mineral

Likely galena-bearing ore or metallic sulfide specimen

Probably galena (PbS), possibly mixed with pyrite or other sulfides

AI-generated identification · may be incorrect

Bright silvery-gray metallic luster, granular to crystalline texture, and probable cubic cleavage; galena has Mohs hardness 2.5–2.75 and very high specific gravity (~7.5). The image alone cannot confirm composition, and surface oxidation or lighting may alter appearance.

Identified August 15, 2026More mineral →

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Physical properties

Formation & geological history

Forms in hydrothermal veins and carbonate-replacement deposits, commonly with sphalerite, pyrite, and quartz; deposits range from Precambrian to Cenozoic in age. The specimen may be a broken fragment of ore rather than a complete crystal.

Uses & applications

Galena is the principal lead ore and historically supplied silver; it is mainly an industrial mineral, not a jewelry material. Handle carefully because lead-bearing dust and residues are toxic.

Geological facts

Fresh galena is unusually heavy for its size and commonly breaks along smooth cubic planes. A streak test is lead-gray, but avoid unnecessary testing and wash hands after handling.

Field identification & locations

Common localities include Missouri and the Rocky Mountains in the United States, plus Peru, Mexico, Australia, and Europe; heft, metallic luster, and cubic cleavage are useful clues. Confirm with density, streak, or professional X-ray diffraction.