mineral
Gold
Gold (Au)
Hardness: 2.5 on the Mohs scale, Color: Golden yellow (can vary with silver or copper impurities), Luster: Metallic, Crystal Structure: Isometric (cubic), Cleavage: None (hackly fracture), Specific Gravity: 19.3
- Hardness
- 2
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Physical properties
Hardness: 2.5 on the Mohs scale, Color: Golden yellow (can vary with silver or copper impurities), Luster: Metallic, Crystal Structure: Isometric (cubic), Cleavage: None (hackly fracture), Specific Gravity: 19.3
Formation & geological history
Formed in hydrothermal veins, placers, and metamorphic environments through geological processes involving tectonic activity and hydrothermal fluids, often associated with quartz veins.
Uses & applications
Used primarily in fine jewelry, financial investment as bullion, electronics, dentistry, and aerospace applications.
Geological facts
Gold is extremely malleable and ductile; a single ounce can be drawn into a wire 50 miles long. It does not tarnish or corrode over time.
Field identification & locations
Can be identified by its distinctive yellow metallic luster, high density and weight compared to similar-sized objects, and softness. Found worldwide in alluvial placer deposits and lode mines.
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