Chemistry:Zhanghengite

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Zhanghengite
Zhanghengite.jpg
The rare intermetallide Zhanghengite, CuZn, discovered in meteorites, become available now from an old Vietnamese collection. The mineral has nice light-yellow gold-like color and is well visible by unequipped eye.
General
CategoryNative element mineral
Formula
(repeating unit)
CuZn
Strunz classification1.AB.10a
Crystal systemIsometric
Crystal classHexoctahedral (m3m)
H-M symbol: (4/m 3 2/m)
Space groupIm3m
Unit cella = 2.95 Å; Z = 1
Identification
ColorGolden yellow
CleavageNone
Mohs scale hardness3.5
|re|er}}Metallic
Streakbronze
DiaphaneityOpaque
Specific gravity3.92
Ultraviolet fluorescenceNon-fluorescent
References[1][2]

Zhanghengite is a mineral consisting of 80% copper and zinc, 10% iron with the balance made up of chromium and aluminium. Its color is golden yellow. It was discovered in 1986 during the analysis of the Bo Xian meteorite and is named after Zhang Heng, an ancient Chinese astronomer.

See also

References