phengite

noun phen·gite \ˈfenˌjīt\

Definition of phengite

plural

-s

  1. 1 :  a transparent or translucent stone probably selenite or crystallized gypsum used by the ancients for windows

  2. 2 :  a variety of muscovite with substitution of aluminum for magnesium and silicon

phengitic

\(ˈ)fen¦jitik\ adjective

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Origin and Etymology of phengite

German phengit, from Latin phengites, from Greek, from phengos light, moonlight + -itēs -ite


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