data_global
_chemical_name_mineral 'Muscovite'
loop_
_publ_author_name
'Radoslovich E'
_journal_name_full 'Acta Crystallographica'
_journal_volume 13 
_journal_year 1960
_journal_page_first 919
_journal_page_last 932
_publ_section_title
;
 The Structure of Muscovite, K Al2 (Si3 Al) O10 (O H)2
 _cod_database_code 1100012
;
_database_code_amcsd 0018220
_chemical_formula_sum 'Al3 O12 Si3 K'
_cell_length_a 5.189
_cell_length_b 8.996
_cell_length_c 20.095990000
_cell_angle_alpha 90
_cell_angle_beta 95.18
_cell_angle_gamma 90
_cell_volume 934.255
_exptl_crystal_density_diffrn      2.817
_symmetry_space_group_name_H-M 'C 1 2/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,1/2-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
Al1   0.24840   0.08710   0.00160   1.00000
O1   0.46500   0.94500   0.05270   1.00000
O2   0.42500   0.26000   0.05420   1.00000
O3   0.45300   0.55800   0.05200   1.00000
O4   0.40800   0.09600   0.16800   1.00000
O5   0.24500   0.80200   0.16200   1.00000
O6   0.26290   0.37130   0.16740   1.00000
Si1   0.46250   0.92420   0.13720   0.50000
Si2   0.45930   0.25500   0.13650   1.00000
Al2   0.46250   0.92420   0.13720   0.50000
K1   0.00000   0.10160   0.25000   1.00000