Meaning of cassiterite

cas•sit•er•ite

Pronunciation: (ku-sit'u-rīt"), [key]
— n.
  1. a brown or black mineral, tin dioxide, SnO, that crystallizes in the tetragonal system; tinstone: the principal ore of tin.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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