metamorphic
Likely sodalite-bearing rock
Sodalite (Na₈(Al₆Si₆O₂₄)Cl₂), possibly in a feldspathic host
AI-generated identification · may be incorrectSmall, rough blue-gray specimen with white mottling and a dull to vitreous luster. Sodalite is Mohs 5.5–6, cubic, and has poor cleavage; the image alone cannot confirm its identity or host rock.
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Physical properties
Small, rough blue-gray specimen with white mottling and a dull to vitreous luster. Sodalite is Mohs 5.5–6, cubic, and has poor cleavage; the image alone cannot confirm its identity or host rock.
Formation & geological history
Sodalite forms in silica-poor, sodium-rich igneous environments and associated rocks; the specimen’s age and exact formation history cannot be determined from the image.
Uses & applications
Sodalite is used as an ornamental and lapidary stone; lower-grade material may be collected as a mineral specimen.
Geological facts
Sodalite is commonly confused with lapis lazuli, but typically lacks lapis’s abundant gold-colored pyrite flecks.
Field identification & locations
A blue color with white veining is suggestive, but identification requires tests or inspection for characteristic mineral associations. Sodalite occurs in locations including Canada, Brazil, and Namibia.
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