coppernickel

from The Collaborative International Dictionary of English v.0.48

Niccolite \Nic"co*lite\, n. [from NL. niccolum nickel.] (Min.)
   A mineral of a copper-red color and metallic luster; an
   arsenide of nickel; -- called also {coppernickel},
   {kupfernickel}.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Copper-nickel \Cop"per-nick`el\, n. (Min.)
   Niccolite.
   [1913 Webster]