mineral

Copper Nugget

Native Copper (Cu)

Hardness: 2.5-3; Color: Copper-red to brown; Luster: Metallic; Crystal Structure: Isometric; Cleavage: None; Specific Gravity: 8.94

Hardness: 2
Color: Copper-red to brown
Luster: Metallic

Identified June 17, 2026More mineral →

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Physical properties

Hardness: 2.5-3; Color: Copper-red to brown; Luster: Metallic; Crystal Structure: Isometric; Cleavage: None; Specific Gravity: 8.94

Formation & geological history

Formed in the oxidation zones of copper deposits or from hydrothermal solutions. Often found in basaltic lavas through precipitation.

Uses & applications

Electrical wiring, plumbing, alloys (bronze/brass), jewelry making, and as a popular collector specimen.

Geological facts

Native copper is one of the few metals that occurs in nature in directly usable metallic form. The largest deposits are historically from the Keweenaw Peninsula in Michigan.

Field identification & locations

Identified by its high density, metallic luster, malleability, and distinctive reddish-orange streak. Often shows green oxidation (malachite) if weathered.