mineral

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

AI-generated identification · may be incorrect

Hardness: 5.5-6 on Mohs scale. Color: Rich royal blue to violet-blue, often with white veining. Luster: Vitreous to greasy. Crystal structure: Cubic. Cleavage: Poor. Specific gravity: 2.27-2.33

Hardness: 5
Color: Rich royal blue to violet-blue, often with white veining
Luster: Vitreous to greasy

Identified August 25, 2026More mineral →

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Physical properties

Hardness: 5.5-6 on Mohs scale. Color: Rich royal blue to violet-blue, often with white veining. Luster: Vitreous to greasy. Crystal structure: Cubic. Cleavage: Poor. Specific gravity: 2.27-2.33

Formation & geological history

Typically forms in nepheline syenites, phonolites, and related rock types. Found in silica-poor igneous rocks.

Uses & applications

Popular as an ornamental stone, used in jewelry, carvings, and as a collector's specimen.

Geological facts

Sodalite is a major constituent of the rock lapis lazuli, contributing to its blue color. It was discovered in Greenland in 1811.

Field identification & locations

Identifiable by its deep blue color and white calcite inclusions. Found in locations like Canada, Namibia, India, and the USA.

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