Arfvedsonite
SOLD
Arfvedsonite
- $40.00 $50.00 - Sold
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- Availability
- Sold
- Price
- $50.00
- Size
- 4 x 8 x 1.5 cm - Sm Cabinet
- Reduced Price
- $40.00
- Formula
- NaNa2(Fe2+4Fe3+)Si8O22(OH)2 (RRUFF)
- Locality
- Kangerdluarssuq, Ilimaussaq, Greenland
A large, black cleaved-prismatic Arfvedsonite crystal. Comes with an old Ward's label.
Arfvedsonite
- Formula
- NaNa2(Fe2+4Fe3+)Si8O22(OH)2
- Crystal System
- Monoclinic
- Crystal Habit
- Radial, Fibrous, Stellate
- Cleavage
- Perfect, Imperfect, None
- Luster
- Vitreous (Glassy)
- Color
- black, grayish green, bluish gray
- Streak
- bluish gray
- Class
- Monoclinic - Prismatic
- Fracture
- Brittle
- Hardness
- 5.5-6
Data courtesy of Webmineral.
Ward's Natural Science Est. label
- Mineralpedia
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- On Dakota Matrix
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- On Dakota Matrix
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- WebMineral
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