mineral

Native Copper (Tumbled Nugget)

Cu (Native Element)

AI-generated identification · may be incorrect

Hardness: 2.5-3 on Mohs scale; Color: reddish-orange, brownish with dark patina; Luster: metallic; Crystal structure: isometric/cubic; Specific gravity: 8.96; Malleable and ductile.

Hardness: 2
Color: reddish-orange, brownish with dark patina
Luster: metallic

Identified July 23, 2026More mineral →

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Physical properties

Hardness: 2.5-3 on Mohs scale; Color: reddish-orange, brownish with dark patina; Luster: metallic; Crystal structure: isometric/cubic; Specific gravity: 8.96; Malleable and ductile.

Formation & geological history

Formed in primary hydrothermal deposits or secondary oxidation zones of copper sulfide ore bodies. Major occurrences formed during Precambrian and Paleozoic epochs.

Uses & applications

Used widely in electrical wiring, plumbing, electronics, alloys like bronze and brass, lapidary arts, wire-wrapped jewelry, and mineral collecting.

Geological facts

Native copper is one of the few metallic elements that occurs naturally in an uncombined, pure form. Michigan's Keweenaw Peninsula is world-famous for massive native copper deposits.

Field identification & locations

Identified by its high density, metallic copper-red color, malleability, and dark oxidized surface coating. Frequently found in riverbeds or near ancient volcanic Basalt flows.