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Wolframite

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JZM671371

Wolframite

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Description
Locality: 
Échassières, Ébreuil, Allier, Auvergne-Rhône-Alpes, France
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.4 × 4 × 2.3 cm
Weight: 
68.00gr
Description

Interesting sample from an older collection (early 80s): black acicular/columnar crystal of wolframite intergrown in a matrix of quartz and other minerals. There is a handwritten label which gives the locality and the minerals wolframite, quartz and beryl.

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

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