Gold Nugget

Physical Properties

Hardness: 2.5-3 (Mohs scale), Color: Golden yellow, Luster: Metallic, Crystal Structure: Cubic, Cleavage: None, Specific Gravity: 19.3 (very high)

Formation & Geological History

Found in hydrothermal quartz veins or as secondary deposits (alluvial/placer) in riverbeds where erosion has concentrated the heavy metal. Formation occurs via precipitation from superheated fluids in the Earth's crust.

Uses & Applications

Financial standard, jewelry, high-end electronics, dentistry, and aerospace due to its conductivity and resistance to corrosion.

Geological Facts

Gold is incredibly malleable; a single ounce can be beaten into a sheet covering 100 square feet. Most gold found in nature is alloyed with small amounts of silver (electrum).

Field Identification & Locations

Identify in the field by its weight (extremely heavy for its size), lack of cleavage, and malleability (it dents or flattens under pressure rather than shattering like Pyrite).

Identified on: 5/8/2026

Mode: Standard