mineral

Likely native copper

Native copper (Cu)

AI-generated identification · may be incorrect

Reddish copper color with metallic luster; Mohs hardness 2.5–3, cubic crystal system, and no distinct cleavage. The photo is blurred, so the identification is tentative.

Identified October 14, 2026More mineral →

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Physical properties

Reddish copper color with metallic luster; Mohs hardness 2.5–3, cubic crystal system, and no distinct cleavage. The photo is blurred, so the identification is tentative.

Formation & geological history

Forms when copper-bearing fluids deposit native metal in fractures and cavities, commonly in basalt or sedimentary rocks. Such deposits span a wide range of geological ages.

Uses & applications

Copper is widely used in electrical wiring, plumbing, roofing, and alloys; native-copper specimens are collected for their distinctive color and shapes.

Geological facts

Copper can develop green or blue-green oxidation coatings, though the pictured surface appears mostly reddish.

Field identification & locations

Look for a dense, malleable metal with a copper-red streak; confirm with tests or a clearer view, since other metallic minerals can resemble it. Major deposits occur in Michigan’s Keweenaw Peninsula and elsewhere.