phenacite


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Related to phenacite: Petalite

phen·a·cite

 (fĕn′ə-sīt′) or phen·a·kite (-kīt′)
n.
A natural beryllium silicate, Be2SiO4, occurring as vitreous crystals sometimes used as gems.

[Greek phenāx, phenāk-, impostor + -ite.]

phenacite

(ˈfɛnəˌsaɪt) or

phenakite

n
(Minerals) a colourless or white glassy mineral consisting of beryllium silicate in hexagonal crystalline form: occurs in veins in granite. Formula: Be2SiO4
[C19: from Greek phenax a cheat, because of its deceptive resemblance to quartz]
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References in periodicals archive ?
Foster occurs in miarolitic cavities containing gem-quality fluorite, microcline, phenacite ([Be.