mineral
Gold
Gold (Au)
AI-generated identification · may be incorrectHardness: 2.5-3 on the Mohs scale. Color: bright yellow. Luster: metallic. Crystal structure: isometric-hexoctahedral. Specific gravity: very high at 19.3.
- Hardness
- 2
- Color
- bright yellow
- Luster
- metallic
Identified More mineral →
Explore Gold in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 2.5-3 on the Mohs scale. Color: bright yellow. Luster: metallic. Crystal structure: isometric-hexoctahedral. Specific gravity: very high at 19.3.
Formation & geological history
Formed in hydrothermal veins and placer deposits through precipitation from hot fluids, often associated with quartz.
Uses & applications
Used extensively in jewelry, electronics, investment bullion, and dentistry.
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
Identified by its heavy weight, yellow metallic color, and resistance to acid. Commonly panned in rivers and streams.
