Gold Nugget

Physical Properties

Hardness: 2.5-3; Color: Golden yellow to brassy; Luster: Metallic; Crystal Structure: Isometric/Cubic (often dendritic or massive); Cleavage: None; Specific Gravity: 19.3

Formation & Geological History

Formed in hydrothermal quartz veins via cooling of mineral-rich hot fluids, or concentrated as placer deposits in river beds through erosion of primary sources over millions of years.

Uses & Applications

Financial standard, jewelry, electronics, dentistry, aerospace, and high-end investments.

Geological Facts

Gold is chemically inert, meaning it does not rust or tarnish. It is the most malleable and ductile metal known; a single gram can be beaten into a sheet one meter square.

Field Identification & Locations

Identify in the field by its malleability (it will bend or dent under pressure rather than shatter like pyrite) and its high density when panned. Common locations include California's Mother Lode, Alaska, and Australia.

Identified on: 5/8/2026

Mode: Standard