mineral
Native Copper
Copper (Cu)
AI-generated identification · may be incorrectMohs hardness: 2.5 to 3, Color: Copper-red, reddish-brown, often with a green tarnish (patina), Luster: Metallic, Crystal system: Isometric, Cleavage: None, Specific gravity: 8.9
- Hardness
- 2
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Physical properties
Mohs hardness: 2.5 to 3, Color: Copper-red, reddish-brown, often with a green tarnish (patina), Luster: Metallic, Crystal system: Isometric, Cleavage: None, Specific gravity: 8.9
Formation & geological history
Formed in hydrothermal veins, as secondary deposits in basaltic lava cavities, and through the oxidation of copper sulfide deposits.
Uses & applications
Electrical wiring, plumbing, coinage, industrial machinery, and decorative or collector items.
Geological facts
Native copper was one of the first metals used by humans, marking the beginning of the Chalcolithic (Copper Age) around 5,000 years ago.
Field identification & locations
Easily identified by its distinctive reddish-copper color, high density, and malleability. Found worldwide, with major deposits in Michigan (USA), Chile, and the Ural Mountains.
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