mineral

Native copper (likely a small copper nugget)

Copper, Cu; native-element mineral

AI-generated identification · may be incorrect

Reddish-orange, metallic luster; Mohs hardness 2.5–3, malleable, with a cubic crystal structure. The image is too blurry to confirm diagnostic details such as density or surface texture.

Identified October 14, 2026More mineral →

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Physical properties

Reddish-orange, metallic luster; Mohs hardness 2.5–3, malleable, with a cubic crystal structure. The image is too blurry to confirm diagnostic details such as density or surface texture.

Formation & geological history

Forms when copper-rich fluids precipitate copper in veins and cavities, or through weathering and secondary enrichment of copper deposits. Native copper occurs in rocks ranging from ancient Precambrian formations to younger deposits.

Uses & applications

Used mainly as an ornamental or educational specimen; copper itself is important for electrical wiring, plumbing, roofing, and alloys.

Geological facts

Copper develops a reddish-brown to green patina as it oxidizes; unusually large natural masses have been found in Michigan’s Keweenaw Peninsula.

Field identification & locations

A copper-like color supports the identification, but the photo alone cannot rule out other reddish materials. Native copper is notably dense and malleable, and is commonly found in copper-mining regions such as Michigan, Arizona, and Chile.