mineral

Likely galena in host rock

Galena (PbS), possibly with quartz or calcite matrix

AI-generated identification · may be incorrect

The central dark, shiny mass appears metallic and lead-gray, consistent with galena; galena has Mohs hardness 2.5, cubic crystals, perfect cubic cleavage, and specific gravity about 7.4–7.6. The photo is not detailed enough to confirm its identity.

Identified October 14, 2026More mineral →

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Physical properties

Formation & geological history

Galena forms in hydrothermal veins and replacement deposits, commonly with quartz, calcite, sphalerite, and other sulfides; its age depends on the deposit.

Uses & applications

Galena is the primary ore of lead, historically used in batteries and shielding; attractive crystal specimens are collected, but lead-bearing material is not used in jewelry.

Geological facts

Galena’s unusually high density and tendency to break into cubic fragments are useful diagnostic clues. Avoid grinding or handling it in ways that create dust, and wash hands afterward.

Field identification & locations

Check for a lead-gray streak, exceptional heft, and blocky cubic cleavage; these features cannot be verified from the image. Galena occurs worldwide in lead-zinc ore deposits.