Gold Nugget

Native Gold (Au)

Rock Type: mineral

Gold Nugget

Physical Properties

Hardness: 2.5-3; Color: Golden-yellow; Luster: Metallic; Crystal Structure: Isometric; Cleavage: None; Specific Gravity: 19.3

Formation & Geological History

Formed in hydrothermal quartz veins via precipitation from hot, mineral-rich fluids. Often concentrated in sedimentary placer deposits through erosion of primary gold-bearing rocks.

Uses & Applications

Used in investment as bullion, jewelry, electronics due to high conductivity, and dentistry.

Geological Facts

Gold is one of the densest chemical elements. Most gold found by hobbyists is found in 'placer' deposits in stream beds where the heavy metal settles behind obstructions.

Field Identification & Locations

Identify by its high density, malleability (it bends rather than shatters), and yellow streak. Commonly found in California, Alaska, Australia, and South Africa.

Identified on: 5/8/2026

Mode: Standard