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Wolframite in Quartz

#52452

Wolframite in Quartz

#52452
Availability
Sold
Size
9 x 5.5 x 5 cm - Sm Cabinet 
Formula
(Fe2+, Mn2+)WO4 (RRUFF)
Locality
Carrock mine, Caldbeck Fells, Cumbria, England

Large black plates to over 2cm in Quartz matrix. Rich.

Wolframite

Formula
(Fe,Mn)WO4 
Crystal System
Monoclinic 
Crystal Habit
Prismatic, Lamellar, Massive - Granular 
Cleavage
Perfect, None, None 
Luster
Sub Metallic 
Color
brownish black, iron black 
Streak
reddish brown 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness
4.5 

Data courtesy of Webmineral.

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