Source : Webster's Revised Unabridged Dictionary (1913)

Scheelite \Scheel"ite\, n. [From C.W. Scheele, a Swedish
   chemist.] (Min.)
   Calcium tungstate, a mineral of a white or pale yellowish
   color and of the tetragonal system of crystallization.

Source : WordNet®

scheelite
     n : a mineral used as an ore of tungsten