mineral
Copper Nugget
Native Copper (Cu)
AI-generated identification · may be incorrectHardness: 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
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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.
