Several sulphide ores display a distinct, deceptive metallic, yellow-gold luster. Due to this characteristic visual property, both Iron pyrites () and Copper pyrites () are historically referred to by

Question

Several sulphide ores display a distinct, deceptive metallic, yellow-gold luster. Due to this characteristic visual property, both Iron pyrites ($FeS_2$) and Copper pyrites ($CuFeS_2$) are historically referred to by which common colloquial name?

Prashant Kotian · Accepted Answer

Correct answer: B. Both Iron pyrites () and Copper pyrites () have a brassy, pale-yellow color with a metallic luster that superficially resembles real gold. Because of this misleading appearance, they have been historically termed "Fool's gold".

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