Source : Webster's Revised Unabridged Dictionary (1913)

Strontianite \Stron"ti*an*ite\, n. (Min.)
   Strontium carbonate, a mineral of a white, greenish, or
   yellowish color, usually occurring in fibrous massive forms,
   but sometimes in prismatic crystals.

Source : WordNet®

strontianite
     n : a mineral consisting of strontium carbonate