-    STRINGHAMITE     -    CaCuSiO4H2O

 

Crystal Structure 


Because of the translational symmetry all the calculations are performed in the primitive unit cell and not in the conventional unit cell. The following information regarding the structure is given with respect to this primitive unit cell, which sometimes can take an unintuitive shape.

Symmetry (experimental): 

Space group:  14  P2_1/c 
Lattice parameters (Å):  5.0300  16.1350  5.3430 
Angles (°):  90  102.96  90 

Symmetry (theoretical): 

Space group:  14  P2_1/c 
Lattice parameters (Å):  5.0308  15.9823  5.3582 
Angles (°):  90  101.22  90 

Cell contents: 

Number of atoms:  40 
Number of atom types: 
Chemical composition: 

Atomic positions (theoretical):

Ca:  0.6495  0.1764  0.3533 
Cu:  0.0000  0.0000  0.5000 
Cu:  0.5000  0.0000  1.0000 
Si:  0.9860  0.1112  0.9733 
O:  0.9109  0.2060  0.0352 
O:  0.8618  0.0876  0.6799 
O:  0.3158  0.1035  0.0379 
O:  0.8408  0.0524  0.1668 
O:  0.3603  0.2108  0.6470 
H:  0.3519  0.3314  0.2832 
H:  0.1747  0.2592  0.1036 
Ca:  0.3505  0.6764  0.1467 
Cu:  0.0000  0.5000  1.0000 
Cu:  0.5000  0.5000  0.5000 
Si:  0.0140  0.6112  0.5267 
O:  0.0891  0.7060  0.4648 
O:  0.1382  0.5876  0.8201 
O:  0.6842  0.6035  0.4621 
O:  0.1592  0.5524  0.3332 
O:  0.6397  0.7108  0.8530 
H:  0.6481  0.8314  0.2168 
H:  0.8253  0.7592  0.3964 
Ca:  0.3505  0.8236  0.6467 
Si:  0.0140  0.8888  0.0267 
O:  0.0891  0.7940  0.9648 
O:  0.1382  0.9124  0.3201 
O:  0.6842  0.8965  0.9621 
O:  0.1592  0.9476  0.8332 
O:  0.6397  0.7892  0.3530 
H:  0.6481  0.6686  0.7168 
H:  0.8253  0.7408  0.8964 
Ca:  0.6495  0.3236  0.8533 
Si:  0.9860  0.3888  0.4733 
O:  0.9109  0.2940  0.5352 
O:  0.8618  0.4124  0.1799 
O:  0.3158  0.3965  0.5379 
O:  0.8408  0.4476  0.6668 
O:  0.3603  0.2892  0.1470 
H:  0.3519  0.1686  0.7832 
H:  0.1747  0.2408  0.6036 
Atom type 

We have listed here the reduced coordinates of all the atoms in the primitive unit cell.
It is enough to know only the position of the atoms from the assymetrical unit cell and then use the symmetry to build the whole crystal structure.

Visualization of the crystal structure: 

Size:

  
Nx:  Ny:  Nz:    
You can define the size of the supercell to be displayed in the jmol panel as integer translations along the three crys­tallo­gra­phic axis.
Please note that the structure is represented using the pri­mi­tive cell, and not the conventional one.