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0 item @ $0.00  

Zinnwaldite transitional member

#PD31933

Zinnwaldite transitional member

#PD31933
Availability
Sold
Size
4 x 2 x 0.6 cm - Miniature 
Formula
KLiFe2+Al(AlSi3)O10(F,OH)2 (RRUFF)
Locality
Zinnwald, Erzgebirge, Bohemia, Czech Republic

Phyllosilicate - Monoclinic - Mica group member. Ordinary (True or Common) Mica - Trioctahderal. A transitional member on the Siderophyllite-Polylitionite join.

Just a small specimen.

More on rare mica minerals

Zinnwaldite

Formula
KLiFe++Al(AlSi3)O10(F,OH)2 
Crystal System
Monoclinic 
Crystal Habit
Pseudo Hexagonal, Micaceous, Platy 
Cleavage
Good, None, None 
Luster
Vitreous - Pearly 
Color
light brown, silvery white, gray, yellowish white, greenish white 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Uneven 
Hardness
3.5-4 

Data courtesy of Webmineral.

Collection
Phillips Collection

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