The structure described by NaCaMn3Si5HO15 is Esseneite-derived structured and crystallizes in the triclinic P-1 space group. Na(1) is bonded in a 9-coordinate geometry to one H(1), one O(1), one O(11), one O(12), one O(14), one O(3), one O(6), and two equivalent O(15) atoms. Ca(1) is bonded in a 7-coordinate geometry to one O(12), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(10), one O(13), one O(14), and two equivalent O(2) atoms to form MnO6 octahedra that share  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Si(5)O4 tetrahedra, corners with three equivalent Si(1)O4 tetrahedra,  an edgeedge with one Mn(1)O6 octahedra,  an edgeedge with one Mn(2)O6 octahedra, and edges with two equivalent Mn(3)O6 octahedra. In the second Mn site, Mn(2) is bonded to one O(10), one O(13), one O(4), one O(5), and two equivalent O(8) atoms to form MnO6 octahedra that share  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, corners with two equivalent Si(3)O4 tetrahedra,  an edgeedge with one Mn(1)O6 octahedra,  an edgeedge with one Mn(2)O6 octahedra, and  an edgeedge with one Mn(3)O6 octahedra. In the third Mn site, Mn(3) is bonded to one O(10), one O(11), one O(14), one O(2), one O(4), and one O(7) atom to form MnO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, corners with two equivalent Si(4)O4 tetrahedra,  an edgeedge with one Mn(2)O6 octahedra, and edges with two equivalent Mn(1)O6 octahedra. There are five inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(15), one O(2), and one O(3) atom to form SiO4 tetrahedra that share  a cornercorner with one Mn(3)O6 octahedra, corners with three equivalent Mn(1)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra, and  a cornercorner with one Si(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 41-63°. 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  a cornercorner with one Mn(3)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, and  a cornercorner with one Si(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 34-63°. In the third Si site, Si(3) is bonded to one O(6), one O(7), one O(8), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Mn(3)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra, and  a cornercorner with one Si(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 33-64°. In the fourth Si site, Si(4) is bonded to one O(10), one O(11), one O(12), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(2)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra,  a cornercorner with one Si(3)O4 tetrahedra, and  a cornercorner with one Si(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 37-64°. In the fifth Si site, Si(5) is bonded to one O(12), one O(13), one O(14), and one O(15) atom to form SiO4 tetrahedra that share  a cornercorner with one Mn(2)O6 octahedra,  a cornercorner with one Mn(3)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, and  a cornercorner with one Si(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-58°. H(1) is bonded in a distorted linear geometry to one Na(1), one O(1), and one O(11) atom. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Na(1), one Mn(1), one Si(1), and one H(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Mn(3), two equivalent Mn(1), and one Si(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Na(1), one Si(1), and one Si(2) atom. In the fourth O site, O(4) is bonded in a distorted tetrahedral geometry to one Ca(1), one Mn(2), one Mn(3), and one Si(2) atom. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Ca(1), one Mn(2), and one Si(2) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Na(1), one Ca(1), one Si(2), and one Si(3) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Ca(1), one Mn(3), and one Si(3) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Ca(1), two equivalent Mn(2), and one Si(3) atom. In the ninth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one Ca(1), one Si(3), and one Si(4) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Mn(1), one Mn(2), one Mn(3), and one Si(4) atom. In the eleventh O site, O(11) is bonded in a 2-coordinate geometry to one Na(1), one Mn(3), one Si(4), and one H(1) atom. In the twelfth O site, O(12) is bonded in a 2-coordinate geometry to one Na(1), one Ca(1), one Si(4), and one Si(5) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one Si(5) atom. In the fourteenth O site, O(14) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Mn(1), one Mn(3), and one Si(5) atom. In the fifteenth O site, O(15) is bonded in a 2-coordinate geometry to two equivalent Na(1), one Si(1), and one Si(5) atom. is represented by the CIF file [CIF]
data_NaCaMn3Si5HO15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.882
_cell_length_b   7.804
_cell_length_c   12.128
_cell_angle_alpha   110.935
_cell_angle_beta   84.503
_cell_angle_gamma   94.318
_symmetry_Int_Tables_number   1
_cell_volume   605.000
_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
  Na  Na0  1  0.362  0.527  0.861  1.0
  Na  Na1  1  0.638  0.473  0.139  1.0
  Ca  Ca2  1  0.281  0.706  0.475  1.0
  Ca  Ca3  1  0.719  0.294  0.525  1.0
  Mn  Mn4  1  0.134  0.864  0.056  1.0
  Mn  Mn5  1  0.866  0.136  0.944  1.0
  Mn  Mn6  1  0.063  0.940  0.349  1.0
  Mn  Mn7  1  0.937  0.060  0.651  1.0
  Mn  Mn8  1  0.171  0.810  0.766  1.0
  Mn  Mn9  1  0.829  0.190  0.234  1.0
  Si  Si10  1  0.356  0.207  0.946  1.0
  Si  Si11  1  0.644  0.793  0.054  1.0
  Si  Si12  1  0.423  0.130  0.673  1.0
  Si  Si13  1  0.577  0.870  0.327  1.0
  Si  Si14  1  0.215  0.356  0.551  1.0
  Si  Si15  1  0.785  0.644  0.449  1.0
  Si  Si16  1  0.299  0.274  0.279  1.0
  Si  Si17  1  0.701  0.726  0.721  1.0
  Si  Si18  1  0.120  0.488  0.146  1.0
  Si  Si19  1  0.880  0.512  0.854  1.0
  H  H20  1  0.478  0.820  0.891  1.0
  H  H21  1  0.522  0.180  0.109  1.0
  O  O22  1  0.556  0.179  0.999  1.0
  O  O23  1  0.444  0.821  0.001  1.0
  O  O24  1  0.179  0.053  0.937  1.0
  O  O25  1  0.821  0.947  0.063  1.0
  O  O26  1  0.418  0.233  0.818  1.0
  O  O27  1  0.582  0.767  0.182  1.0
  O  O28  1  0.249  0.970  0.647  1.0
  O  O29  1  0.751  0.030  0.353  1.0
  O  O30  1  0.359  0.924  0.383  1.0
  O  O31  1  0.641  0.076  0.617  1.0
  O  O32  1  0.378  0.302  0.626  1.0
  O  O33  1  0.622  0.698  0.374  1.0
  O  O34  1  0.167  0.570  0.611  1.0
  O  O35  1  0.833  0.430  0.389  1.0
  O  O36  1  0.033  0.206  0.530  1.0
  O  O37  1  0.967  0.794  0.470  1.0
  O  O38  1  0.335  0.346  0.421  1.0
  O  O39  1  0.665  0.654  0.579  1.0
  O  O40  1  0.134  0.108  0.237  1.0
  O  O41  1  0.866  0.892  0.763  1.0
  O  O42  1  0.486  0.783  0.792  1.0
  O  O43  1  0.514  0.217  0.208  1.0
  O  O44  1  0.235  0.463  0.258  1.0
  O  O45  1  0.765  0.537  0.742  1.0
  O  O46  1  0.077  0.702  0.177  1.0
  O  O47  1  0.923  0.298  0.823  1.0
  O  O48  1  0.070  0.655  0.881  1.0
  O  O49  1  0.930  0.345  0.119  1.0
  O  O50  1  0.282  0.416  0.030  1.0
  O  O51  1  0.718  0.584  0.970  1.0
[/CIF]
.
The structure described by NaCaMn3Si5HO15 is Esseneite-derived structured and crystallizes in the triclinic P-1 space group. Na(1) is bonded in a 9-coordinate geometry to one H(1), one O(1), one O(11), one O(12), one O(14), one O(3), one O(6), and two equivalent O(15) atoms. Ca(1) is bonded in a 7-coordinate geometry to one O(12), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(10), one O(13), one O(14), and two equivalent O(2) atoms to form MnO6 octahedra that share  a cornercorner with one Si(4)O4 tetrahedra, corners with two equivalent Si(5)O4 tetrahedra, corners with three equivalent Si(1)O4 tetrahedra,  an edgeedge with one Mn(1)O6 octahedra,  an edgeedge with one Mn(2)O6 octahedra, and edges with two equivalent Mn(3)O6 octahedra. In the second Mn site, Mn(2) is bonded to one O(10), one O(13), one O(4), one O(5), and two equivalent O(8) atoms to form MnO6 octahedra that share  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, corners with two equivalent Si(3)O4 tetrahedra,  an edgeedge with one Mn(1)O6 octahedra,  an edgeedge with one Mn(2)O6 octahedra, and  an edgeedge with one Mn(3)O6 octahedra. In the third Mn site, Mn(3) is bonded to one O(10), one O(11), one O(14), one O(2), one O(4), and one O(7) atom to form MnO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, corners with two equivalent Si(4)O4 tetrahedra,  an edgeedge with one Mn(2)O6 octahedra, and edges with two equivalent Mn(1)O6 octahedra. There are five inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(15), one O(2), and one O(3) atom to form SiO4 tetrahedra that share  a cornercorner with one Mn(3)O6 octahedra, corners with three equivalent Mn(1)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra, and  a cornercorner with one Si(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 41-63°. 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  a cornercorner with one Mn(3)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, and  a cornercorner with one Si(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 34-63°. In the third Si site, Si(3) is bonded to one O(6), one O(7), one O(8), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Mn(3)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra, and  a cornercorner with one Si(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 33-64°. In the fourth Si site, Si(4) is bonded to one O(10), one O(11), one O(12), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(2)O6 octahedra, corners with two equivalent Mn(3)O6 octahedra,  a cornercorner with one Si(3)O4 tetrahedra, and  a cornercorner with one Si(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 37-64°. In the fifth Si site, Si(5) is bonded to one O(12), one O(13), one O(14), and one O(15) atom to form SiO4 tetrahedra that share  a cornercorner with one Mn(2)O6 octahedra,  a cornercorner with one Mn(3)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, and  a cornercorner with one Si(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-58°. H(1) is bonded in a distorted linear geometry to one Na(1), one O(1), and one O(11) atom. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Na(1), one Mn(1), one Si(1), and one H(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Mn(3), two equivalent Mn(1), and one Si(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Na(1), one Si(1), and one Si(2) atom. In the fourth O site, O(4) is bonded in a distorted tetrahedral geometry to one Ca(1), one Mn(2), one Mn(3), and one Si(2) atom. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Ca(1), one Mn(2), and one Si(2) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Na(1), one Ca(1), one Si(2), and one Si(3) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Ca(1), one Mn(3), and one Si(3) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Ca(1), two equivalent Mn(2), and one Si(3) atom. In the ninth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one Ca(1), one Si(3), and one Si(4) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Mn(1), one Mn(2), one Mn(3), and one Si(4) atom. In the eleventh O site, O(11) is bonded in a 2-coordinate geometry to one Na(1), one Mn(3), one Si(4), and one H(1) atom. In the twelfth O site, O(12) is bonded in a 2-coordinate geometry to one Na(1), one Ca(1), one Si(4), and one Si(5) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one Mn(1), one Mn(2), and one Si(5) atom. In the fourteenth O site, O(14) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Mn(1), one Mn(3), and one Si(5) atom. In the fifteenth O site, O(15) is bonded in a 2-coordinate geometry to two equivalent Na(1), one Si(1), and one Si(5) atom. is represented by the CIF file [CIF]
data_NaCaMn3Si5HO15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.882
_cell_length_b   7.804
_cell_length_c   12.128
_cell_angle_alpha   110.935
_cell_angle_beta   84.503
_cell_angle_gamma   94.318
_symmetry_Int_Tables_number   1
_cell_volume   605.000
_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
  Na  Na0  1  0.362  0.527  0.861  1.0
  Na  Na1  1  0.638  0.473  0.139  1.0
  Ca  Ca2  1  0.281  0.706  0.475  1.0
  Ca  Ca3  1  0.719  0.294  0.525  1.0
  Mn  Mn4  1  0.134  0.864  0.056  1.0
  Mn  Mn5  1  0.866  0.136  0.944  1.0
  Mn  Mn6  1  0.063  0.940  0.349  1.0
  Mn  Mn7  1  0.937  0.060  0.651  1.0
  Mn  Mn8  1  0.171  0.810  0.766  1.0
  Mn  Mn9  1  0.829  0.190  0.234  1.0
  Si  Si10  1  0.356  0.207  0.946  1.0
  Si  Si11  1  0.644  0.793  0.054  1.0
  Si  Si12  1  0.423  0.130  0.673  1.0
  Si  Si13  1  0.577  0.870  0.327  1.0
  Si  Si14  1  0.215  0.356  0.551  1.0
  Si  Si15  1  0.785  0.644  0.449  1.0
  Si  Si16  1  0.299  0.274  0.279  1.0
  Si  Si17  1  0.701  0.726  0.721  1.0
  Si  Si18  1  0.120  0.488  0.146  1.0
  Si  Si19  1  0.880  0.512  0.854  1.0
  H  H20  1  0.478  0.820  0.891  1.0
  H  H21  1  0.522  0.180  0.109  1.0
  O  O22  1  0.556  0.179  0.999  1.0
  O  O23  1  0.444  0.821  0.001  1.0
  O  O24  1  0.179  0.053  0.937  1.0
  O  O25  1  0.821  0.947  0.063  1.0
  O  O26  1  0.418  0.233  0.818  1.0
  O  O27  1  0.582  0.767  0.182  1.0
  O  O28  1  0.249  0.970  0.647  1.0
  O  O29  1  0.751  0.030  0.353  1.0
  O  O30  1  0.359  0.924  0.383  1.0
  O  O31  1  0.641  0.076  0.617  1.0
  O  O32  1  0.378  0.302  0.626  1.0
  O  O33  1  0.622  0.698  0.374  1.0
  O  O34  1  0.167  0.570  0.611  1.0
  O  O35  1  0.833  0.430  0.389  1.0
  O  O36  1  0.033  0.206  0.530  1.0
  O  O37  1  0.967  0.794  0.470  1.0
  O  O38  1  0.335  0.346  0.421  1.0
  O  O39  1  0.665  0.654  0.579  1.0
  O  O40  1  0.134  0.108  0.237  1.0
  O  O41  1  0.866  0.892  0.763  1.0
  O  O42  1  0.486  0.783  0.792  1.0
  O  O43  1  0.514  0.217  0.208  1.0
  O  O44  1  0.235  0.463  0.258  1.0
  O  O45  1  0.765  0.537  0.742  1.0
  O  O46  1  0.077  0.702  0.177  1.0
  O  O47  1  0.923  0.298  0.823  1.0
  O  O48  1  0.070  0.655  0.881  1.0
  O  O49  1  0.930  0.345  0.119  1.0
  O  O50  1  0.282  0.416  0.030  1.0
  O  O51  1  0.718  0.584  0.970  1.0
[/CIF]
.