mineral
Raw blue sodalite
Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂
AI-generated identification · may be incorrectHardness 5.5–6; deep royal-blue with white veining, vitreous to greasy luster, and a cubic crystal structure. The rough fragment’s appearance is consistent with sodalite, though a photo alone cannot confirm identification.
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Physical properties
Hardness 5.5–6; deep royal-blue with white veining, vitreous to greasy luster, and a cubic crystal structure. The rough fragment’s appearance is consistent with sodalite, though a photo alone cannot confirm identification.
Formation & geological history
Forms in silica-poor, sodium-rich igneous rocks, especially nepheline syenite and related alkaline intrusions. Deposits span a wide range of geological ages.
Uses & applications
Used as an ornamental and lapidary stone in beads, carvings, and jewelry; also collected as a mineral specimen.
Geological facts
White patches are commonly calcite, a frequent associate in sodalite-bearing rock.
Field identification & locations
Look for vivid blue color with irregular white calcite veining; it is often confused with lapis lazuli but generally lacks lapis’s golden pyrite flecks. Notable sources include Canada, Brazil, Namibia, and Russia.
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