auricupride
Sign in to saveAuricupride is a natural alloy that combines copper and gold. Its chemical formula is Cu3Au. The alloy crystallizes in the cubic crystal system in the L12 structure type and occurs as malleable grains or platey masses. It is an opaque yellow with a reddish tint. It has a hardness of 3.5 and a specific gravity of 11.5.
Key facts
- Mineral.name
- Auricupride
- Mineral.image
- Auricupride-133536.jpg
- Mineral.caption
- Auricupride
- Mineral.category
- Native elements
- Mineral.formula
- Cu3Au
- Mineral.IMAsymbol
- Auc
- Mineral.molweight
- 387.60 g/mol
- Mineral.strunz
- 1.AA.10a
- Mineral.dana
- 1.1.2.1
- Mineral.system
- Cubic
- Mineral.class
- Hexoctahedral (mm) H-M symbol: (4/m 2/m)
- Mineral.symmetry
- Pmm
- Mineral.color
- Yellow with reddish tint
- Mineral.fracture
- Malleable
- Mineral.luster
- Metallic
- Mineral.streak
- yellow
- Mineral.diaphaneity
- Opaque
- Mineral.fluorescence
- Non-fluorescent
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Auricupride is a natural alloy that combines copper and gold. Its chemical formula is Cu3Au. The alloy crystallizes in the cubic crystal system in the L12 structure type and occurs as malleable grains or platey masses. It is an opaque yellow with a reddish tint. It has a hardness of 3.5 and a specific gravity of 11.5.
A variant called tetra-auricupride (CuAu) exists. Silver may be present resulting in the variety argentocuproauride ().
Excerpted from Wikipedia’s “auricupride” article, available under the CC BY-SA 4.0 licence.