mineral
Sodalite
Na8Al6Si6O24Cl2
AI-generated identification · may be incorrectHardness 5.5-6 on Mohs scale, rich royal blue color with characteristic white calcite veins, vitreous to greasy luster, cubic crystal system.
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Physical properties
Hardness 5.5-6 on Mohs scale, rich royal blue color with characteristic white calcite veins, vitreous to greasy luster, cubic crystal system.
Formation & geological history
Forms in sodium-rich igneous rocks like nepheline syenites from cooling magma chambers.
Uses & applications
Widely used as an ornamental gemstone, for decorative carvings, and in lapidary work.
Geological facts
Sodalite is the primary mineral component of the lapis lazuli rock, though it can also form independent massive deposits.
Field identification & locations
Easily identified by its deep blue hue combined with distinct white veining; commonly sourced from Canada, Greenland, and Brazil.
