data_global
_chemical_name_mineral 'Muscovite-2M1'
loop_
_publ_author_name
'Brigatti M F'
'Frigieri P'
'Poppi L'
_journal_name_full 'American Mineralogist'
_journal_volume 83 
_journal_year 1998
_journal_page_first 775
_journal_page_last 785
_publ_section_title
;
 Crystal chemistry of Mg-, Fe-bearing muscovites-2M1
 Sample B1b from peraluminous granites at Northern Victoria Land, Antarctica
;
_database_code_amcsd 0002020
_chemical_formula_sum '(K.94 Na.06) Si3.08 Al2.75 Ti.06 Fe.06 Mg.08 H.28 O11.96 F.04'
_cell_length_a 5.187
_cell_length_b 9.004
_cell_length_c 20.036
_cell_angle_alpha 90
_cell_angle_beta 95.73
_cell_angle_gamma 90
_cell_volume 931.081
_exptl_crystal_density_diffrn      2.849
_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
K   0.00000   0.09854   0.25000   0.94000
Na   0.00000   0.09854   0.25000   0.06000
Si1   0.45172   0.25839   0.13550   0.77000
Al1   0.45172   0.25839   0.13550   0.23000
Si2   0.96512   0.42959   0.13547   0.77000
Al2   0.96512   0.42959   0.13547   0.23000
Ti2   0.24870   0.08287   0.00003   0.03000
Fe2   0.24870   0.08287   0.00003   0.03000
Mg2   0.24870   0.08287   0.00003   0.04000
Al2   0.24870   0.08287   0.00003   0.90000
Al1   0.75000   0.25000   0.00000   0.03000
H   0.87300   0.14700   0.06000   0.14000
O11   0.74900   0.31210   0.15786   1.00000
O21   0.24890   0.36920   0.16888   1.00000
O22   0.41930   0.09310   0.16832   1.00000
O31   0.38460   0.25170   0.05348   1.00000
O32   0.96130   0.44360   0.05350   1.00000
O4   0.95770   0.06180   0.05033   0.98000
F4   0.95770   0.06180   0.05033   0.02000
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
K 0.02388 0.02292 0.02074 0.00000 0.00198 0.00000
Na 0.02388 0.02292 0.02074 0.00000 0.00198 0.00000
Si1 0.00702 0.00616 0.00765 0.00021 0.00047 0.00000
Al1 0.00702 0.00616 0.00765 0.00021 0.00047 0.00000
Si2 0.00742 0.00604 0.00765 0.00000 0.00109 0.00055
Al2 0.00742 0.00604 0.00765 0.00000 0.00109 0.00055
Ti2 0.00796 0.00694 0.00866 0.00007 0.00089 0.00055
Fe2 0.00796 0.00694 0.00866 0.00007 0.00089 0.00055
Mg2 0.00796 0.00694 0.00866 0.00007 0.00089 0.00055
Al2 0.00796 0.00694 0.00866 0.00007 0.00089 0.00055
O11 0.01457 0.01930 0.01349 -0.00424 -0.00016 0.00464
O21 0.01430 0.01643 0.01148 0.00400 0.00073 -0.00173
O22 0.02092 0.01109 0.01188 0.00141 0.00328 0.00018
O31 0.01134 0.00863 0.00966 0.00000 0.00120 0.00091
O32 0.00958 0.01027 0.00966 0.00094 0.00099 0.00082
O4 0.01107 0.01068 0.01168 -0.00141 0.00302 -0.00264
F4 0.01107 0.01068 0.01168 -0.00141 0.00302 -0.00264