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单词 pentlandite
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pentlandite


pent·land·ite

P0173900 (pĕnt′lən-dīt′)n. A yellowish-brown nickel iron sulfide that is the principal ore of nickel.
[French, after Joseph Barclay Pentland (1797-1873), Irish scientist.]

pentlandite

(ˈpɛntlənˌdaɪt) n (Minerals) a brownish-yellow mineral consisting of an iron and nickel sulphide in cubic crystalline form: the principal ore of nickel. Formula: (Fe,Ni)S[C19: from French; named after J. B. Pentland (1797–1873), Irish scientist who discovered it]

pent•land•ite

(ˈpɛnt lənˌdaɪt)

n. a mineral, iron-nickel sulfide, (FeNi)9S8, occurring in the form of bronze-colored granular aggregates: the principal source of nickel. [1855–60; < French; after Joseph B. Pentland (d. 1873), Irish scientist; see -ite1]
Thesaurus
Noun1.pentlandite - a mineral (iron and nickel sulphide) that is the chief ore of nickelatomic number 28, Ni, nickel - a hard malleable ductile silvery metallic element that is resistant to corrosion; used in alloys; occurs in pentlandite and smaltite and garnierite and milleritemineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition

pentlandite


pentlandite

(pĕnt`ləndīt), yellowish-bronze, opaque mineral, a sulfide of iron and nickel, (Fe,Ni)9S8. It is found in masses nearly always associated with the iron sulfide pyrrhotite. The largest deposit of this important ore of nickel is at Sudbury, Ont. Important deposits are mined in Manitoba, Russia, and W Australia.

Pentlandite

 

(named after the British traveler J. Pentland [1797–1873], who first discovered the mineral), a nickel-iron pyrite; a mineral with the chemical composition (Fe, Ni)9S8. It contains, by weight, 32.55 percent Fe, 34.22 percent Ni, and 32.23 percent S. It also generally contains a 3-percent admixture of Co. A variety of pentlandite containing up to 49 percent Co is known as cobalt pentlandite.

Pentlandite crystallizes in the isometric system and exhibits octahedral parting. The crystal lattice is composed of eight tetrahedrons with common edges; four tetrahedrons contain Fe2+ ions, and the remaining four contain Ni2+ ions. Similar groups are, in turn, bonded at common apices and arranged at the corners of the face-centered cubic lattice. The ions Fe2+ and Ni2+, occurring in octahedral coordination relative to the S ions, are located between the tetrahedral groups.

Pentlandite has a metallic luster, a light bronze-yellow color, a hardness on Mohs’ scale of 3–4, and a density of 4,500–5,185 kg/m3. It occurs in the form of massive or granular aggregates in sulfide-ore deposits genetically associated with basic and ultrabasic igneous rocks, such as gabbro-norites and pyroxenites. Pentlandite is one of the principal minerals of nickel ores.

pentlandite

[′pent·lən‚dīt] (mineralogy) (Fe,Ni)9S8 A yellowish-bronze mineral having a metallic luster and crystallizing in the isometric system; hardness is 3.5-4 on Mohs scale, and specific gravity is 4.6-5.0; the major ore of nickel.

pentlandite


Related to pentlandite: garnierite, pyrrhotite
  • noun

Words related to pentlandite

noun a mineral (iron and nickel sulphide) that is the chief ore of nickel

Related Words

  • atomic number 28
  • Ni
  • nickel
  • mineral
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更新时间:2025/2/24 3:14:17