mineral

Likely galena (lead ore)

Galena, PbS (lead sulfide)

AI-generated identification · may be incorrect

The specimen appears dark gray with scattered bright metallic reflections, consistent with galena, though the photo does not show diagnostic cleavage clearly. Galena has Mohs hardness 2.5, metallic luster, cubic crystals and perfect cubic cleavage; specific gravity is about 7.4–7.6.

Identified September 25, 2026More mineral →

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Physical properties

Formation & geological history

Forms in hydrothermal veins and replacement deposits, commonly with sphalerite, calcite or quartz; deposits range from ancient to geologically recent. Identification and age cannot be confirmed from this image alone.

Uses & applications

A major lead ore used in lead production, including batteries and radiation shielding; attractive crystals are collected, but lead-bearing specimens are not jewelry material.

Geological facts

Galena’s unusually high density and cubic cleavage are distinctive. Lead and its dust are toxic, so avoid grinding it and wash hands after handling.

Field identification & locations

Check for a heavy feel, metallic gray streak, and cubic cleavage; common deposits occur worldwide, including the United States, Australia and Europe. Estimated value: about $5–$30 for a small common specimen, more for well-formed crystals.