data_9009619
_chemical_name 'Hendricksite'
loop_
_publ_author_name
'Robert J L'
'Gasperin M'
_journal_name_full "Tschermaks Mineralogische und Petrographische Mitteilungen"
_journal_volume 34
_journal_year 1985
_journal_page_first 1
_journal_page_last 14
_publ_section_title
;
 Crystal structure refinement of hendricksite, a Zn- and Mn-rich trioctahedral
 potassium mica: a contribution to the crystal chemistry of zinc-bearing mineral
 Locality: Franklin Furnace, New Jersey, USA
 Note: polytype 1M
;
_chemical_formula_sum '(K.89 Na.1 Ba.01) Mg1.572 Zn.54 Mn.4 Fe.252 Ti.072 Al1.13
_cell_length_a 5.340
_cell_length_b 9.254
_cell_length_c 10.235
_cell_angle_alpha 90
_cell_angle_beta 100.07
_cell_angle_gamma 90
_cell_volume 497.985
_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
_atom_site_Uiso_or_equiv
KA   0.00000   0.00000   0.00000   0.89000   0.03040
NaA   0.00000   0.00000   0.00000   0.10000   0.00380
BaA   0.00000   0.00000   0.00000   0.01000   0.00380
Mg1   0.00000   0.50000   0.50000   0.52400   0.00380
Zn1   0.00000   0.50000   0.50000   0.18000   0.00380
Mn1   0.00000   0.50000   0.50000   0.13340   0.00380
Fe1   0.00000   0.50000   0.50000   0.08400   0.00380
Ti1   0.00000   0.50000   0.50000   0.02400   0.00380
Al1   0.00000   0.50000   0.50000   0.01920   0.00380
Cr1   0.00000   0.50000   0.50000   0.00200   0.00380
Mg2   0.00000   0.83170   0.50000   0.52400   0.00380
Zn2   0.00000   0.83170   0.50000   0.18000   0.00380
Mn2   0.00000   0.83170   0.50000   0.13340   0.00380
Fe2   0.00000   0.83170   0.50000   0.08400   0.00380
Ti2   0.00000   0.83170   0.50000   0.02400   0.00380
Al2   0.00000   0.83170   0.50000   0.01920   0.00380
Cr2   0.00000   0.83170   0.50000   0.00200   0.00380
Si   0.57500   0.16680   0.22520   0.73000   0.00760
Al   0.57500   0.16680   0.22520   0.27000   0.00760
O1   0.82420   0.23310   0.16740   1.00000   0.02026
O2   0.52110   0.00000   0.16710   1.00000   0.02153
O3   0.63130   0.16630   0.38980   1.00000   0.00887
O-H   0.12970   0.00000   0.39490   1.00000   0.00887