200 TiM1 0.01000 0.00900 0.01800 0.00100 0.00300 -0.00200 MgM2 0.01500 0.01100 0.01700 0.00400 0.00200 0.00000 Fe2+M2 0.01500 0.01100 0.01700 0.00400 0.00200 0.00000 TiM2 0.01500 0.01100 0.01700 0.00400 0.00200 0.00000 AlT1 0.01000 0.00800 0.01200 0.00100 0.00100 0.00000 SiT1 0.01000 0.00800 0.01200 0.00100 0.00100 0.00000 AlT2 0.00900 0.00800 0.01200 0.00100 0.00200 0.00000 SiT2 0.00900 0.00800 0.01200 0.00100 0.00200 0.00000 O11 0.02000 0.02800 0.01900 -0.00700 -0.00100 0.00100 O21 0.02000 0.02700 0.01900 0.00600 -0.00100 -0.00200 O22 0.03200 0.01700 0.01900 0.00100 0.00400 0.00100 O31 0.01500 0.01300 0.01500 0.00100 0.00100 0.00000 O32 0.01300 0.01400 0.01500 0.00200 0.00200 0.00100 O41 0.01300 0.01000 0.01800 0.00300 0.00100 0.00100