columbite : Idioms & Phrases

Index

columbite-tantalite

  • noun a valuable black mineral combining niobite and tantalite; used in cell phones and computer chips
    coltan.
WordNet

yttro-columbite

Yt`tro-co*lum"bite, Yt`tro-tan"ta*lite noun (Also<
  • Yttro-columbite
  • Yttro-tantalite
)
Definitions
  1. (Min.) A tantalate of uranium, yttrium, and calcium, of a brown or black color.
Webster 1913