mineral
Native Copper
Copper (Cu)
Hardness: 2.5 to 3 on the Mohs scale, Color: Copper-red with often a green patina (malachite/azurite), Luster: Metallic, Crystal Structure: Isometric, Cleavage: None (has octahedral parting), Specific Gravity: 8.9
- Hardness
- 2
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Physical properties
Hardness: 2.5 to 3 on the Mohs scale, Color: Copper-red with often a green patina (malachite/azurite), Luster: Metallic, Crystal Structure: Isometric, Cleavage: None (has octahedral parting), Specific Gravity: 8.9
Formation & geological history
Forms in hydrothermal veins, as secondary alteration products in basaltic lava cavities, and through the oxidation of copper sulfide deposits.
Uses & applications
Used extensively in electrical wiring, plumbing, electronics, coinage, and decorative art or jewelry.
Geological facts
Native copper is one of the few metallic elements found in native form in large quantities, with the Keweenaw Peninsula in Michigan hosting some of the largest historic deposits.
Field identification & locations
Easily identified by its characteristic reddish-orange metallic color, high density, and malleability. Found worldwide, notably in the USA (Michigan, Arizona), Chile, and Russia.
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