mineral

Silver (Native Element)

Ag (Native Silver), with minor Copper (Cu)

AI-generated identification · may be incorrect

Hardness: 2.5-3; Color: Silver-white (tarnishes black/grey); Luster: Metallic; Crystal Structure: Isometric; Cleavage: None; Specific Gravity: 10.5

Hardness: 2
Color: Silver-white (tarnishes black/grey)
Luster: Metallic

Identified March 15, 2026More mineral →

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Physical properties

Hardness: 2.5-3; Color: Silver-white (tarnishes black/grey); Luster: Metallic; Crystal Structure: Isometric; Cleavage: None; Specific Gravity: 10.5

Formation & geological history

Formed in hydrothermal veins and through the oxidation of silver-bearing ores. The specific specimen shown is a 1921 Morgan Silver Dollar composed of 90% silver and 10% copper alloy.

Uses & applications

Predominantly used as a medium of exchange (currency) historically; modernly used in electronics, solar panels, jewelry, and investment bullion.

Geological facts

The Morgan Dollar (1878-1921) was named after its designer, George T. Morgan. The 1921 issue was the final year of the design and remains the most common date for collectors due to high mintage.

Field identification & locations

Identified in the field by its high density, metallic luster, and sectility. For coins, look for the '1921' date and 38.1mm diameter. Found worldwide in major silver deposits (e.g., Comstock Lode, Potosí).