pyrrhotite

pyrrhotite

[pir-uh-tahyt]
noun
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.

Origin:
1868; < Greek pyrrhót(ēs) redness + -ite1

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World English Dictionary
pyrrhotite or pyrrhotine (ˈpɪrəˌtaɪt, ˈpɪrəˌtiːn, -ˌtaɪn, -tɪn)
 
n
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]
 
pyrrhotine or pyrrhotine
 
n
 
[C19: from Greek purrhotēs redness, from purrhos fiery, from pur fire]

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