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Astrophyllite

#64982
Astrophyllite from Bakstevalåsen, Gunhildrud, Øvre Eiker, Buskerud, Norway - 64982
Astrophyllite from Bakstevalåsen, Gunhildrud, Øvre Eiker, Buskerud, Norway - 64982

Astrophyllite

#64982
Availability
Available
Price
$25.00
Size
5 x 4 x 3.5 cm - Miniature 
Formula
K2NaFe2+7Ti2(Si4O12)2O2(OH)4F (RRUFF)
Locality
Bakstevalåsen, Gunhildrud, Øvre Eiker, Buskerud, Norway

Reddish brony balded crystals to 3cm in Quartz.

Astrophyllite

Formula
K2NaFe2+7Ti2(Si4O12)2O2(OH)4F 
Crystal System
Triclinic 
Crystal Habit
Bladed, Stellate, Crystalline - Fine 
Cleavage
Perfect, None, None 
Luster
Adamantine - Pearly 
Color
brown, brownish red, bronze yellow, gold yellow 
Streak
yellowish brown 
Class
Triclinic - Pedial 
Fracture
Brittle 
Hardness
3-3.5 

Data courtesy of Webmineral.

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