Astrophyllite
SOLD
Astrophyllite
- Sold
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- Availability
- Sold
- Size
- 4 x 3.5 x 5 cm - Miniature
- Formula
- K2NaFe2+7Ti2(Si4O12)2O2(OH)4F (RRUFF)
- Locality
- Langesundsfjorden, Larvik, Vestfold, Norway
At first glance this looks like a biotite mica. It is actually not even micaceous even though it looks micaceous. The crystals are brown, shiny, and platy, which only looks like mica but is placed in this Special Edition to show the similarity of the two minerals.
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.
- Collection
- Phillips Collection
- Mineralpedia
- View Astrophyllite
- On Dakota Matrix
- Previously Sold Astrophyllite
- On Dakota Matrix
- Other Available Astrophyllite
- WebMineral
- View Astrophyllite
- Mindat
- View Astrophyllite
