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Wolframite

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MGR649451

Wolframite

Description Tabs

Description
Locality: 
Panasqueira Mines, Covilhã, Castelo Branco District, Portugal
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.9 × 4.3 × 2.1 cm
Description

One more rare mineral from the locality. The crystals is well shaped at front and backside, the faces are highly lustrous. It is end-pointed at the top, bottom was extracted from the rock. Minor siderite and muscovite help to give more contrast to the piece.

Mineral Data
What's on the rock

Wolframite

Synonym Of: 

Hübnerite

Formula: 
MnWO4
Strunz: 
4.DB.30
Hardness: 
4.0 - 4.5

Ferberite

Formula: 
FeWO4
Strunz: 
4.DB.30
Hardness: 
4.0 - 4.5
Formula: 
(Fe2+)WO4 to (Mn2+)WO4
Crystal System: 
Monoclinic
Hardness: 
4 - 4.5
Colour: 
Greyish-black
Streak: 
Reddish Brown