mineral

Likely galena (lead glance)

Galena, PbS (lead sulfide)

AI-generated identification · may be incorrect

The specimen appears metallic gray with a dull, tarnished surface and blocky form, consistent with galena, though the photo alone is not definitive. Galena has Mohs hardness 2.5, metallic luster, cubic crystals, perfect cubic cleavage, and high specific gravity (~7.4–7.6).

Identified October 5, 2026More mineral →

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Physical properties

Formation & geological history

Forms in hydrothermal veins and sedimentary replacement deposits, commonly alongside sphalerite and calcite. It occurs in rocks of many geological ages.

Uses & applications

The principal ore of lead, used in lead-acid batteries, radiation shielding, and some alloys; attractive crystals are collected, but lead-bearing material should be handled carefully.

Geological facts

Galena is exceptionally dense for its size and often breaks into shiny cubic fragments; its lead content makes dust or ingestion hazardous.

Field identification & locations

Look for unusually heavy, lead-gray material and right-angle cleavage faces; confirm with density and cleavage rather than appearance alone. Common in lead-zinc districts worldwide, including the United States, Australia, and Europe.