data_9000074
_chemical_name 'Phlogopite'
loop_
_publ_author_name
'Pabst A'
_journal_name_full "American Mineralogist"
_journal_volume 40
_journal_year 1955
_journal_page_first 967
_journal_page_last 974
_publ_section_title
;
 Redescription of the single layer structure of the micas
;
_chemical_formula_sum 'K Mg3 (Si3 Al) O12 H1.36'
_cell_length_a 5.32
_cell_length_b 9.21
_cell_length_c 10.16
_cell_angle_alpha 90
_cell_angle_beta 100.03
_cell_angle_gamma 90
_cell_volume 490.203
_symmetry_space_group_name_H-M 'C 1 2/m 1'
loop_
_symmetry_equiv_pos_as_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
K   0.00000   0.50000   0.00000   1.00000
Mg1   0.00000   0.00000   0.50000   1.00000
Mg2   0.00000   0.33000   0.50000   1.00000
Si   0.57500   0.33000   0.22000   0.75000
Al   0.57500   0.33000   0.22000   0.25000
O1   0.05500   0.00000   0.16000   1.00000
O2   0.80500   0.25000   0.16000   1.00000
O3   0.63000   0.33000   0.38000   1.00000
O-H   0.63000   0.00000   0.38000   1.00000