pyrrhotite

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pyr·rho·tite

 (pĭr′ə-tīt′) also pyr·rho·tine (-tīn′)
n.
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. Also called magnetic pyrites.

[Alteration (influenced by -ite) of German Pyrrhotin, from Greek purrotēs, redness, from purros, fiery, from pūr, fire; see paəwr̥ in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

pyrrhotite

(ˈpɪrəˌtaɪt) or

pyrrhotine

n
(Minerals) a common bronze-coloured magnetic mineral consisting of ferrous sulphide in hexagonal crystalline form. Formula: FeS
[C19: from Greek purrhotēs redness, from purrhos fiery, from pur fire]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

pyr•rho•tite

(ˈpɪr əˌtaɪt)

n.
a bronze-colored magnetic mineral, iron sulfide, occurring in massive and in crystal forms.
[1868; < Greek pyrrhót(ēs) redness + -ite1]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pyrrhotite - a brownish iron sulfide mineral (FeS) having weak magnetic propertiespyrrhotite - a brownish iron sulfide mineral (FeS) having weak magnetic properties
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
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References in periodicals archive ?
During recent field programs surface outcrops were found to contain a nickel-bearing minerals pentlandite and phyrrotite (magnetic pyrite) which are often associated with nickel sulphides.