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[gree-nuh-kahyt] /ˈgri nəˌkaɪt/
a yellow mineral, cadmium sulfide, CdS, associated with zinc ores and used as a source of cadmium.
1840-45; named after Charles Cathcart, Lord Greenock (1807-43), Englishman who discovered it; see -ite1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for greenockite


a rare yellowish mineral consisting of cadmium sulphide in hexagonal crystalline form: the only ore of cadmium. Formula: CdS
Word Origin
C19: named after Lord C. C. Greenock, 19th-century English soldier
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Encyclopedia Article for 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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