data_global _chemical_name_mineral 'Annite' loop_ _publ_author_name 'Brigatti M F' 'Frigieri P' 'Ghezzo c' 'Poppi L' _journal_name_full 'American Mineralogist' _journal_volume 85 _journal_year 2000 _journal_page_first 436 _journal_page_last 448 _publ_section_title ; Crystal chemistry of Al-rich biotites coexisting with muscovites in peraluminous granites Sample: C6c ; _database_code_amcsd 0002391 _chemical_compound_source 'Tinker Glacier, Northern Victoria Land, Antarctica' _chemical_formula_sum '(K.98 Na.02) Fe1.4 Mg.71 Ti.16 Al1.88 Si2.72 O12 H1.64' _cell_length_a 5.335 _cell_length_b 9.242 _cell_length_c 20.181 _cell_angle_alpha 90 _cell_angle_beta 95.20 _cell_angle_gamma 90 _cell_volume 990.951 _exptl_crystal_density_diffrn 3.101 _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 KA 0.00000 0.08520 0.25000 0.98000 NaA 0.00000 0.08520 0.25000 0.02000 Fe2+1 0.75000 0.25000 0.00000 0.66000 Mg1 0.75000 0.25000 0.00000 0.19000 Fe2+2 0.25010 0.08323 0.02000 0.37000 Mg2 0.25010 0.08323 0.02000 0.26000 Ti2 0.25010 0.08323 0.02000 0.08000 Al2 0.25010 0.08323 0.02000 0.30000 SiT1 0.46140 0.25084 0.13691 0.68000 AlT1 0.46140 0.25084 0.13691 0.32000 SiT2 0.96280 0.41783 0.13689 0.68000 AlT2 0.96280 0.41783 0.13689 0.32000 O11 0.74240 0.31470 0.16450 1.00000 O21 0.24170 0.35460 0.16560 1.00000 O22 0.43270 0.08460 0.16571 1.00000 O31 0.42950 0.24320 0.05410 1.00000 O32 0.93730 0.41250 0.05407 1.00000 O-H4 0.93640 0.07390 0.05117 0.82000 O4 0.93640 0.07390 0.05117 0.18000 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 0.02670 0.00790 0.00182 0.00000 0.00046 0.00000 NaA 0.02670 0.00790 0.00182 0.00000 0.00046 0.00000 Fe2+1 0.00780 0.00213 0.00071 -0.00060 0.00025 -0.00007 Mg1 0.00780 0.00213 0.00071 -0.00060 0.00025 -0.00007 Fe2+2 0.00800 0.00212 0.00069 -0.00010 0.00010 0.00010 Mg2 0.00800 0.00212 0.00069 -0.00010 0.00010 0.00010 Ti2 0.00800 0.00212 0.00069 -0.00010 0.00010 0.00010 Al2 0.00800 0.00212 0.00069 -0.00010 0.00010 0.00010 SiT1 0.00910 0.00220 0.00061 0.00020 0.00012 -0.00001 AlT1 0.00910 0.00220 0.00061 0.00020 0.00012 -0.00001 SiT2 0.00810 0.00236 0.00065 -0.00030 0.00018 0.00002 AlT2 0.00810 0.00236 0.00065 -0.00030 0.00018 0.00002 O11 0.01580 0.00580 0.00096 -0.00300 0.00000 0.00032 O21 0.01530 0.00640 0.00094 0.00230 0.00000 -0.00034 O22 0.02260 0.00310 0.00091 -0.00030 0.00070 0.00000 O31 0.01320 0.00370 0.00073 -0.00040 0.00000 -0.00011 O32 0.01530 0.00400 0.00069 0.00110 0.00000 -0.00015 O-H4 0.01740 0.00270 0.00075 0.00170 0.00020 -0.00050 O4 0.01740 0.00270 0.00075 0.00170 0.00020 -0.00050