mineral

Blue sodalite-bearing rock, likely sodalite in nepheline syenite

Sodalite (Na₈Al₆Si₆O₂₄Cl₂), possibly in nepheline syenite

AI-generated identification · may be incorrect

Blue to gray-blue with cream/white matrix; vitreous to greasy luster and massive texture. Sodalite hardness is 5.5–6 Mohs, with poor cleavage and specific gravity about 2.27–2.33; exact properties are uncertain from the photograph.

Identified August 11, 2026More mineral →

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Physical properties

Formation & geological history

Forms in silica-undersaturated, alkaline igneous rocks such as nepheline syenite, crystallizing from magma during cooling. Deposits commonly formed in the Precambrian to younger geological eras.

Uses & applications

Used as an ornamental stone, carving material, cabochons, beads, and decorative tiles; generally less valuable than lapis lazuli.

Geological facts

Its strong blue color is produced by sulfur-related defects in the crystal structure; white veining or matrix may resemble lapis lazuli but sodalite typically lacks abundant metallic pyrite.

Field identification & locations

Commonly found in Canada, Brazil, Russia, Namibia, and Greenland. Identify by its opaque royal-blue color, relatively low hardness, white veining, and lack of pyrite; testing requires a fresh surface or mineral analysis.