Rock Identifier
Sodalite (Sodalite (Na8Al6Si6O24Cl2)) — mineral
mineral

Sodalite

Sodalite (Na8Al6Si6O24Cl2)

AI-generated identification · may be incorrect

Hardness 5.5 to 6 on the Mohs scale, royal blue color often with white calcite veins, vitreous to greasy luster, isometric crystal system, specific gravity 2.3.

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Physical properties

Hardness 5.5 to 6 on the Mohs scale, royal blue color often with white calcite veins, vitreous to greasy luster, isometric crystal system, specific gravity 2.3.

Formation & geological history

Forms in igneous rocks like nepheline syenites from sodium-rich magma chambers cooling slowly.

Uses & applications

Used primarily as an ornamental stone, in jewelry, and for carved decorative objects.

Geological facts

Sodalite fluorescence under ultraviolet light can reveal a bright orange-yellow color.

Field identification & locations

Identified by its rich blue color and distinctive white calcite inclusions; found worldwide including Canada, Brazil, and India.