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Wolframite In Quartz

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SHS34614

Wolframite In Quartz

ex. Collection Dr. Winfried Böhmer (Wunstorf/Germany)

Description Tabs

Description
Locality: 
Horní Slavkov, Sokolov, Karlovy Vary Region, Czech Republic
Size Range: 
Small cabinet (7-10 cm)
Size: 
9 × 7 × 3.5 cm
Description

Black wolframite in quartz

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

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White