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Etymology edit

From Latin phengites, from Ancient Greek [Term?]. Doublet of fengite.

Pronunciation edit

Noun edit

phengite (countable and uncountable, plural phengites)

  1. (mineralogy) Any of a series of dioctahedral micas of composition K(AlMg)2(OH)2(SiAl)4O10, similar to muscovite but with addition of magnesium.