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0 item @ $0.00  

Muscovite

#PD34689

Muscovite

#PD34689
Availability
Sold
Size
10 x 7 x 3 cm - Cabinet 
Formula
KAl2(Si3Al)O10(OH)2 (RRUFF)
Locality
Warren Brothers quarry, Bristol Co., Massachusetts, United States

Phyllosilicate - Monoclinic - Mica group member. Ordinary (True or Common) Mica - Dioctahderal.

This specimen contains hundreds of pseudohexagonal platy crystals to 7-10mm.

Muscovite

Formula
KAl2(Si3Al)O10(OH)2 
Crystal System
Monoclinic 
Crystal Habit
Massive - Lamellar, Foliated, Micaceous 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
white, gray, silver white, brownish white, greenish white 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Sectile 
Hardness
2-2.5 

Data courtesy of Webmineral.

Collection
Phillips Collection
Mineralpedia
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