metamorphic

Polished sodalite-bearing rock

Likely sodalite in a feldspar-rich host; exact rock identification is uncertain from the image

AI-generated identification · may be incorrect

Blue sodalite patches with white, orange, and brown host minerals; polished, opaque surface and vitreous-to-greasy luster. Sodalite is typically Mohs 5.5–6, cubic, and has poor cleavage; the mixed specimen’s hardness varies by mineral.

Identified October 11, 2026More metamorphic →

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Physical properties

Formation & geological history

Sodalite commonly crystallizes in silica-poor igneous rocks such as nepheline syenite and related metasomatic settings. Its geological age depends on the deposit; the pictured piece appears tumbled or polished.

Uses & applications

Used mainly for ornamental stone, cabochons, beads, and mineral collecting; sodalite is also used as a decorative dimension stone.

Geological facts

Sodalite is a sodium-aluminum silicate chloride, Na₈(Al₆Si₆O₂₄)Cl₂; its vivid blue color can resemble lapis lazuli, though it generally lacks abundant gold-colored pyrite.

Field identification & locations

Look for opaque royal-blue areas, often with white veining, alongside contrasting host minerals. Important sources include Canada, Brazil, Namibia, and Greenland; a definitive ID may require testing or mineralogical analysis.