cohenite

[koh-uh-nahyt]

co·hen·ite

[koh-uh-nahyt]
noun
a rare microscopic mineral, carbide of iron, nickel, or cobalt, (Fe, Ni, Co)3C, found in lunar rocks and some meteorites.

Origin:
named after E. W. Cohen, 19th-century German mineralogist; see -ite1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Cohenite is always a great word to know.
So is interrobang. Does it mean:
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
Encyclopedia Britannica
Encyclopedia

cohenite

an iron nickel carbide mineral [(Fe,Ni)3C] that occurs as an accessory constituent of iron meteorites, including all coarse octahedrites containing 7 percent nickel or less, and that is a rare constituent of some chondritic stony meteorites and micrometeorites. Another iron nickel carbide, haxonite [(Fe,Ni)23C6], also occurs in these meteorites. Cohenite closely resembles another meteoritic mineral, schreibersite, and it may be more common in meteorites than is supposed. When manufactured on Earth, as in steel, it is called cementite. For detailed physical properties, see native element (table)

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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