data_global _chemical_name_mineral 'Annite' loop_ _publ_author_name 'Redhammer G J' 'Beran A' 'Schneider J' 'Amthauer G' 'Lottermoser W' _journal_name_full 'American Mineralogist' _journal_volume 85 _journal_year 2000 _journal_page_first 449 _journal_page_last 465 _publ_section_title ; Spectroscopic and structural properties of synthetic micas on the annite-siderophyllite binary: Synthesis, crystal structure refinement, Mossbauer, and infrared spectroscopy Sample: G-117 ; _database_code_amcsd 0002399 _chemical_formula_sum 'Si2.552 Al3.448 Fe3 (K.99 Na.01) O12' _cell_length_a 5.377 _cell_length_b 9.308 _cell_length_c 10.283 _cell_angle_alpha 90 _cell_angle_beta 100.22 _cell_angle_gamma 90 _cell_volume 506.489 _exptl_crystal_density_diffrn 3.693 _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 SiT 0.57540 0.16681 0.22579 0.63800 0.01254 AlT 0.57540 0.16681 0.22579 0.11200 0.01254 Al1 0.00000 0.50000 0.50000 1.00000 0.01102 Fe1 0.00000 0.50000 0.50000 1.00000 0.01102 Al2 0.00000 0.83196 0.50000 1.00000 0.01127 Fe2 0.00000 0.83196 0.50000 1.00000 0.01127 K 0.00000 0.00000 0.00000 0.99000 0.03610 Na 0.00000 0.00000 0.00000 0.01000 0.03610 O1 0.82600 0.22980 0.16950 1.00000 0.02546 O2 0.51580 0.00000 0.17060 1.00000 0.02444 O3 0.63190 0.16790 0.39180 1.00000 0.01824 O4 0.12710 0.00000 0.39630 1.00000 0.02039