millerite

mil·ler·ite

M0300900 (mĭl′ə-rīt′)n. A nickel sulfide mineral, NiS, usually occurring in long hairlike crystals and sometimes used as a nickel ore.

[After William Hallowes Miller (1801-1880), British mineralogist.]

millerite

(ˈmɪləˌraɪt) n (Minerals) a yellow mineral consisting of nickel sulphide in hexagonal crystalline form: a minor ore of nickel. Formula: NiS[C19: named after W. H. Miller (1801–80), English mineralogist]

Mil•ler•ite

(ˈmɪl əˌraɪt)

n. a follower of William Miller, a U.S. preacher who taught that the Second Advent of Christ was imminent. [1835–45]

Thesaurus

Noun

millerite - a yellow mineral consisting of nickel sulfide; a minor source 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

Millerite

enUK

millerite

[′mil·ə‚rīt] (mineralogy) NiS A brass to bronze-yellow mineral that crystallizes in the hexagonal system and usually contains trace amounts of cobalt, copper, and iron; hardness is 3-3.5 on Mohs scale, and specific gravity is 5.5; it generally occurs in fine crystals, chiefly as nodules in clay ironstone. Also known as capillary pyrites; hair pyrites; nickel pyrites.

Millerite

(named after the British crystallographer W. Miller [1801–80]), a mineral of the sulfide class; nickel sulfide, NiS, containing 64.7 percent Ni and 35.3 percent S. Millerite crystallizes in the trigonal system, forming characteristic slender brass-yellow hairlike crystals. It also forms fibrous, radiating, and other kinds of aggregates. Millerite has a hardness of 3–4 on Mohs’ scale and a density of 5,200–5,600 kg/m³. It occurs rarely in nature, usually in hydrothermal ore veins in association with other Ni and Co sulfides and arsenides, which are contained in copper-nickel ores (in Noril’sk and Monchegorsk in the USSR). Millerite is also formed during the sur-face weathering of nickel-bearing ultrabasic rocks by acidic surface waters saturated with H₂S.

REFERENCE

Mineraly: Spravochnik, vol. 1. Moscow, 1960.

millerite

mil·ler·ite

millerite

Mil•ler•ite

Millerite

millerite

Millerite

REFERENCE

millerite

Words related to millerite

noun a yellow mineral consisting of nickel sulfide

Related Words