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0 item @ $0.00  

Astrophyllite

#PD40487

Astrophyllite

#PD40487
Availability
Sold
Size
9 x 6 x 7 cm - Sm Cabinet 
Formula
K2NaFe2+7Ti2(Si4O12)2O2(OH)4F (RRUFF)
Locality
Skutesundskjær, Barkevik, Langesundsfjorden, Larvik, Vestfold, Norway
Tagged
pegmatite mineral

Long excellent blades to 4cm of golden brown Astrophyllite. This is an old University of Chicago piece from Paul Moore. See prov. tab.

Astrophyllite

Formula
K2NaFe2+7Ti2(Si4O12)2O2(OH)4
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.

Collection
Phillips Collection

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