from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A yellowish-brown nickel iron sulfide that is the principal ore of nickel.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A mixed iron and nickel sulfide mineral, with the chemical formula (Fe,Ni)9S8; the major ore of nickel.

from The Century Dictionary and Cyclopedia

  • n. A sulphid of nickel and iron, occurring in massive forms of a light bronze-yellow color and metallic luster.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a mineral (iron and nickel sulphide) that is the chief ore of nickel


French, after Joseph Barclay Pentland (1797-1873), Irish scientist.
(American Heritage® Dictionary of the English Language, Fourth Edition)


  • Other nickel-bearing minerals, including millerite, heazlwoodite and pentlandite were also noted in composite grains.

    Marketwire - Breaking News Releases

  • The unit contains patchy recrystallised chalcopyrite-pyrite - (pyrrhotite) - pentlandite, occasionally as stringers, with up to 5% combined sulphides over several centimetres.

    The Earth Times Online Newspaper

  • Exploration at the Triangle Lake showing in the 1950s and 1960s exposed zones of massive to semi-massive magnetite and pyrite-pyrrhotite-chalcopyrite-pentlandite.

    The Earth Times Online Newspaper

  • Other conductors are located upstream of a pyroxenite-gabbro boulders weakly mineralized (pyrrhotite-pentlandite-chalcopyrite) that returned values of up to 0. 39% Ni and 0. 29% Cu.

    Marketwire - Breaking News Releases

  • Mineralization at Mathilda consists of disseminated and massive vein pyrrhotite, chalcopyrite, pyrite, pentlandite and trace molybdenite in sulphides hosted in a pyroxenite dyke.

    Marketwire - Breaking News Releases

  • The hole yielded disseminated and net-textured pyrrhotite, pentlandite and chalcopyrite intermittently within pyroxenite, over a core length of 28.8 metres.

    Marketwire - Breaking News Releases

  • (particularly pentlandite, but also millerite, niccolite, and others), which are found at Sudbury intergrown with the iron and copper sulphides, pyrrhotite and chalcopyrite; and the hydrated nickel-magnesium silicates (garnierite and genthite), which are products of weathering.

    The Economic Aspect of Geology

  • (pyrrhotite-pentlandite-chalcopyrite) that had graded up to 0. 67% Ni and 0. 74% Cu.

    Marketwire - Breaking News Releases

  • (pyrrhotite, chalcopyrite and pentlandite) that has been interpreted to be injected breccia veins or hydrothermally remobilized nickel bearing massive sulphides.

    Marketwire - Breaking News Releases


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