mineral

Uncertain dark metallic mineral specimen

Possibly galena (lead sulfide, PbS), though the image is too blurred for reliable identification

AI-generated identification · may be incorrect

Appears dark gray to black with bright metallic reflections and blocky forms; galena has Mohs hardness 2.5, cubic crystals, perfect cubic cleavage, and specific gravity about 7.5. Color and texture may also fit another metallic sulfide or an artificial object.

Identified August 15, 2026More mineral →

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Physical properties

Formation & geological history

If galena, it formed in hydrothermal ore veins and replacement deposits, commonly with sphalerite, pyrite, and calcite; deposits range from ancient Precambrian to younger Phanerozoic ages.

Uses & applications

Galena is the principal ore of lead and an important historical source of silver; attractive crystals are collected but are not used as gemstones because of softness and toxicity.

Geological facts

Its cubic cleavage and unusually high density are diagnostic; handling should avoid dust and ingestion because lead-bearing material is toxic.

Field identification & locations

Common localities include Missouri, Idaho, Australia, Peru, Mexico, and the United Kingdom. A sharper image, density test, streak test, and visible cubic cleavage are needed for confirmation.