Gold Nugget

Physical Properties

Hardness: 2.5-3 (Mohs scale), Color: Golden-yellow, Luster: Metallic, Crystal system: Isometric, Cleavage: None, Specific gravity: 19.3 (very high)

Formation & Geological History

Formed primarily in hydrothermal quartz veins or secondary alluvial deposits where it is concentrated by water action (placer deposits). Rocks containing gold can be of various geological ages.

Uses & Applications

Investment, jewelry, electronics, dentistry, and aerospace due to high conductivity and corrosion resistance.

Geological Facts

Gold is one of the most ductile and malleable metals; one ounce can be beaten into a sheet covering 100 square feet. It is physically soft but chemically almost indestructible.

Field Identification & Locations

Identified by its high density and malleability (it bends rather than shatters). Common in riverbeds, quartz veins, and historic mining districts in California, Alaska, and Australia.

Identified on: 5/7/2026

Mode: Standard