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Muscovite (Silicate-Phyllosilicate) 


Hardness: 2.5 - 3.0
Specific Gravity: 2.9 - 3.1

Characteristics: White mica; platy mineral that peels off in 'sheets'; perfect basal cleavage; pearly or vitreous luster; transparent to translucent.

Found in schists; phyllites; granites; granitic pegmatites.

Some uses of muscovite include in electrical and heat insulation, production of porcelain, paper fireproof paint and rubber.

(Primary text: Perkins, D. 2002. Mineralogy. Prentice Hall.)


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