Dictionary  pyr•rho•titePronunciation: (pir'u-tīt"), [key] —n. a common mineral, iron sulfide, approximately FeS but variable because of a partial absence of ferrous ions, occurring in massive and in crystal forms with a bronze color and metallic luster; magnetic pyrites: generally slightly magnetic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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