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Purple gold is a strange thing indeed. It is composed of gold and aluminum, but it's not an alloy. It is instead a compound of definite proportions. Known as an intermetallic compound, the bond between gold and aluminum atoms is weakly ionic.
Source: Max Whitby of RGB
Contributor: Max Whitby of RGB
Acquired: 24 March, 2009
Text Updated: 24 March, 2009