mineral
Native gold (gold nugget)
Native gold, Au; commonly alloyed with silver and copper
AI-generated identification · may be incorrectSmall irregular metallic fragment with yellow-gold color and bright luster. Mohs hardness 2.5–3; cubic crystal system, though nuggets are commonly rounded or irregular and lack visible crystal faces; specific gravity about 15–19.
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Physical properties
Small irregular metallic fragment with yellow-gold color and bright luster. Mohs hardness 2.5–3; cubic crystal system, though nuggets are commonly rounded or irregular and lack visible crystal faces; specific gravity about 15–19.
Formation & geological history
Forms as native metal in hydrothermal quartz veins and related deposits, then can weather out and accumulate in stream gravels. The image alone does not indicate its geological age or source.
Uses & applications
Used for jewelry, investment, electronics, and dental applications; natural nuggets are also collected.
Geological facts
Gold is exceptionally dense, malleable, and resistant to corrosion; silver content can make natural gold paler.
Field identification & locations
The color and irregular nugget-like shape suggest gold, but the photo cannot confirm identity; a density, streak, or professional assay test is needed. Gold occurs worldwide, especially in placer deposits and quartz-vein districts.
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