greenockite

greenockite

[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

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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]

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Encyclopedia Britannica
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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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