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Meaning of willemite

wil•lem•ite

Pronunciation: (wil'u-mīt"), [key]
— n.
  1. a mineral, a zinc silicate, ZnSiO, sometimes containing manganese, occurring in prismatic crystals or granular masses, usually greenish, sometimes white, brown, or red: a minor ore of zinc.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.