Monoclinic crystal
The diamond crystal structure belongs to the face-centered cubic lattice, with a repeated two-atom pattern.
An example of the monoclinic crystal orthoclase
Hexagonal hanksite crystal, with threefold c-axis symmetry

In crystallography, the monoclinic crystal system is one of the seven crystal systems.

- Monoclinic crystal system

The seven crystal systems are triclinic, monoclinic, orthorhombic, tetragonal, trigonal, hexagonal, and cubic.

- Crystal system
Monoclinic crystal

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