mineral

Likely copper ore (native copper or copper-rich mineral)

Possibly native copper (Cu); exact identification is uncertain from the image

AI-generated identification · may be incorrect

Small reddish-brown, metallic-looking specimen with an irregular surface. Native copper has Mohs hardness 2.5–3, a copper-red streak, and high density; the photo does not reveal crystal structure or reliably distinguish it from copper sulfides or slag.

Identified October 2, 2026More mineral →

Explore Likely copper ore (native copper or copper-rich mineral) in the encyclopedia →

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Physical properties

Formation & geological history

Native copper forms in copper deposits through chemical reduction, often in basalt-hosted settings; copper ores also form through hydrothermal and sedimentary processes. Geological age depends on the deposit.

Uses & applications

Copper is used in electrical wiring, plumbing, alloys, and decorative objects; attractive native-copper specimens are collected.

Geological facts

Native copper is malleable and conducts electricity exceptionally well. A scratch or streak test and examination of fresh surfaces help distinguish it from lookalikes.

Field identification & locations

Look for a copper-red metallic color, substantial heft, and malleability; common sources include Michigan’s Keweenaw Peninsula and other copper districts. The image alone cannot confirm the identity.