The crystal structure described by MnZnSiO5 crystallizes in the triclinic P1 space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(10), one O(2), one O(4), one O(5), one O(7), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Si(1)O4 tetrahedra, and corners with two equivalent Si(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 39°. In the second Mn site, Mn(2) is bonded to one O(1), one O(10), one O(3), one O(6), one O(8), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Si(1)O4 tetrahedra, and corners with two equivalent Si(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 39°. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 5-coordinate geometry to one O(10), one O(3), one O(4), one O(7), and one O(8) atom. In the second Zn site, Zn(2) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(5), one O(6), and one O(9) atom. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(2), one O(7), and one O(8) atom to form SiO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra and corners with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 33-47°. In the second Si site, Si(2) is bonded to one O(3), one O(4), one O(5), and one O(6) atom to form SiO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra and corners with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-48°. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Mn(2), one Zn(2), and one Si(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mn(1), one Zn(2), and one Si(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mn(2), one Zn(1), and one Si(2) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Mn(1), one Zn(1), and one Si(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Zn(2), and one Si(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Mn(2), one Zn(2), and one Si(2) atom. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one Mn(1), one Zn(1), and one Si(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Mn(2), one Zn(1), and one Si(1) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one Zn(2) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one Zn(1) atom. is represented by the CIF file [CIF]
data_MnZnSiO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.378
_cell_length_b   7.124
_cell_length_c   8.054
_cell_angle_alpha   90.188
_cell_angle_beta   41.610
_cell_angle_gamma   71.595
_symmetry_Int_Tables_number   1
_cell_volume   179.854
_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
  Mn  Mn0  1  0.498  0.486  0.997  1.0
  Mn  Mn1  1  0.500  0.986  0.995  1.0
  Zn  Zn2  1  0.452  0.234  0.705  1.0
  Zn  Zn3  1  0.567  0.726  0.275  1.0
  Si  Si4  1  0.523  0.233  0.329  1.0
  Si  Si5  1  0.470  0.740  0.665  1.0
  O  O6  1  0.505  0.044  0.228  1.0
  O  O7  1  0.601  0.403  0.177  1.0
  O  O8  1  0.491  0.929  0.764  1.0
  O  O9  1  0.385  0.574  0.822  1.0
  O  O10  1  0.886  0.616  0.331  1.0
  O  O11  1  0.119  0.835  0.687  1.0
  O  O12  1  0.111  0.353  0.664  1.0
  O  O13  1  0.881  0.136  0.302  1.0
  O  O14  1  0.485  0.739  0.080  1.0
  O  O15  1  0.512  0.233  0.912  1.0
[/CIF]
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The crystal structure described by MnZnSiO5 crystallizes in the triclinic P1 space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(10), one O(2), one O(4), one O(5), one O(7), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Mn(2)O6 octahedra, corners with two equivalent Si(1)O4 tetrahedra, and corners with two equivalent Si(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 39°. In the second Mn site, Mn(2) is bonded to one O(1), one O(10), one O(3), one O(6), one O(8), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra, corners with two equivalent Si(1)O4 tetrahedra, and corners with two equivalent Si(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 39°. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 5-coordinate geometry to one O(10), one O(3), one O(4), one O(7), and one O(8) atom. In the second Zn site, Zn(2) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(5), one O(6), and one O(9) atom. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(2), one O(7), and one O(8) atom to form SiO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra and corners with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 33-47°. In the second Si site, Si(2) is bonded to one O(3), one O(4), one O(5), and one O(6) atom to form SiO4 tetrahedra that share corners with two equivalent Mn(1)O6 octahedra and corners with two equivalent Mn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-48°. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Mn(2), one Zn(2), and one Si(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mn(1), one Zn(2), and one Si(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mn(2), one Zn(1), and one Si(2) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Mn(1), one Zn(1), and one Si(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1), one Zn(2), and one Si(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Mn(2), one Zn(2), and one Si(2) atom. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one Mn(1), one Zn(1), and one Si(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Mn(2), one Zn(1), and one Si(1) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one Zn(2) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one Zn(1) atom. is represented by the CIF file [CIF]
data_MnZnSiO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.378
_cell_length_b   7.124
_cell_length_c   8.054
_cell_angle_alpha   90.188
_cell_angle_beta   41.610
_cell_angle_gamma   71.595
_symmetry_Int_Tables_number   1
_cell_volume   179.854
_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
  Mn  Mn0  1  0.498  0.486  0.997  1.0
  Mn  Mn1  1  0.500  0.986  0.995  1.0
  Zn  Zn2  1  0.452  0.234  0.705  1.0
  Zn  Zn3  1  0.567  0.726  0.275  1.0
  Si  Si4  1  0.523  0.233  0.329  1.0
  Si  Si5  1  0.470  0.740  0.665  1.0
  O  O6  1  0.505  0.044  0.228  1.0
  O  O7  1  0.601  0.403  0.177  1.0
  O  O8  1  0.491  0.929  0.764  1.0
  O  O9  1  0.385  0.574  0.822  1.0
  O  O10  1  0.886  0.616  0.331  1.0
  O  O11  1  0.119  0.835  0.687  1.0
  O  O12  1  0.111  0.353  0.664  1.0
  O  O13  1  0.881  0.136  0.302  1.0
  O  O14  1  0.485  0.739  0.080  1.0
  O  O15  1  0.512  0.233  0.912  1.0
[/CIF]
.