Meaning & use
muscovite
Last updated
A common silvery mineral of the mica group, potassium aluminum silicate, that splits easily into thin, flexible sheets.
See it in a sentence
The rock face glittered with flecks of muscovite catching the sunlight.
Muscovite is used industrially as an insulator because it withstands high temperatures without conducting electricity.
A note on using this word
The mineral's name comes from "Muscovy glass," an old name for sheets of mica once used in Russia as a substitute for window glass.
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