mineral

Galena-bearing sulfide ore

Galena (lead sulfide, PbS), possibly with sphalerite and/or pyrite

AI-generated identification · may be incorrect

Metallic lead-gray, coarse crystalline and strongly reflective; galena has Mohs hardness 2.5–2.75, cubic crystals, perfect cubic cleavage, and very high specific gravity (~7.5). The specimen appears massive/granular, so cleavage and density are not fully diagnostic from the image.

Identified August 17, 2026More mineral →

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Physical properties

Formation & geological history

Forms in hydrothermal veins and replacement deposits, commonly with sphalerite, pyrite, quartz, and carbonates. Deposits range widely in age, from Precambrian to recent geologic systems.

Uses & applications

Major historical ore of lead and an important source of silver; used in batteries, radiation shielding, and specialized alloys. Untreated specimens are collected for their metallic luster and crystal habit.

Geological facts

Galena is unusually dense for its size and commonly produces a dark gray streak. It may contain enough silver to be called argentiferous galena, though silver content cannot be determined visually.

Field identification & locations

Likely identification requires testing: heft, cubic cleavage, dark gray streak, and confirmation by chemical or analytical testing. Common localities include Missouri and the Tri-State District (USA), Peru, Mexico, Australia, and Europe; avoid inhaling dust or handling food after contact because lead compounds are toxic.