greenockite

[gree-nuh-kahyt]

green·ock·ite

[gree-nuh-kahyt]
noun
a yellow mineral, cadmium sulfide, CdS, associated with zinc ores and used as a source of cadmium.

Origin:
1840–45; named after Charles Cathcart, Lord Greenock (1807–43), Englishman who discovered it; see -ite1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Greenockite is always a great word to know.
So is quincunx. Does it mean:
a chattering or flighty, light-headed person.
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
Collins
World English Dictionary
greenockite (ˈɡriːnəˌkaɪt)
 
n
a rare yellowish mineral consisting of cadmium sulphide in hexagonal crystalline form: the only ore of cadmium. Formula: CdS
 
[C19: named after Lord C. C. Greenock, 19th-century English soldier]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Encyclopedia Britannica
Encyclopedia

greenockite

cadmium sulfide (CdS), the only mineral containing an appreciable amount of cadmium. It forms coatings on sphalerite and other zinc minerals. It forms yellow, orange, or deep red crystals that belong to the hexagonal system. Typical occurrences are Pribram, Czech Republic; Renfrew, Scot.; and Joplin, Mo., U.S. For detailed physical properties, see sulfide mineral (table)

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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