mineral
Blue sodalite (likely)
Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂
AI-generated identification · may be incorrectOpaque, mottled blue with pale veins and a dull-to-vitreous luster; hardness about 5.5–6 Mohs, cubic crystal structure, and poor cleavage. The photo is not detailed enough to confirm the identification; similar blue minerals include lapis lazuli and dyed stone.
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Physical properties
Opaque, mottled blue with pale veins and a dull-to-vitreous luster; hardness about 5.5–6 Mohs, cubic crystal structure, and poor cleavage. The photo is not detailed enough to confirm the identification; similar blue minerals include lapis lazuli and dyed stone.
Formation & geological history
Forms in silica-poor, sodium-rich igneous rocks, especially nepheline syenite, through crystallization from magma. Deposits occur in geologically varied ages.
Uses & applications
Used as a decorative stone in carvings, beads, and jewelry, as well as for mineral collecting; it is generally not used as a major industrial mineral.
Geological facts
Sodalite is often confused with lapis lazuli, but typically lacks lapis’s abundant golden pyrite flecks.
Field identification & locations
Look for opaque royal-to-denim blue with white calcite veining; common sources include Canada, Brazil, Namibia, and Greenland. A hardness or streak test may help distinguish it from lookalikes.
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