mineral

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Hardness: 5.5-6.0 Mohs; Color: Royal blue to lavender with white veining; Luster: Vitreous to greasy; Crystal Structure: Isometric; Cleavage: Poor; Specific Gravity: 2.27-2.33.

Hardness: 5
Color: Royal blue to lavender with white veining
Luster: Vitreous to greasy

Identified June 13, 2026More mineral →

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Physical properties

Hardness: 5.5-6.0 Mohs; Color: Royal blue to lavender with white veining; Luster: Vitreous to greasy; Crystal Structure: Isometric; Cleavage: Poor; Specific Gravity: 2.27-2.33.

Formation & geological history

Formed in silica-poor igneous rocks such as nepheline syenites or in metasomatized calcareous rocks. Commonly associated with pegmatites.

Uses & applications

Used primarily in jewelry as beads and cabochons, as an ornamental stone for carvings and countertops, and popular among mineral collectors.

Geological facts

Sodalite is often confused with Lapis Lazuli, but Sodalite lacks the golden pyrite flecks common in Lapis. It can also exhibit fluorescence under UV light.

Field identification & locations

Identify by its deep blue color and white calcite streaks. It is common in regions like Brazil, Canada (Bancroft), and Namibia. It feels lighter than lapis or blue quartz.