data_9009703
_chemical_name 'Sainfeldite'
loop_
_publ_author_name
'Ferraris G'
'Abbona F'
_journal_name_full "Bulletin de la Societe Francaise de Mineralogie et de Crista
_journal_volume 95
_journal_year 1972
_journal_page_first 33
_journal_page_last 41
_publ_section_title
;
 The crystal structure of Ca5(HAsO4)2(AsO4)2*4H2O (Sainfeldite)
 Locality: synthetic
;
_chemical_formula_sum 'Ca5 As4 O20 H10'
_cell_length_a 18.781
_cell_length_b 9.820
_cell_length_c 10.191
_cell_angle_alpha 90
_cell_angle_beta 97.02
_cell_angle_gamma 90
_cell_volume 1865.430
_symmetry_space_group_name_H-M 'C 1 2/c 1'
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,1/2+z'
  '1/2+x,1/2-y,1/2+z'
  '-x,y,1/2-z'
  '1/2-x,1/2+y,1/2-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_Uiso_or_equiv
Ca1   0.50000   0.39531   0.75000 ?
Ca2   0.32106   0.08094   0.18553 ?
Ca3   0.32375   0.46774   0.14044 ?
As1   0.41471   0.31962   0.41581 ?
As2   0.65932   0.24002   0.62295 ?
O2   0.42500   0.43130   0.29700 ?
O3   0.33880   0.23240   0.36570 ?
O4   0.41280   0.39400   0.56350 ?
O5   0.66240   0.25830   0.45910 ?
O6   0.70290   0.09560   0.67400 ?
O7   0.70170   0.37470   0.70090 ?
O8   0.57260   0.23390   0.65230 ?
O-h1   0.48290   0.20070   0.43050 ?
Ow1   0.23830   0.41150   0.47250 ?
Ow2   0.57080   0.02070   0.83950 ?
H1   0.51500   0.23000   0.50000   0.03040
H2   0.25800   0.35800   0.43800   0.01773
H3   0.21200   0.35800   0.52000   0.02660
H4   0.56400   0.11000   0.78000   0.09119
H5   0.53200  -0.03000   0.82000   0.07092