mineral

Blue sodalite (likely rough fragments)

Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂; possibly mixed with blue calcite or lapis lazuli

AI-generated identification · may be incorrect

Typically deep royal-blue to gray-blue with white veining or patches; vitreous to greasy luster and commonly massive, with imperfect cleavage. Mohs hardness is about 5.5–6; specific gravity 2.25–2.35. The image is blurred, so exact identification is provisional.

Identified August 18, 2026More mineral →

Explore Blue sodalite (likely rough fragments) in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Forms in silica-poor, alkaline igneous rocks such as nepheline syenite and related pegmatites, crystallizing from alkaline magmas. Major deposits are generally Precambrian to younger alkaline complexes, including Canada, Brazil, Namibia, and Russia.

Uses & applications

Used as an ornamental and carving stone, beads, cabochons, small decorative specimens, and occasionally architectural material. Sodalite is less valuable than gem-quality lapis lazuli but attractive polished pieces are collectible.

Geological facts

Sodalite is one of the principal blue minerals in lapis lazuli, alongside lazurite, calcite, and pyrite. It can fluoresce orange under long-wave ultraviolet light.

Field identification & locations

Look for an intense blue color, white calcite-like veining, moderate hardness, and a nonmetallic luster; it will not usually show pyrite flecks typical of lapis lazuli. A streak, hardness test, UV response, and examination of a fresh surface are needed to distinguish it from dyed stone or lapis.