mineral

Unidentified greenish mineral fragment

Possibly serpentine, prehnite, or green aventurine; species cannot be confirmed from a photograph

AI-generated identification · may be incorrect

Pale green-gray, fine-grained to slightly granular, with a dull to weakly waxy luster and irregular fracture; estimated Mohs hardness about 3–6 depending on composition. No clear crystal faces or cleavage are visible.

Identified September 7, 2026More mineral →

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Physical properties

Formation & geological history

Could form through hydrothermal alteration or metamorphism of magnesium-rich rocks (serpentine), low-temperature veins (prehnite), or quartz-rich igneous/metamorphic material (aventurine). Geological age and locality cannot be determined visually.

Uses & applications

Comparable material may be used for carvings, cabochons, ornamental stone, or crushed aggregate; this small, unverified fragment has little practical or jewelry value.

Geological facts

The granular sparkle may indicate mica or quartz inclusions, but image lighting can create misleading reflections. Reliable identification requires hardness, streak, specific gravity, and ideally Raman or X-ray analysis.

Field identification & locations

Test discreetly: glass-scratching suggests hardness above 5.5; a white streak and acid reaction can help exclude some alternatives. Common possibilities occur worldwide, especially in metamorphic and hydrothermal terrains.