mineral

Gold

Gold (Native Element); Au

Hardness: 2.5–3 on Mohs scale; Color: Metallic yellow; Luster: Metallic; Crystal Structure: Isometric (Cubic); Cleavage: None; Specific Gravity: 19.3 (very high)

Hardness: 2
Color: Metallic yellow
Luster: Metallic

Identified March 8, 2026More mineral →

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Physical properties

Hardness: 2.5–3 on Mohs scale; Color: Metallic yellow; Luster: Metallic; Crystal Structure: Isometric (Cubic); Cleavage: None; Specific Gravity: 19.3 (very high)

Formation & geological history

Primary deposits form in hydrothermal veins related to igneous intrusions; secondary 'placer' deposits form in riverbeds through the erosion and concentration of primary deposits over millions of years.

Uses & applications

Primary use is in jewelry, investment/financial reserves (coins and bullion), and industrial electronics due to its excellent conductivity and corrosion resistance.

Geological facts

Gold is incredibly ductile; a single ounce can be drawn into a wire over 50 miles long. Most of the gold found on Earth's surface originated from meteorite bombardments after the planet's formation.

Field identification & locations

Identify in the field by its extreme density (heavy for its size), high malleability (it bends/dents rather than shatters), and persistent yellow color even in shade. Commonly found in quartz veins and alluvial river gravels.