mineral

Likely galena-bearing ore

Galena (lead sulfide, PbS), possibly with quartz or calcite gangue

AI-generated identification · may be incorrect

Gray to silver-gray, strongly metallic and coarse-grained; galena has Mohs hardness 2.5–2.75, cubic crystal structure, perfect cubic cleavage, and very high specific gravity (~7.5). The specimen appears massive and partly weathered, so exact identification needs testing.

Identified August 9, 2026More mineral →

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Physical properties

Formation & geological history

Galena forms in hydrothermal vein and replacement deposits, commonly with sphalerite, pyrite, quartz, and carbonates. Most examples are Paleozoic to younger, but age depends on the deposit.

Uses & applications

Historically an important lead ore, used for batteries, radiation shielding, ammunition, and alloys; attractive cubic crystals are collected but are not typically used as gemstones.

Geological facts

Its exceptional heaviness and metallic luster are distinctive; freshly broken surfaces may tarnish rapidly. Lead minerals should not be handled extensively, inhaled as dust, or used near food.

Field identification & locations

Common in Missouri and Wisconsin, the U.S. Rocky Mountains, Mexico, Peru, Australia, and Europe. Check for cubic cleavage, streak on unglazed porcelain, unusual weight, and softness; avoid scratch or dust tests without safety precautions.