data_global _chemical_name_mineral 'Phlogopite' loop_ _publ_author_name 'Ventruti G' 'Zema M' 'Scordari F' 'Pedrazzi G' _journal_name_full 'American Mineralogist' _journal_volume 93 _journal_year 2008 _journal_page_first 632 _journal_page_last 643 _publ_section_title ; Thermal behavior of a Ti-rich phlogopite from Mt. Vulture (Potenza, Italy): An in situ X-ray single-crystal diffraction study Sample: T = 873 K, after 14 h from previous measurement at same temperature ; _database_code_amcsd 0004554 _chemical_compound_source 'trioctahedral mica, Cava St. Antonia, Mt. Vulture, Potenza, Italy' _chemical_formula_sum 'K (Mg2.215 Fe.785) Si2.695 Al1.225 O12' _cell_length_a 5.3560 _cell_length_b 9.2798 _cell_length_c 10.2863 _cell_angle_alpha 90 _cell_angle_beta 100.051 _cell_angle_gamma 90 _cell_volume 503.410 _exptl_crystal_density_diffrn 2.886 _symmetry_space_group_name_H-M 'C 1 2/m 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' '-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 _atom_site_U_iso_or_equiv K 0.00000 0.50000 0.00000 1.02770 0.07700 MgM1 0.00000 0.00000 0.50000 0.73950 0.02280 FeM1 0.00000 0.00000 0.50000 0.26050 0.02280 MgM2 0.00000 0.33750 0.50000 0.73790 0.02140 FeM2 0.00000 0.33750 0.50000 0.26210 0.02140 Si 0.07600 0.16700 0.22720 0.67380 0.01950 Al 0.07600 0.16700 0.22720 0.30630 0.01950 O1 0.31680 0.24000 0.16960 1.00000 0.03800 O2 0.03800 0.00000 0.17100 1.00000 0.03900 O3 0.13080 0.16860 0.39000 1.00000 0.02300 O4 0.13300 0.50000 0.39950 1.00000 0.02800