phengite
English edit
Etymology edit
From Latin phengites, from Ancient Greek [Term?]. Doublet of fengite.
Pronunciation edit
Noun edit
phengite (countable and uncountable, plural phengites)
- (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.