Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A yellowish-brown nickel iron sulfide that is the principal ore of nickel.
from The Century Dictionary.
- noun A sulphid of nickel and iron, occurring in massive forms of a light bronze-yellow color and metallic luster.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun mineralogy A mixed
iron andnickel sulfide mineral , with thechemical formula (Fe ,Ni )9S 8; the majorore of nickel.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a mineral (iron and nickel sulphide) that is the chief ore of nickel
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
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Examples
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The unit contains patchy recrystallised chalcopyrite-pyrite - (pyrrhotite) - pentlandite, occasionally as stringers, with up to 5% combined sulphides over several centimetres.
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The unit contains patchy recrystallised chalcopyrite-pyrite - (pyrrhotite) - pentlandite, occasionally as stringers, with up to 5% combined sulphides over several centimetres.
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Other nickel-bearing minerals, including millerite, heazlwoodite and pentlandite were also noted in composite grains.
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Exploration at the Triangle Lake showing in the 1950s and 1960s exposed zones of massive to semi-massive magnetite and pyrite-pyrrhotite-chalcopyrite-pentlandite.
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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.
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Mineralization at Mathilda consists of disseminated and massive vein pyrrhotite, chalcopyrite, pyrite, pentlandite and trace molybdenite in sulphides hosted in a pyroxenite dyke.
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Mineralization at Mathilda consists of disseminated and massive vein pyrrhotite, chalcopyrite, pyrite, pentlandite and trace molybdenite in sulphides hosted in a pyroxenite dyke.
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The hole yielded disseminated and net-textured pyrrhotite, pentlandite and chalcopyrite intermittently within pyroxenite, over a core length of 28.8 metres.
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(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.
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(pyrrhotite-pentlandite-chalcopyrite) that had graded up to 0. 67% Ni and 0. 74% Cu.
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