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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.


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1844 - MILLERITES In the early 19th century, New York landowner William Miller became obsessed with religious prophecies and symbolisms related to the calendar.
1844 - MILLERITES In the early 19th century New York landowner William Miller became obsessed with religious prophecies and symbolisms related to the calendar.
The narrative interludes about her father's book, too, especially the passages about the Millerites (a nineteenth-century mil-lennialist Christian sect), make for a strong intellectual framework while effectively evoking our pitiful attempts to struggle with death.
 
 
 
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