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0 item @ $0.00  

Ferberite

#PD33500

Ferberite

#PD33500
Availability
Sold
Size
5 x 8 x 5 cm - Sm Cabinet 
Formula
Fe2+WO4 (RRUFF)
Locality
Cold Spring Mine, Tungsten Dist., Boulder Co., Colorado, United States
Tagged
tungstate

A heavy solid 5cm thick vein of lustrous sharp black Ferberite crystals, some of which are well formed in open spaces to 3mm. Impressive specimen!

Additionally, this intersting piece comes with a label from the E. Mitchell Gunnell Collection that mentions it was originally acquired from a minor in Boulder, Colorado in 1938.

Ferberite

Formula
Fe2+WO4 
Crystal System
Monoclinic 
Crystal Habit
Prismatic, Lamellar, Massive - Granular 
Cleavage
Perfect, Parting, Parting 
Luster
Sub Metallic 
Color
black 
Streak
brownish black 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Uneven 
Hardness
4.5 

Data courtesy of Webmineral.

Collection
Phillips Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Ferberite
On Dakota Matrix
Other Available Ferberite
WebMineral
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Mindat
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