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: sd37no.10 ; _database_code_amcsd 0002394 _chemical_formula_sum 'Si2.64 Al1.64 Fe2.68 K.96 O12' _cell_length_a 5.3812 _cell_length_b 9.3234 _cell_length_c 10.2934 _cell_angle_alpha 90 _cell_angle_beta 100.22 _cell_angle_gamma 90 _cell_volume 508.237 _exptl_crystal_density_diffrn 3.252 _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 0.57240 0.16670 0.22600 0.66000 0.07308 AlT 0.57240 0.16670 0.22600 0.33000 0.07308 Al1 0.00000 0.50000 0.50000 0.10000 0.00887 Fe1 0.00000 0.50000 0.50000 0.90000 0.00887 Al2 0.00000 0.83230 0.50000 0.11000 0.06295 Fe2 0.00000 0.83230 0.50000 0.89000 0.01229 K 0.00000 0.00000 0.00000 0.96000 0.54207 O1 0.82010 0.23080 0.17580 1.00000 0.02913 O2 0.52770 0.00000 0.17000 1.00000 0.01520 O3 0.63680 0.16780 0.39330 1.00000 0.01520 O4 0.13290 0.00000 0.39090 1.00000 0.01393