mineral
Gold
Gold (Au)
AI-generated identification · may be incorrectMohs hardness 2.5-3, rich yellow color, metallic luster, cubic crystal system, highly malleable and ductile, specific gravity 19.3.
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Physical properties
Mohs hardness 2.5-3, rich yellow color, metallic luster, cubic crystal system, highly malleable and ductile, specific gravity 19.3.
Formation & geological history
Formed in hydrothermal veins and placer deposits through precipitation from hot mineralized fluids, often associated with quartz.
Uses & applications
Used extensively in jewelry, electronics, investment bullion, and dentistry.
Geological facts
Gold is so malleable a single ounce can be beaten into a sheet covering 300 square feet, and it does not tarnish or corrode over time.
Field identification & locations
Easily identified by its bright yellow color, high density, and lack of reactivity to acids; found worldwide in alluvial stream beds and lode deposits.
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