mineral
Gold
Gold (Au)
AI-generated identification · may be incorrectMohs hardness of 2.5 to 3, golden yellow color, metallic luster, isometric crystal system, high specific gravity of 19.3.
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Physical properties
Mohs hardness of 2.5 to 3, golden yellow color, metallic luster, isometric crystal system, high specific gravity of 19.3.
Formation & geological history
Formed in hydrothermal veins and placer deposits through precipitation from hot mineralizing fluids associated with magmatic activity.
Uses & applications
Used extensively in jewelry, electronics, investment bullion, and monetary reserves.
Geological facts
Gold is extremely ductile and malleable; a single gram can be drawn into a wire one kilometer long or beaten into a thin sheet.
Field identification & locations
Identified by its high density, softness, and distinct yellow color that does not tarnish; found worldwide in quartz veins and stream beds.
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