Auricupride
Wikipedia on Answers.com:
Top
Auricupride
| Auricupride | |
|---|---|
 Auricupride |
|
| General | |
| Category | Native elements |
| Chemical formula | Cu3Au |
| Strunz classification | 01.AA.10a |
| Dana classification | 1.1.2.1 |
| Identification | |
| Molar mass | 387.60 gm |
| Color | Yellow with reddish tint |
| Crystal system | Orthorhombic |
| Fracture | Malleable |
| Mohs scale hardness | 3½ |
| Luster | Metallic |
| Streak | yellow |
| Diaphaneity | Opaque |
| Ultraviolet fluorescence | Non-fluorescent |
Auricupride is a natural alloy that combines copper and gold. Its chemical formula is Cu3Au. The alloy crystallizes in the Cubic crystal system 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.[1]
A variant called tetra-auricupride (CuAu) exists. Silver may be present resulting in the variety argentocuproauride (Cu3(Au,Ag)).[2]
It was first described in 1950 for an occurrence in the Ural Mountains Russia. It occurs as low temperature unmixing product in serpentinites and as reduction "halos" in redbed deposits. It is most often found in Chile, Argentina, Tasmania, Russia, Cyprus, Switzerland and South Africa.[1][2]
References
External links
 |
Wikimedia Commons has media related to: Auricupride |
 |
This article about a specific mineral or mineraloid is a stub. You can help Wikipedia by expanding it. |
 |
This alloy–related article is a stub. You can help Wikipedia by expanding it. |
This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)
Post a question - any question - to the WikiAnswers community:
Copyrights:
Wikipedia on Answers.com
This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article Auricupride.
Read more