mineral
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
AI-generated identification · may be incorrectHardness 5.5 to 6 on the Mohs scale, royal blue color often with white calcite veins, vitreous to greasy luster, isometric crystal system, poor cleavage, specific gravity 2.3.
Identified More mineral →
Explore Sodalite in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
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, poor cleavage, specific gravity 2.3.
Formation & geological history
Forms in sodium-rich igneous rocks like nepheline syenites from cooling magma chambers in alkaline environments.
Uses & applications
Used primarily as an ornamental gemstone, for decorative carvings, and in jewelry making.
Geological facts
Sodalite fluoresces a bright orange-red under ultraviolet light and is named for its high sodium content.
Field identification & locations
Identify by its rich blue color and white veining; found in Canada, Greenland, India, and Brazil.
