data_global
_chemical_name_mineral 'Protomangano-ferro-anthophyllite'
loop_
_publ_author_name
'Sueno S'
'Matsuura S'
'Gibbs G V'
'Boisen M B'
_journal_name_full 'Physics and Chemistry of Minerals'
_journal_volume 25 
_journal_year 1998
_journal_page_first 366
_journal_page_last 377
_publ_section_title
;
 A crystal chemical study of protoanthophyllite:
 orthoamphiboles with the protoamphibole structure
 Sample: PMFA Yokene Mine
;
_database_code_amcsd 0008148
_chemical_formula_sum 'Fe4.699 Mg.901 Mn1.4 Si8 O24 H2'
_cell_length_a 9.425
_cell_length_b 18.303
_cell_length_c 5.345
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 922.043
_exptl_crystal_density_diffrn      3.501
_symmetry_space_group_name_H-M 'P n m n'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2-x,1/2+y,1/2+z'
  '1/2+x,1/2-y,1/2-z'
  '1/2+x,1/2+y,1/2-z'
  '1/2-x,1/2-y,1/2+z'
  'x,-y,z'
  '-x,y,-z'
  '-x,-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
FeM1   0.00000   0.08795   0.50000   0.88000   0.00760
MgM1   0.00000   0.08795   0.50000   0.12000   0.00760
FeM2   0.00000   0.17954   0.00000   0.75200   0.00735
MgM2   0.00000   0.17954   0.00000   0.24800   0.00735
FeM3   0.00000   0.00000   0.00000   0.83500   0.00722
MgM3   0.00000   0.00000   0.00000   0.16500   0.00722
FeM4   0.00000   0.26096   0.50000   0.30000   0.01013
MnM4   0.00000   0.26096   0.50000   0.70000   0.01013
Si1   0.28410   0.08380   0.16460   1.00000   0.00469
Si2   0.29520   0.16780   0.66170   1.00000   0.00570
O1   0.11270   0.08790   0.16220   1.00000   0.00760
O2   0.12350   0.17430   0.66490   1.00000   0.00849
O-H3   0.11400   0.00000   0.65990   1.00000   0.00861
O4   0.12010   0.25660   0.18470   1.00000   0.00912
O5   0.34450   0.12340   0.41310   1.00000   0.01013
O6   0.34730   0.12440   0.91800   1.00000   0.01115
O7   0.33780   0.00000   0.16220   1.00000   0.01203