'Cobaltite' definitions:

Definition of 'cobaltite'

(from WordNet)
noun
A rare silvery-white mineral; important ore of cobalt

Definition of 'Cobaltite'

From: GCIDE
  • Cobaltine \Co"balt*ine\, Cobaltite \Co"balt*ite\n. (Min.) A mineral of a nearly silver-white color, composed of arsenic, sulphur, and cobalt. [1913 Webster]