mineral

Native copper-bearing rock (probable copper ore)

Native copper (Cu), likely with copper sulfide/oxide minerals in a host rock

AI-generated identification · may be incorrect

Metallic copper-red and dark gray/black patches; native copper is Mohs 2.5–3, opaque, metallic, malleable, and commonly occurs as irregular grains or veins. The specimen appears rough and matrix-bearing, but exact minerals cannot be confirmed from the image alone.

Identified August 12, 2026More mineral →

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Physical properties

Formation & geological history

Forms in hydrothermal veins and oxidized zones of copper deposits, commonly associated with basalt or other volcanic rocks; ages vary from Precambrian to recent geologic settings.

Uses & applications

Copper is important for electrical wiring, plumbing, alloys, and industry; attractive native-copper specimens are collected, though this small rough piece has limited gem value.

Geological facts

Copper’s distinctive red-orange metallic color and malleability help distinguish it from most sulfide minerals. It may develop green patina from oxidation.

Field identification & locations

Likely identification requires a streak, conductivity, density, and examination for malleability; copper commonly occurs in Michigan’s Keweenaw Peninsula, Arizona, Chile, and Australia.