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[pent-luh n-dahyt] /ˈpɛnt lənˌdaɪt/
a mineral, sulfide of nickel, occurring in the form of bronze-colored granular aggregates, found with pyrrhotite: the principal source of nickel.
1855-60; < French; named after Joseph B. Pentland (died 1873), Irish scientist; see -ite1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for pentlandite
  • The economic minerals are predominately pentlandite and chalcopyrite.
British Dictionary definitions for pentlandite


a brownish-yellow mineral consisting of an iron and nickel sulphide in cubic crystalline form: the principal ore of nickel. Formula: (Fe,Ni)S
Word Origin
C19: from French; named after J. B. Pentland (1797–1873), Irish scientist who discovered it
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Encyclopedia Article for pentlandite

a nickel and iron sulfide mineral, the chief source of nickel. It is nearly always found with pyrrhotite and similar minerals in silica-poor rocks such as those at Bushveld, S.Af.; Bodo, Nor.; and Sudbury, Ont., Can. It has also been found in meteorites. Pentlandite forms crystals that have isometric symmetry. For chemical formula and detailed physical properties, see sulfide mineral (table)

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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