data_global
_chemical_name_mineral 'Zincowoodwardite-3R'
loop_
_publ_author_name
'Witzke T'
'Raade G'
_journal_name_full 'Neues Jahrbuch fur Mineralogie, Monatshefte'
_journal_volume 2000 
_journal_year 2000
_journal_page_first 455
_journal_page_last 465
_publ_section_title
;
 Zincowoodwardite, [Zn1-x Alx(OH)2][(SO4)x/2(H2O)n], a new mineral of the hydrotalcite group
;
_database_code_amcsd 0014908
_chemical_compound_source 'Hilarion mine, Kamariza, near Laurion, Greece'
_chemical_formula_sum '(Zn.625 Al.375) S.188 O2.692 H2.376'
_cell_length_a 3.065
_cell_length_b 3.065
_cell_length_c 25.42
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 206.808
_exptl_crystal_density_diffrn      2.469
_symmetry_space_group_name_H-M 'R -3 m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '2/3+x,1/3+y,1/3+z'
  '1/3+x,2/3+y,2/3+z'
  'x,x-y,z'
  '2/3+x,1/3+x-y,1/3+z'
  '1/3+x,2/3+x-y,2/3+z'
  'y,x,-z'
  '2/3+y,1/3+x,1/3-z'
  '1/3+y,2/3+x,2/3-z'
  '-x+y,y,z'
  '2/3-x+y,1/3+y,1/3+z'
  '1/3-x+y,2/3+y,2/3+z'
  '-x,-x+y,-z'
  '2/3-x,1/3-x+y,1/3-z'
  '1/3-x,2/3-x+y,2/3-z'
  '-y,-x,z'
  '2/3-y,1/3-x,1/3+z'
  '1/3-y,2/3-x,2/3+z'
  'x-y,-y,-z'
  '2/3+x-y,1/3-y,1/3-z'
  '1/3+x-y,2/3-y,2/3-z'
  'y,-x+y,-z'
  '2/3+y,1/3-x+y,1/3-z'
  '1/3+y,2/3-x+y,2/3-z'
  '-x+y,-x,z'
  '2/3-x+y,1/3-x,1/3+z'
  '1/3-x+y,2/3-x,2/3+z'
  '-x,-y,-z'
  '2/3-x,1/3-y,1/3-z'
  '1/3-x,2/3-y,2/3-z'
  '-y,x-y,z'
  '2/3-y,1/3+x-y,1/3+z'
  '1/3-y,2/3+x-y,2/3+z'
  'x-y,x,-z'
  '2/3+x-y,1/3+x,1/3-z'
  '1/3+x-y,2/3+x,2/3-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Zn   0.00000   0.00000   0.00000   0.62500
Al   0.00000   0.00000   0.00000   0.37500
S1   0.00000   0.00000   0.16580   0.04700
S2   0.00000   0.00000   0.16730   0.04700
O-H1   0.00000   0.00000   0.36600   1.00000
O2a   0.06500  -0.06500   0.48100   0.04200
O2b  -0.06500   0.06500   0.48100   0.04200
Wat3a   0.00000   0.00000   0.10690   0.04700
Wat3b   0.00000   0.00000   0.22620   0.04700