Sylvanite

From Sacaramb (Nagyag), Hunedoara Co., Romania

Sylvanite
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Article codeII.D.1620.002

Thumbnail 20x15 mm - Sylvanite is a gold and silver telluride mineral.
A silver-white to steel-gray rare mineral with a  metallic luster.
Everybody knows pure gold, but gold also occurs in compounds of gold and/or silver with tellurium. The tellurides, calaverite and sylvanite are mined for their gold content.