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Webster 1913 Edition

Noun.

[from NL.

niccolum

nickel.]

(Min.)

A mineral of a copper-red color and metallic luster; an arsenide of nickel; – called also

coppernickel

kupfernickel

niccolite ‎(countable and uncountable, plural niccolites)

(mineralogy) A mineral, a form of nickel arsenide, Ni As, having a metallic lustre and copper-red colour, that is a minor ore of nickel.