Willemite

       -  Color : White, Yellow, Green, Reddish brown, or Black
       -  Shape : prismatic-crystals shaped like slender prisms.
       -  Odor : None
       -  Fracture : uneven-Flat surfaces fractured in an uneven pattern
       -  Hardness : 5.5. Knife blade
       -  Luster : Vitreous-Resinous
       -  Streak :white
       -  Transparent to translucent to opaque.
       -  uses :A minor ore of zinc and as mineral specimens .
       -  Willemite is a Rhombohedral mineral.
       -  Associated mineral are Zincite, Franklinite, Rhodonite and Calcite

           By: Krysta Pike

For more informantion check out this site
THE MINERAL WILLEMITE