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: A44
;
_database_code_amcsd 0002392
_chemical_formula_sum '(Si3 Al) Fe3 K.956 O12'
_cell_length_a 5.3899
_cell_length_b 9.3367
_cell_length_c 10.3086
_cell_angle_alpha 90
_cell_angle_beta 100.16
_cell_angle_gamma 90
_cell_volume 510.634
_exptl_crystal_density_diffrn      3.305
_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   0.57460   0.16640   0.22540   0.75000   0.01355
AlT   0.57460   0.16640   0.22540   0.25000   0.01355
Fe1   0.00000   0.50000   0.50000   1.00000   0.01140
Fe2   0.00000   0.83330   0.50000   1.00000   0.02026
K   0.00000   0.00000   0.00000   0.95600   0.04813
O1   0.81380   0.24100   0.17770   1.00000   0.04053
O2   0.54570   0.00000   0.16760   1.00000   0.03040
O3   0.63730   0.16750   0.39390   1.00000   0.01900
O4   0.13670   0.00000   0.38600   1.00000   0.02406