data_global
_chemical_name_mineral 'Strunzite'
loop_
_publ_author_name
'Fanfani L'
'Tomassini M'
'Zanazzi P F'
'Zanzari A R'
_journal_name_full 'Tschermaks Mineralogische und Petrographische Mitteilungen'
_journal_volume 25 
_journal_year 1978
_journal_page_first 77
_journal_page_last 87
_publ_section_title
;
 The crystal structure of strunzite, a contribution to the
 crystal chemistry of basic ferric-manganous hydrated phosphates
;
_database_code_amcsd 0015670
_chemical_compound_source 'Big Chief mine, Glendale, South Dakota'
_chemical_formula_sum 'Mn Fe2 P2 O16 H14'
_cell_length_a 10.228
_cell_length_b 9.837
_cell_length_c 7.284
_cell_angle_alpha 90.17
_cell_angle_beta 98.44
_cell_angle_gamma 117.44
_cell_volume 641.284
_exptl_crystal_density_diffrn      2.583
_symmetry_space_group_name_H-M 'P -1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Mn   0.50370   0.33380   0.24450   0.01178
Fe1  -0.03070   0.24350   0.13730   0.01241
Fe2   0.02600  -0.22900   0.36300   0.01317
P1  -0.18640   0.46640   0.06070   0.01051
P2   0.19170   0.15310   0.43420   0.00849
O1  -0.34810   0.42560   0.06670   0.03166
O2  -0.17580   0.31910   0.03120   0.01900
O3  -0.08530  -0.44450   0.24580   0.01393
O4  -0.14070  -0.43160  -0.10440   0.01900
O5   0.10000   0.15080   0.24540   0.01393
O6   0.15080  -0.01330   0.47830   0.01520
O7   0.35490   0.24300   0.42510   0.02660
O8   0.16060   0.22890   0.59450   0.01520
O-H1  -0.04080   0.30840   0.39260   0.01393
O-H2   0.03470  -0.15240   0.11150   0.01773
Wat1   0.31380   0.25110   0.00970   0.01773
Wat2   0.31220  -0.43510   0.51710   0.02280
Wat3   0.48930  -0.45200   0.25800   0.02406
Wat4  -0.47630   0.12300   0.19250   0.06713
Wat5   0.22890  -0.23060   0.33380   0.01773
Wat6  -0.22410   0.03870   0.16770   0.01773