mineral

Galena (lead sulfide)

Galena, PbS

AI-generated identification · may be incorrect

Lead-gray to silver-gray, metallic luster; Mohs hardness 2.5; cubic crystal system with perfect cubic cleavage; very high specific gravity (~7.4–7.6).

Identified September 25, 2026More mineral →

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Physical properties

Lead-gray to silver-gray, metallic luster; Mohs hardness 2.5; cubic crystal system with perfect cubic cleavage; very high specific gravity (~7.4–7.6).

Formation & geological history

Forms mainly in hydrothermal veins and as a replacement mineral in carbonate rocks, often with sphalerite and other sulfides. Galena deposits span many geological ages; the specimen’s age cannot be determined from the image.

Uses & applications

The principal ore of lead, used in lead-acid batteries, radiation shielding, and some industrial products; attractive crystals are collected, though the mineral is soft and toxic.

Geological facts

Galena is unusually dense and commonly breaks into shiny cubic fragments. Avoid handling dust or using it in jewelry that contacts skin; wash hands after handling.

Field identification & locations

The metallic gray color, exceptional heft, and cubic cleavage are key field clues. Common in mining districts worldwide, including the Mississippi Valley, Broken Hill, and many hydrothermal vein deposits.