mineral

Gold Nugget

Native Gold (Au)

Hardness: 2.5-3.0 Mohs; Color: Golden yellow to brassy; Luster: Metallic; Crystal structure: Isometric (Cubic); Cleavage: None; Specific Gravity: 19.3

Hardness: 2
Color: Golden yellow to brassy
Luster: Metallic

Identified June 20, 2026More mineral →

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Physical properties

Hardness: 2.5-3.0 Mohs; Color: Golden yellow to brassy; Luster: Metallic; Crystal structure: Isometric (Cubic); Cleavage: None; Specific Gravity: 19.3

Formation & geological history

Formed in hydrothermal quartz veins at high temperatures or concentrated in alluvial placer deposits through erosion. Often associated with volcanic activity or ancient seabed uplift.

Uses & applications

Used widely in jewelry, the financial industry (bullion), electronics (due to high conductivity), and aerospace technology.

Geological facts

Gold is incredibly ductile; a single ounce can be beaten into a sheet covering 100 square feet. It is one of the few elements that does not tarnish or oxidize.

Field identification & locations

Identify in the field by its high density and malleability (it dents rather than shatters). Found in stream beds, gravel bars, and quartz outcroppings in regions like California, Alaska, and Australia.