mineral
Sodalite
Sodium Aluminum Silicate Chloride, Na4Al3(SiO43Cl
AI-generated identification · may be incorrectHardness is 5.5 to 6 on the Mohs scale. Color is royal blue with white calcite veins, and luster is vitreous to greasy.
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Physical properties
Hardness is 5.5 to 6 on the Mohs scale. Color is royal blue with white calcite veins, and luster is vitreous to greasy.
Formation & geological history
Forms in sodium-rich igneous rocks like nepheline syenites from cooling magma chambers.
Uses & applications
Used primarily as an ornamental gemstone, for carved decorative objects, and occasionally as lapidary material.
Geological facts
Sodalite often fluoresces a bright orange-red under ultraviolet light due to mineral impurities.
Field identification & locations
Identify by its rich royal blue color combined with white network veining. Found in Canada, Greenland, and Brazil.
