Crystal systems


On the basis of crystallographic axes the crystals can be grouped into different crystal systems. On the basis of symmetry crystals can be classified into symmetry classes. There are thirty-two classes of symmetry.

Cubic system - Crystals of this system has three axis of equal lengths, which are at right angle to each other and are denoted by a1,a2 and a3.

Tetragonal system - The crystals of this system have two equal horizontal axis and one vertical axis, at rigth angle to each other denoted by a1,a2 and c.

Hexagonal system -

Orthorhombic system -

Monoclinic system -

Triclinic system -