data_9009976
_chemical_name 'Ferrohornblende'
loop_
_publ_author_name
'Guha R'
'Nag D K'
'Iyengar S V P'
_journal_name_full "Indian Minerals"
_journal_volume 41
_journal_year 1987
_journal_page_first 32
_journal_page_last 41
_publ_section_title
;
 Structure of an amphibole from Simlipal granite, India
 Locality: Simlipal granite, India
;
_chemical_formula_sum 'Na Ca2 Fe5 Si8 O24'
_cell_length_a 9.984
_cell_length_b 18.223
_cell_length_c 5.327
_cell_angle_alpha 90
_cell_angle_beta 105.05
_cell_angle_gamma 90
_cell_volume 935.943
_symmetry_space_group_name_H-M 'C 1 2/m 1'
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '1/2+x,1/2+y,z'
  'x,-y,z'
  '1/2+x,1/2-y,z'
  '-x,y,-z'
  '1/2-x,1/2+y,-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
NaA   0.00000   0.50000   0.00000
Ca4   0.00000   0.28067   0.50000
Fe1   0.00000   0.09039   0.50000
Fe2   0.00000   0.17932   0.00000
Fe3   0.00000   0.00000   0.00000
Si1   0.27843   0.08576   0.30085
Si2   0.29057   0.17211   0.81134
O1   0.10926   0.09127   0.21465
O2   0.12452   0.17646   0.73269
O3   0.11370   0.00000   0.71462
O4   0.36681   0.24796   0.79095
O5   0.34650   0.13767   0.09989
O6   0.34057   0.11872   0.59910
O7   0.33094   0.00000   0.28852