Calaverite n. : A bronze-yellow massive mineral with metallic luster; a telluride of gold; -- first found in Calaveras County California.

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Taxonomy
Calaverite, mineral, gold, free encyclopedia, tellurium, Occurrence, gold telluride, hardness, gold rush, Tellurides, search, chemical formula, gm, Brass, silver white, prisms, subconchoidal, Tenacity.

Defination from the web:
Calaverite occurrences include Cripple Creek, Colorado, Calaveras County, California, USA (from where it gets its name), Nagyag, Romania, ... In the Kalgoorlie gold rush of the 1890s, large amounts of calaverite were mistaken for fool's gold, and were discarded. ...