Pyrrhotite definition

-tīn
A brownish-bronze iron sulfide mineral, FeS, characterized by weak magnetic properties and used as an iron ore and in the manufacture of sulfuric acid.
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A bronze-colored, typically magnetic, hexagonal mineral, Fex-1Sx, usually found with pentlandite; iron sulfide.
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(mineralogy) A weakly magnetic ferrous sulfide mineral, FeS.
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Other Word Forms

Noun

Singular:
pyrrhotite
Plural:
pyrrhotites

Origin of pyrrhotite

  • Alteration (influenced by –ite) of German Pyrrhotin from Greek purrotēs redness from purros fiery from pūr fire paəwr̥ in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

Pyrrhotite Sentence Examples

  • Prospect, at the base of which there is a vein of pyrrhotite, with small quantities of nickel and copper.

  • Magnetic pyrites or pyrrhotite has a composition varying between Fe7S8 and Fe8S9, i.e.

  • In the Bay Complex narrow zones of bleached rock are rich in calcite, chlorite and pyrite and contain minor chalcopyrite and pyrrhotite.

  • Other minerals present include diopside, pargasite, spinel, phlogopite, apatite, graphite, pyrrhotite and zircon (Davidson 1943 ).

  • The sulfide minerals recorded from the lodes comprise pyrite, pyrrhotite, chalcopyrite, galena, sphalerite and arsenopyrite.

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