mineral

Galena (likely)

Galena, lead sulfide (PbS)

AI-generated identification · may be incorrect

Small, metallic silver-gray specimen with reflective, irregular surfaces; galena has Mohs hardness 2.5, cubic crystals and perfect cubic cleavage, and very high specific gravity (~7.4–7.6).

Identified October 3, 2026More mineral →

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Physical properties

Small, metallic silver-gray specimen with reflective, irregular surfaces; galena has Mohs hardness 2.5, cubic crystals and perfect cubic cleavage, and very high specific gravity (~7.4–7.6).

Formation & geological history

Forms in hydrothermal veins and carbonate-replacement deposits as lead-bearing fluids cool; deposits range from ancient to geologically recent.

Uses & applications

The principal ore of lead, used in lead-acid batteries, radiation shielding and other lead products; attractive specimens are collected, but it is not typically used as jewelry material.

Geological facts

Galena is exceptionally dense for its size and commonly shows stepped, cube-like cleavage faces. The pictured specimen’s identity is tentative from the image alone.

Field identification & locations

Look for its metallic lead-gray color, unusual heft and blocky cleavage; common in lead-zinc districts worldwide, including the United States. Avoid creating dust or ingesting it, since lead compounds are toxic.