mineral

Likely metallic mineral specimen

Probably galena (lead sulfide, PbS), though visual identification is uncertain

AI-generated identification · may be incorrect

Small, silver-gray metallic piece with irregular/angular surfaces and high luster; galena has Mohs hardness 2.5–3, cubic crystals and perfect cubic cleavage, with specific gravity about 7.5. The visible bronze-brown areas may be tarnish or attached matrix.

Identified August 9, 2026More mineral →

Explore Likely metallic mineral specimen 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

Galena forms in hydrothermal veins and carbonate-replacement deposits, commonly with sphalerite, pyrite, and quartz; deposits range from Paleozoic to modern geological ages. A fresh streak and density test are needed for confirmation.

Uses & applications

Historically the principal ore of lead, used in batteries, radiation shielding, ammunition, and specialized alloys; attractive cubic crystals are collected but are not typically used as jewelry because lead compounds are toxic.

Geological facts

Galena is unusually heavy for its size and often produces a dark gray streak. Avoid grinding, prolonged handling, or ingestion, and wash hands after contact.

Field identification & locations

Common localities include Missouri and Illinois, USA; Peru; Mexico; Australia; and the UK. Test with a streak plate, observe cubic cleavage, and compare heft; do not use acid or destructive tests casually.