Wolframite

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Ferberite (Wolframite)
Panasqueira Mine - Couto Mineiro da Panasqueira, Panasqueira, Covilhã, Castelo Branco District, Portugal

Item-No.: MIN1291
Price: 195.00 EUR 
Siderite, Wolframite
Panasqueira Mine - Couto Mineiro da Panasqueira, Panasqueira, Covilhã, Castelo Branco District, Portugal

Item-No.: MIN0156
Price: 480.00 EUR 
Wolframite, Zinnwaldite
Cínovec , Krušné Hory Mts, Ústí Region (Bohemia), Czech Republic

Item-No.: MIN0159
Price: 130.00 EUR 

Synonyms:  Cal, Call, Gal, Mock-lead, Prismatic scheelium ore, Tungsttate of Iron and Manganese, Wolfram
IMA Status:  Discredited
Classification:  As single mineral not recognised, Wolframite Group
Chemical formula:  (Fe,Mn,Mg)WO4
Crystal system:  Monoclinic
Density (g/cm3):  9,175 calculated (Mineralienatlas)
Tenacity:  Brittle
Cleavage:  Perfect
Fracture:  Irregular/Uneven
Hardness (Mohs):  5 - 5,5
Colour:  Greyish-black
Lustre:  Sub-Metallic
Streak:  Reddish brown
Application:  Principal ore of tungsten

 


 

 


 

 
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