mineral

Likely galena-bearing ore

Galena (PbS), possibly with sphalerite or quartz gangue

AI-generated identification · may be incorrect

Gray metallic luster with bright reflective cleavage surfaces and blocky texture; galena is Mohs 2.5–2.75, has perfect cubic cleavage, and very high specific gravity (~7.5). The image is too blurred for a definitive identification.

Identified August 18, 2026More mineral →

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Physical properties

Formation & geological history

Forms in hydrothermal sulfide veins and carbonate-hosted ore deposits, commonly with sphalerite, pyrite, and quartz; deposits range from ancient Precambrian to younger Cenozoic ages.

Uses & applications

Historically the principal lead ore, used for batteries, radiation shielding, ammunition, and lead production; attractive crystals are collected but not generally used in jewelry because lead sulfide is toxic.

Geological facts

Fresh galena typically breaks into shiny cubic fragments and leaves a dark gray streak; it may tarnish to dull gray or iridescent surfaces.

Field identification & locations

Common localities include Missouri and Idaho, USA; Peru, Mexico, Australia, and the UK. Check for unusually high heft, cubic cleavage, and a dark streak, but avoid dust, ingestion, and prolonged handling; wash hands afterward.