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Mineralpedia Details for Wolframite

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Wolframite

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 
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Wolframite from Cligga mine, Perranzabuloe, Cornwall, England

Wolframite
            from Cligga mine, Perranzabuloe, Cornwall, England

Simply a mass of black thick bladed Wolframite from a desirable locality.

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Wolframite from Carrock mine, Caldbeck Fells, Cumbria, England

Wolframite
            from Carrock mine, Caldbeck Fells, Cumbria, England

A chunk of Quartz vein material with embedded black tabular crystals to 2.5cm with dull silvery Arsenopyrite. Outside of Devon and Cornwall, the Carrock mine was the only mine which produced commercial quantites of the tungsten.

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Wolframite from Little Dora mine, San Juan Co., Colorado, United States

Wolframite
            from Little Dora mine, San Juan Co., Colorado, United States

Shiny black bladed crystals of Wolframite to 1.1cm.

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