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0 item @ $0.00  

Rare Mineral Species of Langban & Harstigen, Sweden

Tuesday, 30 May 2017 06:30 PM

Somewhat kin to Franklin in terms of geology and mineralization, this area is also famous for its rare species. We will have some older material available. It's in short supply!

Wermlandite

with Magnetite - #PD46957
Locality
Långban, Filipstad, Värmland, Sweden 
Formula
Mg8Al2(OH)18(SO4)2·12H2
Availability
Sold
Size
2.2 x 2.1 x 0.7 cm - Thumbnail 
Special Info
Type Locality 

A fantastic specimen of blue Wermlandite in small, tabular crystals to 1mm. There several crystals on front and back. The black crystals are Magnetite and there is also yellowish crystals, less than 0.75mm, of Pyroaurite. A small specimen, but juiced with good rare crystals.


Wermlandite

Formula
Mg8Al2(OH)18(SO4)2·12H2
Crystal System
Trigonal 
Crystal Habit
Thin, Hexagonal, Platy 
Cleavage
Perfect, None, None 
Color
bluish, greenish gray 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Micaceous 
Hardness
1.5 
Collection
Phillips Collection
Special Info
Type Locality

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