mineral

Galena (likely)

Galena, lead sulfide (PbS)

AI-generated identification · may be incorrect

Silvery-gray, metallic luster, with a rounded and possibly weathered surface. Galena has Mohs hardness 2.5, a cubic crystal structure, perfect cubic cleavage, and specific gravity about 7.4–7.6; the image alone cannot confirm these diagnostic properties.

Identified October 14, 2026More mineral →

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Physical properties

Formation & geological history

Forms in hydrothermal veins and replacement deposits, commonly alongside sphalerite, calcite, and quartz. Such deposits formed across many geological ages as mineral-rich fluids cooled in rock fractures.

Uses & applications

The principal ore of lead, used in lead-acid batteries, radiation shielding, and other lead products; attractive crystals are collected, though lead-bearing specimens require careful handling.

Geological facts

Galena’s unusually high density and cubic cleavage are key identifiers. Avoid grinding or prolonged handling, and wash hands after contact because lead is toxic.

Field identification & locations

Common in mining districts worldwide, including the United States, Mexico, and Australia. Confirm by heft, soft scratchability, and cubic cleavage; this rounded specimen’s identity is uncertain from the photo.