mineral
Gold
Native Gold (Au)
AI-generated identification · may be incorrectHardness: 2.5-3; Color: Golden yellow to brassy; Luster: Metallic; Structure: Isometric; Cleavage: None; Specific Gravity: 19.3 (very heavy)
- 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; Structure: Isometric; Cleavage: None; Specific Gravity: 19.3 (very heavy)
Formation & geological history
Formed in hydrothermal quartz veins and as placer deposits in riverbeds. The location (near Yuba City, CA) is in the heart of the historic Mother Lode region.
Uses & applications
Used for currency, electronics, jewelry, and dental work. High value for investment and collecting.
Geological facts
This specimen displays a hackly fracture and metallic luster typical of native gold. The region 39.1N, 121.6W is famous for the California Gold Rush.
Field identification & locations
Identified by high density, extreme malleability, and golden streak. Check riverbeds and quartz outcrops in the Sierra Nevada foothills.
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