data_global
_chemical_name_mineral 'Muscovite'
loop_
_publ_author_name
'Gueven N'
'Burnham C'
_journal_name_full 'Zeitschrift fur Kristallographie'
_journal_volume 65 
_journal_year 1966
_journal_page_first 290
_journal_page_last 293
_publ_section_title
;
 The Crystal Structure of 3T Muscovite
 _cod_database_code 1101031
;
_database_code_amcsd 0018279
_chemical_formula_sum 'K Al3 Si3 O12'
_cell_length_a 5.1963
_cell_length_b 5.1963
_cell_length_c 29.970
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 700.819
_exptl_crystal_density_diffrn      2.817
_symmetry_space_group_name_H-M 'P 31 1 2'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x+y,y,1/3-z'
  '-y,x-y,1/3+z'
  '-y,-x,2/3-z'
  '-x+y,-x,2/3+z'
  'x,x-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
K1   0.13300  -0.13300   0.83330   1.00000
Al1  -0.23000   0.23000   0.33333   1.00000
Al2   0.10100  -0.10100   0.33333   1.00000
Al3   0.79400   0.20400  -0.08970   0.50000
Si1   0.79400   0.20400  -0.08970   0.50000
Si2   0.46700   0.54800  -0.08970   1.00000
O1   0.74500   0.16667  -0.03660   1.00000
O2   0.52300   0.57500  -0.03580   1.00000
O3   0.67100   0.85900  -0.11060   1.00000
O4   0.13900   0.45800  -0.10700   1.00000
O5   0.57400   0.31500  -0.11010   1.00000
O6   0.12800  -0.06700  -0.03450   1.00000