The material described by FeCO3 is Calcite structured and crystallizes in the trigonal R-3c space group. Fe(1) is bonded to six equivalent O(1) atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles are 60°. C(1) is bonded in a trigonal planar geometry to three equivalent O(1) atoms. O(1) is bonded in a trigonal planar geometry to two equivalent Fe(1) and one C(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_FeCO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.679
_cell_length_b   5.679
_cell_length_c   5.679
_cell_angle_alpha   48.887
_cell_angle_beta   48.887
_cell_angle_gamma   48.887
_symmetry_Int_Tables_number   1
_cell_volume   95.453
_cell_formula_units_Z   2
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  0.500  0.500  0.500  1.0
  Fe  Fe1  1  0.000  0.000  0.000  1.0
  C  C2  1  0.750  0.750  0.750  1.0
  C  C3  1  0.250  0.250  0.250  1.0
  O  O4  1  0.024  0.750  0.475  1.0
  O  O5  1  0.750  0.475  0.025  1.0
  O  O6  1  0.525  0.976  0.250  1.0
  O  O7  1  0.475  0.024  0.750  1.0
  O  O8  1  0.976  0.250  0.525  1.0
  O  O9  1  0.250  0.525  0.976  1.0
[/CIF]
.
The material described by FeCO3 is Calcite structured and crystallizes in the trigonal R-3c space group. Fe(1) is bonded to six equivalent O(1) atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles are 60°. C(1) is bonded in a trigonal planar geometry to three equivalent O(1) atoms. O(1) is bonded in a trigonal planar geometry to two equivalent Fe(1) and one C(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_FeCO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.679
_cell_length_b   5.679
_cell_length_c   5.679
_cell_angle_alpha   48.887
_cell_angle_beta   48.887
_cell_angle_gamma   48.887
_symmetry_Int_Tables_number   1
_cell_volume   95.453
_cell_formula_units_Z   2
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  0.500  0.500  0.500  1.0
  Fe  Fe1  1  0.000  0.000  0.000  1.0
  C  C2  1  0.750  0.750  0.750  1.0
  C  C3  1  0.250  0.250  0.250  1.0
  O  O4  1  0.024  0.750  0.475  1.0
  O  O5  1  0.750  0.475  0.025  1.0
  O  O6  1  0.525  0.976  0.250  1.0
  O  O7  1  0.475  0.024  0.750  1.0
  O  O8  1  0.976  0.250  0.525  1.0
  O  O9  1  0.250  0.525  0.976  1.0
[/CIF]
.