mineral

Gold Nugget

Native Gold (Au)

Hardness: 2.5–3 on Mohs scale; Color: Golden-yellow, butter yellow; Luster: Metallic; Crystal Structure: Isometric (rarely visible in nuggets); Cleavage: None; Specific Gravity: 19.3 (pure)

Hardness: 2
Color: Golden-yellow, butter yellow
Luster: Metallic

Identified April 12, 2026More mineral →

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Physical properties

Hardness: 2.5–3 on Mohs scale; Color: Golden-yellow, butter yellow; Luster: Metallic; Crystal Structure: Isometric (rarely visible in nuggets); Cleavage: None; Specific Gravity: 19.3 (pure)

Formation & geological history

Formed in hydrothermal quartz veins via hot fluids in the Earth's crust, then eroded and concentrated in placer deposits through water action. Most often found in Archean or Cenozoic formations.

Uses & applications

Used as a store of value, in high-end jewelry, electronics, and investment portfolios.

Geological facts

Nuggets are never 100% pure gold; they usually contain 5% to 15% silver or copper. The presence of 'pitting' suggests it hasn't traveled far from its original vein source.

Field identification & locations

Identify by high density (it will feel much heavier than a pebble of the same size) and malleability (it dents rather than shatters when struck). Found in stream beds, river bends, and ancient alluvial fans.