mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
AI-generated identification · may be incorrectHardness: 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
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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.
