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

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