Artificial intelligent assistant

calaverite

calaverite Min.
  (kəˈlævəraɪt)
  [f. Calaveras in California (where first found) + -ite.]
  A tellurid of gold, or of gold and silver, bronze-yellow, massive, and without crystalline structure.

1868 Dana Min. 795 (Supp.) Calaverite is frequently associated with petzite. 1874 Proc. Amer. Phil. Soc. XIV. 229 Calaverite..is associated with sylvanite and quartz.

Oxford English Dictionary

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