The structure described by AgFe2S3 is Sulvanite-like structured and crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one S(1), one S(3), and two equivalent S(2) atoms to form FeS4 tetrahedra that share corners with three equivalent Fe(2)S4 tetrahedra, corners with five equivalent Ag(1)S4 tetrahedra,  an edgeedge with one Fe(1)S4 tetrahedra, and  an edgeedge with one Fe(2)S4 tetrahedra. In the second Fe site, Fe(2) is bonded to one S(1), one S(2), and two equivalent S(3) atoms to form FeS4 tetrahedra that share corners with two equivalent Fe(2)S4 tetrahedra, corners with three equivalent Fe(1)S4 tetrahedra, corners with five equivalent Ag(1)S4 tetrahedra, and  an edgeedge with one Fe(1)S4 tetrahedra. Ag(1) is bonded to one S(2), one S(3), and two equivalent S(1) atoms to form AgS4 tetrahedra that share corners with two equivalent Ag(1)S4 tetrahedra, corners with five equivalent Fe(1)S4 tetrahedra, and corners with five equivalent Fe(2)S4 tetrahedra. There are three inequivalent S sites. In the first S site, S(1) is bonded to one Fe(1), one Fe(2), and two equivalent Ag(1) atoms to form corner-sharing SFe2Ag2 tetrahedra. In the second S site, S(2) is bonded in a 4-coordinate geometry to one Fe(2), two equivalent Fe(1), and one Ag(1) atom. In the third S site, S(3) is bonded in a 4-coordinate geometry to one Fe(1), two equivalent Fe(2), and one Ag(1) atom. is represented by the CIF file [CIF]
data_Fe2AgS3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.493
_cell_length_b   6.340
_cell_length_c   12.388
_cell_angle_alpha   61.587
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   448.536
_cell_formula_units_Z   4
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Fe  Fe0  1  0.889  0.834  0.002  1.0
  Fe  Fe1  1  0.389  0.166  0.498  1.0
  Fe  Fe2  1  0.111  0.166  0.998  1.0
  Fe  Fe3  1  0.611  0.834  0.502  1.0
  Fe  Fe4  1  0.876  0.487  0.829  1.0
  Fe  Fe5  1  0.376  0.513  0.671  1.0
  Fe  Fe6  1  0.124  0.513  0.171  1.0
  Fe  Fe7  1  0.624  0.487  0.329  1.0
  Ag  Ag8  1  0.899  0.170  0.669  1.0
  Ag  Ag9  1  0.399  0.830  0.831  1.0
  Ag  Ag10  1  0.101  0.830  0.331  1.0
  Ag  Ag11  1  0.601  0.170  0.169  1.0
  S  S12  1  0.785  0.782  0.853  1.0
  S  S13  1  0.285  0.218  0.647  1.0
  S  S14  1  0.215  0.218  0.147  1.0
  S  S15  1  0.715  0.782  0.353  1.0
  S  S16  1  0.781  0.165  0.989  1.0
  S  S17  1  0.281  0.835  0.511  1.0
  S  S18  1  0.219  0.835  0.011  1.0
  S  S19  1  0.719  0.165  0.489  1.0
  S  S20  1  0.711  0.531  0.671  1.0
  S  S21  1  0.211  0.469  0.829  1.0
  S  S22  1  0.289  0.469  0.329  1.0
  S  S23  1  0.789  0.531  0.171  1.0
[/CIF]
.
The structure described by AgFe2S3 is Sulvanite-like structured and crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one S(1), one S(3), and two equivalent S(2) atoms to form FeS4 tetrahedra that share corners with three equivalent Fe(2)S4 tetrahedra, corners with five equivalent Ag(1)S4 tetrahedra,  an edgeedge with one Fe(1)S4 tetrahedra, and  an edgeedge with one Fe(2)S4 tetrahedra. In the second Fe site, Fe(2) is bonded to one S(1), one S(2), and two equivalent S(3) atoms to form FeS4 tetrahedra that share corners with two equivalent Fe(2)S4 tetrahedra, corners with three equivalent Fe(1)S4 tetrahedra, corners with five equivalent Ag(1)S4 tetrahedra, and  an edgeedge with one Fe(1)S4 tetrahedra. Ag(1) is bonded to one S(2), one S(3), and two equivalent S(1) atoms to form AgS4 tetrahedra that share corners with two equivalent Ag(1)S4 tetrahedra, corners with five equivalent Fe(1)S4 tetrahedra, and corners with five equivalent Fe(2)S4 tetrahedra. There are three inequivalent S sites. In the first S site, S(1) is bonded to one Fe(1), one Fe(2), and two equivalent Ag(1) atoms to form corner-sharing SFe2Ag2 tetrahedra. In the second S site, S(2) is bonded in a 4-coordinate geometry to one Fe(2), two equivalent Fe(1), and one Ag(1) atom. In the third S site, S(3) is bonded in a 4-coordinate geometry to one Fe(1), two equivalent Fe(2), and one Ag(1) atom. is represented by the CIF file [CIF]
data_Fe2AgS3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.493
_cell_length_b   6.340
_cell_length_c   12.388
_cell_angle_alpha   61.587
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   448.536
_cell_formula_units_Z   4
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Fe  Fe0  1  0.889  0.834  0.002  1.0
  Fe  Fe1  1  0.389  0.166  0.498  1.0
  Fe  Fe2  1  0.111  0.166  0.998  1.0
  Fe  Fe3  1  0.611  0.834  0.502  1.0
  Fe  Fe4  1  0.876  0.487  0.829  1.0
  Fe  Fe5  1  0.376  0.513  0.671  1.0
  Fe  Fe6  1  0.124  0.513  0.171  1.0
  Fe  Fe7  1  0.624  0.487  0.329  1.0
  Ag  Ag8  1  0.899  0.170  0.669  1.0
  Ag  Ag9  1  0.399  0.830  0.831  1.0
  Ag  Ag10  1  0.101  0.830  0.331  1.0
  Ag  Ag11  1  0.601  0.170  0.169  1.0
  S  S12  1  0.785  0.782  0.853  1.0
  S  S13  1  0.285  0.218  0.647  1.0
  S  S14  1  0.215  0.218  0.147  1.0
  S  S15  1  0.715  0.782  0.353  1.0
  S  S16  1  0.781  0.165  0.989  1.0
  S  S17  1  0.281  0.835  0.511  1.0
  S  S18  1  0.219  0.835  0.011  1.0
  S  S19  1  0.719  0.165  0.489  1.0
  S  S20  1  0.711  0.531  0.671  1.0
  S  S21  1  0.211  0.469  0.829  1.0
  S  S22  1  0.289  0.469  0.329  1.0
  S  S23  1  0.789  0.531  0.171  1.0
[/CIF]
.