mineral
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
AI-generated identification · may be incorrectHardness 5.5 to 6 on the Mohs scale, royal blue color often veined with white calcite, vitreous to greasy luster, and isometric crystal system.
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Physical properties
Hardness 5.5 to 6 on the Mohs scale, royal blue color often veined with white calcite, vitreous to greasy luster, and isometric crystal system.
Formation & geological history
Forms in sodium-rich igneous environments from the crystallization of silica-poor magmas.
Uses & applications
Used primarily as an ornamental gemstone, for carved decorative objects, and in lapidary work.
Geological facts
Sodalite fluoresces a bright orange-red under ultraviolet light and was first discovered in Greenland in 1810.
Field identification & locations
Identified by its distinctive royal blue color combined with white calcite streaks; commonly found in Canada, Brazil, and India.
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