Crystal systems#

Classifying a unit cell into one of the 7 crystal systems from its lattice parameters and the general unit-cell-volume formula; Steno’s constant interfacial angles; Miller indices from Hauy’s rational face intercepts; and the 14 Bravais lattices.

Weiss’s crystal systems: classifying a unit cell by its axes

Weiss's crystal systems: classifying a unit cell by its axes

Steno’s law: constancy of interfacial angles

Steno's law: constancy of interfacial angles

Hauy’s law of rational indices: Miller indices from face intercepts

Hauy's law of rational indices: Miller indices from face intercepts

Bravais lattices: the 14 lattices and the three cubic centerings

Bravais lattices: the 14 lattices and the three cubic centerings