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{%type%} Definitions

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n. - A brownish iron sulfide mineral (FeS) having weak magnetic properties.

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Usage examples (32)
  • Like PAHs, these minerals -- mainly iron compounds called magnetite and pyrrhotite -- can come from inorganic sources.
  • Traces of arsenopyrite and pyrrhotite have also been recognised.
  • This horizon generally contains from 5 to 25% sulphides consisting mainly of pyrite and pyrrhotite.
  • Sphalerite, chalcopyrite and galena occur in varying amounts with pyrrhotite, pyrite and arsenopyrite.
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