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Webster 1913 Edition

Muscovite

Mus′co-vite

,
Noun.
[See
Muscovy glass
.]
1.
A native or inhabitant of Muscovy or ancient Russia; hence, a Russian.
3.
(Min.)
Common potash mica, essentially
KAl3Si3O10(OH)2
. It is used as an electrical insulator. See
Mica
.

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