mineral
Gold
Native gold (Au)
AI-generated identification · may be incorrectHardness: 2.5-3 (Mohs scale), Color: Golden yellow, Luster: Metallic, Crystal structure: Isometric/Cubic, Cleavage: None, Specific gravity: 19.3
- Hardness
- 2
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Physical properties
Hardness: 2.5-3 (Mohs scale), Color: Golden yellow, Luster: Metallic, Crystal structure: Isometric/Cubic, Cleavage: None, Specific gravity: 19.3
Formation & geological history
Formed in hydrothermal quartz veins, alluvial deposits (placers), and as an accessory mineral in igneous and metamorphic rocks. Often concentrated via volcanic activity or weathering.
Uses & applications
Primary use in jewelry, investment/bullion, electronics for its high conductivity and corrosion resistance, and dentistry.
Geological facts
Gold is one of the least reactive chemical elements and is solid under standard conditions. It often occurs in free elemental (native) form, as nuggets or grains, in rocks, in veins, and in alluvial deposits.
Field identification & locations
Identify by high density, extreme malleability (it bends rather than breaks), and the fact that it retains its yellow color even in shadow or different lighting. Found in regions with volcanic history or ancient stream beds.
