mineral
Small blue mineral specimen, possibly sodalite
Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂ (tentative identification)
AI-generated identification · may be incorrectOpaque deep-blue, irregular fragment with a dull to slightly vitreous surface. Sodalite has Mohs hardness 5.5–6, a cubic crystal structure, poor cleavage, and specific gravity around 2.2–2.4; the photo is too small to confirm these traits.
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Physical properties
Opaque deep-blue, irregular fragment with a dull to slightly vitreous surface. Sodalite has Mohs hardness 5.5–6, a cubic crystal structure, poor cleavage, and specific gravity around 2.2–2.4; the photo is too small to confirm these traits.
Formation & geological history
Sodalite forms in silica-poor, sodium-rich igneous rocks, especially nepheline syenite. Its age depends on the deposit and cannot be determined from the image.
Uses & applications
Sodalite is used as a decorative stone, in carvings and jewelry, and as a collector mineral.
Geological facts
Often confused with lapis lazuli; sodalite typically lacks the prominent golden pyrite flecks common in lapis.
Field identification & locations
Blue color and white veining can suggest sodalite, but identification needs a clearer view and simple tests; notable sources include Canada, Brazil, and Namibia.
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