mineral
Silver Nugget
Native Silver (Ag)
AI-generated identification · may be incorrectHardness: 2.5-3 on the Mohs scale, Color: Silver-white on fresh surfaces but often tarnished dark grey or black, Luster: Metallic, Crystal Structure: Isometric, Cleavage: None (exhibits hackly fracture), Specific Gravity: 10.5
- Hardness
- 2
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Physical properties
Hardness: 2.5-3 on the Mohs scale, Color: Silver-white on fresh surfaces but often tarnished dark grey or black, Luster: Metallic, Crystal Structure: Isometric, Cleavage: None (exhibits hackly fracture), Specific Gravity: 10.5
Formation & geological history
Formed typically in hydrothermal veins, often associated with other metal sulfides and native elements, deposited from aqueous solutions at moderate to low temperatures.
Uses & applications
Used primarily in jewelry, silverware, electronics, coins, and industrial applications.
Geological facts
Native silver is relatively rare as most silver is extracted from sulfide ores like argentite and galena. Historically, major discoveries of native silver occurred in places like Kongsberg, Norway and Cobalt, Ontario.
Field identification & locations
Can be identified by its high density (heavy for its size), metallic luster, and characteristic tarnish. Found in hydrothermal vein deposits often associated with volcanic activity.
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