data_9004344
_chemical_name 'Tusionite'
loop_
_publ_author_name
'Cooper M A'
'Hawthorne F C'
'Novak M'
_journal_name_full "The Canadian Mineralogist"
_journal_volume 32
_journal_year 1994
_journal_page_first 903
_journal_page_last 907
_publ_section_title
;
 The crystal structure of tusionite, MnSn(BO3)2,
 a dolomite-structure borate
;
_chemical_formula_sum 'Mn Sn B2 O6'
_cell_length_a 4.781
_cell_length_b 4.781
_cell_length_c 15.381
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 304.476
_symmetry_space_group_name_H-M 'R -3'
loop_
_symmetry_equiv_pos_as_xyz
  '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'
  '-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
Mn   0.00000   0.00000   0.00000
Sn   0.00000   0.00000   0.50000
B   0.00000   0.00000   0.24440
O   0.28000  -0.01550   0.24530