data_9001516
_chemical_name 'Tengerite-(Y)'
loop_
_publ_author_name
'Miyawaki R'
'Kuriyama J'
'Nakai I'
_journal_name_full "American Mineralogist"
_journal_volume 78
_journal_year 1993
_journal_page_first 425
_journal_page_last 432
_publ_section_title
;
 The redefinition of tengerite-(Y), Y2(CO3)3.2-3H2O, and its crystal structure
;
_chemical_formula_sum 'Y2 C3 O11 H2'
_cell_length_a 6.078
_cell_length_b 9.157
_cell_length_c 15.114
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 841.188
_symmetry_space_group_name_H-M 'B b 21 m'
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '1/2+x,y,1/2+z'
  '-x,1/2+y,z'
  '1/2-x,1/2+y,1/2+z'
  'x,y,-z'
  '1/2+x,y,1/2-z'
  '-x,1/2+y,-z'
  '1/2-x,1/2+y,1/2-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_Uiso_or_equiv
Y   0.49840   0.00000   0.34223 ?
C1   0.25600   0.25700   0.19570   0.00887
C2   0.27600   0.06400   0.50000 ?
O1   0.33200   0.12900   0.22010   0.00950
O2   0.10680   0.25300   0.13430   0.01039
O3   0.31100   0.37500   0.22920   0.01001
O4   0.47300   0.01200   0.50000   0.01494
O5   0.18600   0.09700   0.42100 ?
O-H   0.18300   0.41400   0.41100   0.02888