mineral
One Pound Coin (UK)
Nickel-Brass Alloy (Cu-Zn-Ni)
AI-generated identification · may be incorrectHardness: 3-4 Mohs; Color: Pale gold/yellow; Luster: Metallic; Structure: Cubic (metal lattice); Cleavage: None; Specific Gravity: Approx. 8.4-8.6
- Hardness
- 3-4 Mohs
- Color
- Pale gold/yellow
- Luster
- Metallic
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Physical properties
Hardness: 3-4 Mohs; Color: Pale gold/yellow; Luster: Metallic; Structure: Cubic (metal lattice); Cleavage: None; Specific Gravity: Approx. 8.4-8.6
Formation & geological history
Man-made industrial alloy; struck by the Royal Mint in 1991. Not a naturally occurring geological specimen.
Uses & applications
Currency/Legal tender in the United Kingdom (withdrawn from circulation in 2017).
Geological facts
This specific design features the portrait of Queen Elizabeth II. The 'round pound' was replaced in 2017 by a 12-sided bi-metallic coin to prevent counterfeiting.
Field identification & locations
Identified by the text 'ELIZABETH II', 'D.G.REG.F.D.', and the date '1991'. It is non-magnetic and features a milled edge with an incuse inscription.
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