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phenacite

[ fen-uh-sahyt ]

noun

  1. a rare vitreous mineral, beryllium silicate, Be 2 SiO 4 , occurring in crystals, sometimes used as a gem.


phenacite

/ ˈfɛnəˌsaɪt; ˈfɛnəˌkaɪt /

noun

  1. a colourless or white glassy mineral consisting of beryllium silicate in hexagonal crystalline form: occurs in veins in granite. Formula: Be 2 SiO 4
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of phenacite1

1825–35; < Greek phenak- (stem of phénax ) a cheat, quack + -ite 1
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Word History and Origins

Origin of phenacite1

C19: from Greek phenax a cheat, because of its deceptive resemblance to quartz
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Example Sentences

The largest phenacite crystal ever found is owned by Mr. Whitman Cross.

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