data_global
_chemical_name_mineral 'Phlogopite'
loop_
_publ_author_name
'Hendricks S B'
'Jefferson M E'
_journal_name_full 'American Mineralogist'
_journal_volume 24
_journal_year 1939
_journal_page_first 729
_journal_page_last 771
_publ_section_title
;
 Polymorphism of the micas with optical measurements
 Note: Biotite group
;
_database_code_amcsd 24
_chemical_formula_sum 'K Mg3 (Si3 Al) O11 (F H)'
_cell_length_a 5.32
_cell_length_b 9.21
_cell_length_c 10.16
_cell_angle_alpha 90.0
_cell_angle_beta 100.03
_cell_angle_gamma 90.0
_cell_volume 490.203
_exptl_crystal_density_diffrn  2.84
_symmetry_space_group_name_H-M 'C 1 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'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
K   0.45  0.5  0.84  1.0
Mg1   0.44  0.33  0.34  1.0
Mg2   0.44  0.0  0.34  1.0
Si1   0.02  0.33  0.06  0.75
Si2   0.37  0.17  0.62  0.75
Al1   0.02  0.33  0.06  0.25
Al2   0.37  0.17  0.62  0.25
O1   0.25  0.25  0.0  1.0
O2   0.08  0.33  0.22  1.0
O3   0.32  0.17  0.46  1.0
O4   0.14  0.25  0.68  1.0
O5   0.0  0.5  0.0  1.0
O6   0.39  0.0  0.68  1.0
O-H1   0.08  0.0  0.22  0.5
O-H2   0.32  0.5  0.46  0.5
F1   0.08  0.0  0.22  0.5
F2   0.32  0.5  0.46  0.5