• Muscovite

    Origin

    In 1850 from Muscovy glass + -ite, from the province Muscovy in Russia. Named by James Dwight Dana.

    Richard V. Gaines, H. Catherine W. Skinner, Eugene E. Foord, Brian Mason, and Abraham Rosenzweig: Dana's new mineralogy, John Wiley & Sons, 1997

    Full definition of muscovite

    Noun

    muscovite

    (countable and uncountable; plural muscovites)
    1. (mineralogy) A pale brown mineral of the mica group, being a basic potassium aluminosilicate with the chemical formula KAl2(Si3Al)O10(OH,F)2
    used as an electrical insulator etc.
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