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: sd87no.10
;
_database_code_amcsd 0002398
_chemical_formula_sum 'Si2.28 Al2.52 Fe2.312 K.92 O12'
_cell_length_a 5.3582
_cell_length_b 9.2819
_cell_length_c 10.2688
_cell_angle_alpha 90
_cell_angle_beta 100.39
_cell_angle_gamma 90
_cell_volume 502.337
_exptl_crystal_density_diffrn      3.234
_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   0.57410   0.16730   0.22710   0.57000   0.00925
AlT   0.57410   0.16730   0.22710   0.43000   0.00925
Al1   0.00000   0.50000   0.50000   0.13200   0.00887
Fe1   0.00000   0.50000   0.50000   0.86800   0.00887
Al2   0.00000   0.83270   0.50000   0.33400   0.01267
Fe2   0.00000   0.83270   0.50000   0.72200   0.01267
K   0.00000   0.00000   0.00000   0.92000   0.02533
O1   0.83430   0.21900   0.17660   1.00000   0.02533
O2   0.50200   0.00000   0.17480   1.00000   0.02786
O3   0.63850   0.17000   0.39580   1.00000   0.02406
O4   0.12890   0.00000   0.39280   1.00000   0.01773