mineral

Dark metallic sulfide specimen, likely galena

Galena (lead sulfide, PbS), possibly mixed with sphalerite or other sulfides

AI-generated identification · may be incorrect

Gray-black metallic luster with irregular to partly cubic-looking cleavage; galena has Mohs hardness 2.5–2.75, perfect cubic cleavage, and very high specific gravity (~7.4–7.6). The photograph is insufficient for definitive identification.

Identified August 27, 2026More mineral →

Explore Dark metallic sulfide specimen, likely galena in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Typically forms in hydrothermal veins and carbonate-hosted ore deposits, commonly with sphalerite, pyrite, and quartz; deposits range from Paleozoic to younger ages.

Uses & applications

Historically the chief ore of lead, used in batteries, radiation shielding, weights, and some industrial compounds; attractive crystals are collected but are not used as gemstones.

Geological facts

Galena is unusually dense and leaves a dark gray streak; fresh surfaces may tarnish. Lead-bearing specimens should be handled with care and kept away from children, food, and dust.

Field identification & locations

Confirm with heft, a streak test, cubic cleavage, and ideally density or X-ray analysis; common localities include Missouri, the U.S. Midwest, Peru, Mexico, Australia, and parts of Europe.