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

Gold Nugget

Native Gold (Au)

Hardness: 2.5-3 (Mohs). Color: Golden yellow to brassy. Luster: Metallic. Crystal structure: Isometric (though usually massive or dendritic). Cleavage: None. Specific Gravity: ~19.3 (very heavy).

Hardness
2
Color
Golden yellow to brassy
Luster
Metallic
Identified More mineral

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Physical properties

Hardness: 2.5-3 (Mohs). Color: Golden yellow to brassy. Luster: Metallic. Crystal structure: Isometric (though usually massive or dendritic). Cleavage: None. Specific Gravity: ~19.3 (very heavy).

Formation & geological history

Formed in hydrothermal quartz veins or as secondary deposits in riverbeds (placer deposits). It is an elemental mineral that can exist in rocks of various geological ages, often concentrated by erosion and water transport.

Uses & applications

Used in jewelry, electronics (conductive plating), dentistry, currency, and as a hedge against inflation. Highly valued by mineral collectors.

Geological facts

Gold is incredibly ductile; a single ounce can be stretched into a wire 50 miles long. Most gold found by hobbyists is in the form of small 'flour' gold or tiny flakes, making even a small nugget like this a significant find.

Field identification & locations

Identified by its high density (it won't move easily when swirled in a pan), its malleability (it dents rather than shatters), and its consistent color in shade versus sunlight. Commonly found in mountainous streams or historic mining districts.