The material described by CaW3Al2Si3O10 crystallizes in the monoclinic Cc space group. Ca(1) is bonded in a distorted water-like geometry to one W(1), one W(2), one W(3), one O(10), and one O(6) atom. There are three inequivalent W sites. In the first W site, W(1) is bonded in a 3-coordinate geometry to one Ca(1), one O(4), and one O(5) atom. In the second W site, W(2) is bonded in a 3-coordinate geometry to one Ca(1), one O(2), and one O(7) atom. In the third W site, W(3) is bonded in a 2-coordinate geometry to one Ca(1) and one O(3) atom. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form AlO4 tetrahedra that share  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, and corners with two equivalent Si(1)O4 tetrahedra. In the second Al site, Al(2) is bonded to one O(10), one O(6), one O(8), and one O(9) atom to form AlO4 tetrahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, and corners with two equivalent Si(3)O4 tetrahedra. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(4), one O(5), and one O(6) atom to form SiO4 tetrahedra that share  a cornercorner with one Al(2)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, and corners with two equivalent Al(1)O4 tetrahedra. In the second Si site, Si(2) is bonded to one O(1), one O(2), one O(7), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Al(2)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra, and  a cornercorner with one Si(3)O4 tetrahedra. In the third Si site, Si(3) is bonded to one O(10), one O(3), one O(7), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, and corners with two equivalent Al(2)O4 tetrahedra. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(2) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one W(2), one Al(1), and one Si(2) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one W(3), one Al(1), and one Si(3) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one W(1), one Al(1), and one Si(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one W(1), one Al(1), and one Si(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Ca(1), one Al(2), and one Si(1) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one W(2), one Si(2), and one Si(3) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Al(2) and one Si(2) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Al(2) and one Si(3) atom. In the tenth O site, O(10) is bonded in a trigonal planar geometry to one Ca(1), one Al(2), and one Si(3) atom. is represented by the CIF file [CIF]
data_CaAl2Si3W3O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.721
_cell_length_b   10.721
_cell_length_c   10.179
_cell_angle_alpha   84.502
_cell_angle_beta   84.502
_cell_angle_gamma   143.984
_symmetry_Int_Tables_number   1
_cell_volume   654.023
_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
  Ca  Ca0  1  0.645  0.324  0.270  1.0
  Ca  Ca1  1  0.324  0.645  0.770  1.0
  Al  Al2  1  0.151  0.242  0.304  1.0
  Al  Al3  1  0.242  0.151  0.804  1.0
  Al  Al4  1  0.074  0.489  0.102  1.0
  Al  Al5  1  0.489  0.074  0.602  1.0
  Si  Si6  1  0.157  0.001  0.527  1.0
  Si  Si7  1  0.001  0.157  0.027  1.0
  Si  Si8  1  0.497  0.752  0.197  1.0
  Si  Si9  1  0.752  0.497  0.697  1.0
  Si  Si10  1  0.734  0.090  0.370  1.0
  Si  Si11  1  0.090  0.734  0.870  1.0
  W  W12  1  0.774  0.874  0.775  1.0
  W  W13  1  0.874  0.774  0.275  1.0
  W  W14  1  0.618  0.521  0.017  1.0
  W  W15  1  0.521  0.618  0.517  1.0
  W  W16  1  0.315  0.027  0.092  1.0
  W  W17  1  0.027  0.315  0.592  1.0
  O  O18  1  0.729  0.932  0.072  1.0
  O  O19  1  0.932  0.729  0.572  1.0
  O  O20  1  0.396  0.532  0.273  1.0
  O  O21  1  0.532  0.396  0.773  1.0
  O  O22  1  0.934  0.163  0.392  1.0
  O  O23  1  0.163  0.934  0.892  1.0
  O  O24  1  0.148  0.085  0.389  1.0
  O  O25  1  0.085  0.148  0.889  1.0
  O  O26  1  0.161  0.086  0.653  1.0
  O  O27  1  0.086  0.161  0.153  1.0
  O  O28  1  0.086  0.375  0.992  1.0
  O  O29  1  0.375  0.086  0.492  1.0
  O  O30  1  0.553  0.869  0.319  1.0
  O  O31  1  0.869  0.553  0.819  1.0
  O  O32  1  0.325  0.694  0.138  1.0
  O  O33  1  0.694  0.325  0.638  1.0
  O  O34  1  0.607  0.041  0.515  1.0
  O  O35  1  0.041  0.607  0.015  1.0
  O  O36  1  0.839  0.293  0.252  1.0
  O  O37  1  0.293  0.839  0.752  1.0
[/CIF]
.
The material described by CaW3Al2Si3O10 crystallizes in the monoclinic Cc space group. Ca(1) is bonded in a distorted water-like geometry to one W(1), one W(2), one W(3), one O(10), and one O(6) atom. There are three inequivalent W sites. In the first W site, W(1) is bonded in a 3-coordinate geometry to one Ca(1), one O(4), and one O(5) atom. In the second W site, W(2) is bonded in a 3-coordinate geometry to one Ca(1), one O(2), and one O(7) atom. In the third W site, W(3) is bonded in a 2-coordinate geometry to one Ca(1) and one O(3) atom. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form AlO4 tetrahedra that share  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, and corners with two equivalent Si(1)O4 tetrahedra. In the second Al site, Al(2) is bonded to one O(10), one O(6), one O(8), and one O(9) atom to form AlO4 tetrahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, and corners with two equivalent Si(3)O4 tetrahedra. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(4), one O(5), and one O(6) atom to form SiO4 tetrahedra that share  a cornercorner with one Al(2)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, and corners with two equivalent Al(1)O4 tetrahedra. In the second Si site, Si(2) is bonded to one O(1), one O(2), one O(7), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Al(2)O4 tetrahedra,  a cornercorner with one Si(1)O4 tetrahedra, and  a cornercorner with one Si(3)O4 tetrahedra. In the third Si site, Si(3) is bonded to one O(10), one O(3), one O(7), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Al(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, and corners with two equivalent Al(2)O4 tetrahedra. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(2) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one W(2), one Al(1), and one Si(2) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one W(3), one Al(1), and one Si(3) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one W(1), one Al(1), and one Si(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one W(1), one Al(1), and one Si(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Ca(1), one Al(2), and one Si(1) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one W(2), one Si(2), and one Si(3) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Al(2) and one Si(2) atom. In the ninth O site, O(9) is bonded in a bent 150 degrees geometry to one Al(2) and one Si(3) atom. In the tenth O site, O(10) is bonded in a trigonal planar geometry to one Ca(1), one Al(2), and one Si(3) atom. is represented by the CIF file [CIF]
data_CaAl2Si3W3O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.721
_cell_length_b   10.721
_cell_length_c   10.179
_cell_angle_alpha   84.502
_cell_angle_beta   84.502
_cell_angle_gamma   143.984
_symmetry_Int_Tables_number   1
_cell_volume   654.023
_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
  Ca  Ca0  1  0.645  0.324  0.270  1.0
  Ca  Ca1  1  0.324  0.645  0.770  1.0
  Al  Al2  1  0.151  0.242  0.304  1.0
  Al  Al3  1  0.242  0.151  0.804  1.0
  Al  Al4  1  0.074  0.489  0.102  1.0
  Al  Al5  1  0.489  0.074  0.602  1.0
  Si  Si6  1  0.157  0.001  0.527  1.0
  Si  Si7  1  0.001  0.157  0.027  1.0
  Si  Si8  1  0.497  0.752  0.197  1.0
  Si  Si9  1  0.752  0.497  0.697  1.0
  Si  Si10  1  0.734  0.090  0.370  1.0
  Si  Si11  1  0.090  0.734  0.870  1.0
  W  W12  1  0.774  0.874  0.775  1.0
  W  W13  1  0.874  0.774  0.275  1.0
  W  W14  1  0.618  0.521  0.017  1.0
  W  W15  1  0.521  0.618  0.517  1.0
  W  W16  1  0.315  0.027  0.092  1.0
  W  W17  1  0.027  0.315  0.592  1.0
  O  O18  1  0.729  0.932  0.072  1.0
  O  O19  1  0.932  0.729  0.572  1.0
  O  O20  1  0.396  0.532  0.273  1.0
  O  O21  1  0.532  0.396  0.773  1.0
  O  O22  1  0.934  0.163  0.392  1.0
  O  O23  1  0.163  0.934  0.892  1.0
  O  O24  1  0.148  0.085  0.389  1.0
  O  O25  1  0.085  0.148  0.889  1.0
  O  O26  1  0.161  0.086  0.653  1.0
  O  O27  1  0.086  0.161  0.153  1.0
  O  O28  1  0.086  0.375  0.992  1.0
  O  O29  1  0.375  0.086  0.492  1.0
  O  O30  1  0.553  0.869  0.319  1.0
  O  O31  1  0.869  0.553  0.819  1.0
  O  O32  1  0.325  0.694  0.138  1.0
  O  O33  1  0.694  0.325  0.638  1.0
  O  O34  1  0.607  0.041  0.515  1.0
  O  O35  1  0.041  0.607  0.015  1.0
  O  O36  1  0.839  0.293  0.252  1.0
  O  O37  1  0.293  0.839  0.752  1.0
[/CIF]
.