data_global
_chemical_name_mineral 'Greifensteinite'
loop_
_publ_author_name
'Rastsvetaeva R K'
'Gurbanova O A'
'Chukanov N V'
_journal_name_full 'Doklady Chemistry'
_journal_volume 383 
_journal_year 2002
_journal_page_first 78
_journal_page_last 81
_publ_section_title
;
 Crystal structure of greifensteinite
 Ca2Be4(Fe2+,Mn)5(PO4)6(OH)4*6H2O
;
_database_code_amcsd 0012508
_chemical_compound_source 'Greifenstein, Saxony, Germany'
_chemical_formula_sum 'Ca Be2 (Fe1.6 Al.2 Mg.2) Mn.35 P3 O17 H7.65'
_cell_length_a 15.903
_cell_length_b 11.885
_cell_length_c 6.677
_cell_angle_alpha 90
_cell_angle_beta 94.68
_cell_angle_gamma 90
_cell_volume 1257.793
_exptl_crystal_density_diffrn      2.902
_symmetry_space_group_name_H-M 'C 1 2/c 1'
loop_
_space_group_symop_operation_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_occupancy
_atom_site_U_iso_or_equiv
Ca   0.00000   0.25800   0.25000   1.00000   0.02069
Be   0.33230   0.17460   0.29900   1.00000   0.01887
Fe   0.17080   0.16190   0.99660   0.80000   0.01520
Al   0.17080   0.16190   0.99660   0.10000   0.01520
Mg   0.17080   0.16190   0.99660   0.10000   0.01520
Mn   0.00000   0.00000   0.00000   0.35000   0.01684
P1   0.18670   0.11820   0.47830   1.00000   0.01305
P2   0.00000   0.27400   0.75000   1.00000   0.01596
O1   0.35800   0.49550   0.49360   1.00000   0.01900
O2   0.28040   0.09780   0.44650   1.00000   0.01925
O3   0.14320   0.18310   0.30100   1.00000   0.02090
O4   0.31940   0.31320   0.32720   1.00000   0.01849
O5   0.46170   0.29930   0.07410   1.00000   0.02495
O6   0.43270   0.14920   0.33330   1.00000   0.02508
O-H   0.30070   0.16230   0.06470   1.00000   0.01950
Ow1   0.09390   0.41900   0.22550   1.00000   0.02647
Wat2   0.00000   0.04090   0.25000   0.65000   0.05041
O-H2   0.00000   0.04090   0.25000   0.35000   0.05041
H1   0.07900   0.49400   0.19390   1.00000   0.05066
H2   0.13500   0.41100   0.31500   1.00000   0.06333