Rock Identifier
Native Gold Nugget (Gold (Au)) — mineral
mineral

Native Gold Nugget

Gold (Au)

Mohs hardness: 2.5-3; Color: Golden-yellow, bright yellow to pale yellow; Luster: Metallic; Crystal structure: Isometric (cubic); Cleavage: None (hackly fracture); Specific gravity: 19.3 (very heavy)

Hardness
2
Color
Golden-yellow, bright yellow to pale yellow
Luster
Metallic
Identified More mineral
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Physical properties

Mohs hardness: 2.5-3; Color: Golden-yellow, bright yellow to pale yellow; Luster: Metallic; Crystal structure: Isometric (cubic); Cleavage: None (hackly fracture); Specific gravity: 19.3 (very heavy)

Formation & geological history

Formed through hydrothermal veins associated with igneous intrusions or as placer deposits in rivers and streams, often dating from the Precambrian to Cenozoic eras.

Uses & applications

Used in fine jewelry, electronics, monetary reserves, and investment-grade bullion.

Geological facts

Gold is extremely malleable and ductile; a single gram can be drawn into a wire one kilometer long. The region near the provided coordinates in Sudan/Ethiopia borderlands contains significant alluvial gold deposits.

Field identification & locations

Found in stream beds and alluvial gravels. Easily identified by its high density, softness (can be scratched with a copper coin), and resistance to tarnishing or acids.