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: MS4 Note: 2M_1 polytype ; _database_code_amcsd 0004293 _chemical_compound_source 'Mt. Sassetto, Tolfa district, Latium, Italy' _chemical_formula_sum 'K.89 Na.07 (Mg1.5 Fe1.11 Ti.39) (Al1.12 Si2.88) O12' _cell_length_a 5.3368 _cell_length_b 9.2377 _cell_length_c 20.086 _cell_angle_alpha 90 _cell_angle_beta 95.128 _cell_angle_gamma 90 _cell_volume 986.272 _exptl_crystal_density_diffrn 3.075 _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 0.89000 0.03600 NaA 0.00000 0.08420 0.25000 0.07000 0.03600 MgM1 0.75000 0.25000 0.00000 0.50000 0.01400 Fe2+M1 0.75000 0.25000 0.00000 0.37000 0.01400 TiM1 0.75000 0.25000 0.00000 0.13000 0.01400 MgM2 0.24000 0.08000 0.00000 0.50000 0.01500 Fe2+M2 0.24000 0.08000 0.00000 0.37000 0.01500 TiM2 0.24000 0.08000 0.00000 0.13000 0.01500 AlT1 0.46200 0.25030 0.13800 0.28000 0.01000 SiT1 0.46200 0.25030 0.13800 0.72000 0.01000 AlT2 0.96390 0.41750 0.13800 0.28000 0.01000 SiT2 0.96390 0.41750 0.13800 0.72000 0.01000 O11 0.73700 0.31900 0.16610 1.00000 0.02100 O21 0.23660 0.34790 0.16710 1.00000 0.02100 O22 0.44470 0.08330 0.16720 1.00000 0.02100 O31 0.43010 0.24990 0.05460 1.00000 0.01300 O32 0.93840 0.41920 0.05490 1.00000 0.01300 O41 0.93420 0.08280 0.05010 1.00000 0.01300 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 0.03300 0.03300 0.04000 0.00000 0.00400 0.00000 NaA 0.03300 0.03300 0.04000 0.00000 0.00400 0.00000 MgM1 0.01200 0.01100 0.01800 0.00200 0.00200 0.00100 Fe2+M1 0.01200 0.01100 0.01800 0.00200 0.00200 0.00100 TiM1 0.01200 0.01100 0.01800 0.00200 0.00200 0.00100 MgM2 0.01700 0.01200 0.01600 0.00600 0.00200 0.00200 Fe2+M2 0.01700 0.01200 0.01600 0.00600 0.00200 0.00200 TiM2 0.01700 0.01200 0.01600 0.00600 0.00200 0.00200 AlT1 0.01000 0.00900 0.01200 0.00000 0.00100 0.00000 SiT1 0.01000 0.00900 0.01200 0.00000 0.00100 0.00000 AlT2 0.00900 0.00900 0.01200 0.00100 0.00100 0.00000 SiT2 0.00900 0.00900 0.01200 0.00100 0.00100 0.00000 O11 0.01900 0.02700 0.01600 -0.00600 0.00100 0.00200 O21 0.02000 0.02600 0.01700 0.00600 0.00100 -0.00100 O22 0.03000 0.01600 0.01800 -0.00100 0.00500 0.00000 O31 0.01500 0.01300 0.01200 0.00100 0.00200 0.00300 O32 0.01300 0.01400 0.01200 0.00200 0.00200 0.00300 O41 0.01400 0.01200 0.01300 0.00400 0.00200 0.00300