mineral

Native Copper

Native Copper (Cu)

Hardness: 2.5-3.0; Color: Copper-red to dull brown; Luster: Metallic; Crystal Structure: Isometric (cubic); Cleavage: None; Specific Gravity: 8.9

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

Identified June 8, 2026More mineral →

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Physical properties

Hardness: 2.5-3.0; Color: Copper-red to dull brown; Luster: Metallic; Crystal Structure: Isometric (cubic); Cleavage: None; Specific Gravity: 8.9

Formation & geological history

Formed through the interaction of hydrothermal fluids with rocks, often in volcanic basalt cavities or as a secondary mineral in oxidation zones of copper deposits. Famous Michigan deposits are roughly 1 billion years old.

Uses & applications

Primary use is in electrical wiring, plumbing, and industrial alloys. This metallic specimen is also valued by geological collectors for its aesthetic and historical significance.

Geological facts

Copper was the first metal to be worked by humans. Native copper is unique because it occurs in nature in a pure metallic form without being bonded to other elements.

Field identification & locations

Identify in the field by its high density, malleable nature (it can be flattened with a hammer), and characteristic reddish-orange streak. Found in major deposits in Upper Michigan (USA), Chile, and Australia.