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Wolframite With Quartz

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QRI671924

Wolframite With Quartz

Classic Locality

Description Tabs

Description
Locality: 
Cligga Mine, Perranzabuloe, Cornwall, United Kingdom
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 3.9 × 2.2 cm
Description

Good ore group of wolframite crystals from Cligga mine. Thick and heavy crystals are associated to white quartz, typical for the local ore. Wolframite displays a moderate metal lustre on most display sides.
Very representative for the area, it comes with an old label.

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

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