Millerite


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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.
References in periodicals archive ?
Afterwards, many Millerites were devastated and left their faith.
2) Dixon Wecter tells the story of Mark Twain's return to Hannibal in 1902, quoting the writer's typically wry delivery: "There is where the Millerites put on their robes one night to go up to heaven.
This is a possible reference to the leading Millerite preacher, Charles Fitch, who was also an abolitionist and convert to "Oberlin perfection," but my research on Millerism uncovered no record of a visit by him to the Eastern Townships.
Included here are evangelicals for whom faith led to social reform as well as those, from the Millerites, Shakers, and Oneida community to individuals like Sojourner Truth, whose rather different religious understandings offered alternatives to how to organize society.
The Levack Footwall Deposit massive sulphides veins, like other footwall deposits along the North Range of the Sudbury Basin, vary from 1 ft to 20 ft in thickness and consist of chalcopyrite, cubanite, pentlandite and millerite with high-grade precious metal values.
In warning his followers against Millerite date-setting in 1843, Smith prophesied that "the son of man will not come in the clouds of heaven till I am eighty-five years old.
Its mineralization and characteristics are very similar to typical Sudbury Basin footwall deposits which vary in thickness from several feet to tens of feet and are characterized by high grades and sharp-walled, massive sulfide veins consisting of chalcopyrite, cubanite, pentlandite and millerite.
In warning his followers in 1843 against Millerite date-setting, Smith prophesied that "the son of man will not come in the clouds of heaven till I am eighty-five years old.
Two massive sulfide veins were intersected in FNX hole 6010 containing chalcopyrite, cubanite, pendlandite and millerite.
Two massive sulfide veins consisting of chalcopyrite, cubanite, pentlandite and millerite were intersected approximately 3,900 ft vertically below surface.
The PM mineralization consists of Pt-Pd-Au enriched massive to stringer to disseminated sulphides dominated by chalcopyrite with lesser amounts of pyrrhotite, pyrite and millerite.
The main sulphides include chalcopyrite, millerite, pyrrhotite, pentlandite and pyrite.