mineral

Galena

Galena (lead sulfide, PbS)

AI-generated identification · may be incorrect

A metallic gray, freshly fractured mineral with cubic cleavage and commonly cubic crystals; Mohs hardness 2.5–2.75 and exceptionally high specific gravity (~7.5). The specimen appears consistent with a small galena fragment, though image-only identification is provisional.

Identified August 10, 2026More mineral →

Explore 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

Forms mainly in hydrothermal sulfide veins and replacement deposits, often with sphalerite, pyrite, and calcite. Deposits range from Precambrian to Cenozoic in age.

Uses & applications

The principal ore of lead and an important historical source of silver; used in batteries, radiation shielding, ammunition, and some industrial alloys. Collectible crystals commonly have modest value.

Geological facts

Its diagnostic combination is bright lead-gray metallic luster, great weight for its size, and stepped cubic cleavage. Handle carefully: lead-bearing dust or residues are toxic, and specimens should not be ingested.

Field identification & locations

Common localities include Missouri and Colorado (USA), Peru, Mexico, Australia, and parts of Europe. Confirm with heft, cubic cleavage, and a streak test—galena leaves a gray-black streak; avoid acid or destructive tests.