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Wolframite Psm Scheelite

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CR174826

Wolframite Psm Scheelite

Pseudomorph

Description Tabs

Description
Locality: 
Hingston Down Consols, Calstock, Cornwall, United Kingdom
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.4 × 3 × 2.7 cm
Description

A very rare pseudomorph of wolframite psm scheelite from Cornwall.

Octahedral crystals with a grey-white coating on both sides of the specimen.

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

Scheelite

Formula: 
Ca(WO4)
Strunz: 
7.GA.05
Crystal System: 
Tetragonal
Hardness: 
4.5 - 5.0
Streak: 
White
Type Locality: 
Bispbergs Klack, Säter, Dalarna, Sweden