mineral

Blue-gray quartz-rich rock, possibly blue aventurine or sodalite-bearing stone

Probable quartz–feldspar aggregate; exact identification requires testing

AI-generated identification · may be incorrect

Opaque to translucent blue-gray with white veining and a granular texture; likely Mohs 6–7 if quartz-rich, with vitreous to dull luster and no obvious cleavage. Specific gravity is approximately 2.6–2.7.

Identified September 13, 2026More mineral →

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Physical properties

Formation & geological history

Likely formed in a silica-rich igneous or metamorphic environment, with blue coloration from sodalite, dumortierite, or other trace minerals; age cannot be determined visually.

Uses & applications

Used mainly as a lapidary, cabochon, or decorative stone; quality depends on color, pattern, polish, and confirmed mineral identity.

Geological facts

The photograph does not show diagnostic crystals or cleavage, so distinguishing blue quartz, sodalite-bearing rock, dumortierite quartz, and altered feldspathic rock is unreliable from appearance alone.

Field identification & locations

Commonly found as rounded stream or weathered fragments in granitic and metamorphic terrains. Check streak, hardness, translucency, magnetism, and acid reaction; a gemological or X-ray test is needed for a firm name.