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: sd12no.10
;
_database_code_amcsd 0002393
_chemical_formula_sum 'Si2.84 Al2.13 Fe1.94 K.9 O12'
_cell_length_a 5.3944
_cell_length_b 9.3454
_cell_length_c 10.3284
_cell_angle_alpha 90
_cell_angle_beta 100.22
_cell_angle_gamma 90
_cell_volume 512.423
_exptl_crystal_density_diffrn      3.064
_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   0.57140   0.16680   0.22580   0.71000   0.10892
AlT   0.57140   0.16680   0.22580   0.28000   0.03293
Al1   0.00000   0.50000   0.50000   0.95000   0.03420
Fe1   0.00000   0.50000   0.50000   0.04000   0.11019
Al2   0.00000   0.83330   0.50000   0.03000   0.08828
Fe2   0.00000   0.83330   0.50000   0.95000   0.11361
K   0.00000   0.00000   0.00000   0.90000   1.19052
O1   0.80850   0.24660   0.17440   1.00000   0.03166
O2   0.54170   0.00000   0.17220   1.00000   0.01140
O3   0.63650   0.16650   0.39400   1.00000   0.01140
O4   0.13230   0.00000   0.38770   1.00000   0.01773