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Hisingerite

#PD38564
SOLD
Hisingerite from Långban, Filipstad, Värmland, Sweden - PD38564
Hisingerite from Långban, Filipstad, Värmland, Sweden - PD38564

Hisingerite

#PD38564
Availability
Sold
Size
5 x 4.5 x 3.5 cm - Miniature 
Formula
Fe3+2Si2O5(OH)4·2H2O (RRUFF)
Locality
Långban, Filipstad, Värmland, Sweden

Not much to this mineral. It's a hrydrated iron silicate with a jet black, vitreous luster. This specimen looks close to an obsidian, dark glassy, crystalline mass.

Hisingerite

Formula
Fe3+2Si2O5(OH)4·2H2O 
Crystal System
Monoclinic 
Crystal Habit
Acicular, Massive, Compact 
Cleavage
None, None, None 
Luster
Greasy (Oily) 
Color
brownish black, black 
Streak
yellowish brown 
Class
Monoclinic 
Fracture
Conchoidal 
Hardness
3 

Data courtesy of Webmineral.

Collection
Phillips Collection
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