mineral
Gold Nugget
Native Gold (Au)
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
- Hardness
- 2
- Color
- Golden yellow to brassy
- Luster
- Metallic
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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.
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