Calcite
From the collection · View photograph

Stones underfoot / Collection

Calcite

Russia, Samara Region, Volga River basin

Chemical formulaCaCO₃

Mohs hardness
3
Dimensions
36×25 mm

Properties

Specimen properties and description

Colour
White
Density
2,71 g/cm³
Lustre
Vitreous, pearly
Transparency
Opaque
Cleavage
Usually along twin lamellae on {0112} and {0001}
Crystal system
Trigonal

Crystal structure

Trigonal crystal system

Crystal symmetry diagram.

Trigonal crystal system
Calcite