
mineral
Native gold nugget or flake
Native gold (Au), possibly with minor silver/electrum
AI-generated identification · may be incorrectTiny irregular metallic yellow-gold specimen with bright metallic luster; gold is very soft (Mohs 2.5–3), highly malleable, ductile, and dense (specific gravity about 19.3). Crystal form is rarely visible in natural nuggets; cleavage is absent.
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Physical properties
Tiny irregular metallic yellow-gold specimen with bright metallic luster; gold is very soft (Mohs 2.5–3), highly malleable, ductile, and dense (specific gravity about 19.3). Crystal form is rarely visible in natural nuggets; cleavage is absent.
Formation & geological history
Forms hydrothermally in quartz veins and as placer gold released by weathering and concentrated in stream sediments. Most natural gold spans broad geological ages, commonly Precambrian to younger hydrothermal deposits.
Uses & applications
Used primarily in jewelry, electronics, dentistry, and investment; small natural nuggets are collected as mineral specimens. Value depends mainly on mass and purity.
Geological facts
The image appears consistent with native gold, but its extremely small size and uncertain context prevent confirmation; brass-colored pyrite or gold-colored metal are possible alternatives.
Field identification & locations
Field tests include a streak test (gold leaves a yellow streak), malleability rather than brittle fracture, and very high density; avoid destructive testing on a tiny specimen. Common sources include Australia, Alaska, California, Canada, and South Africa.
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