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Ferritungstite

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SKY704413

Ferritungstite

Classic Locality

Description Tabs

Description
Locality: 
Clara Mine, Oberwolfach, Freiburg Region, Baden-Württemberg, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.9 × 1.3 × 0.6 cm
Description

Very dark green, almost black, microcrystals of the very rare tungsten mineral ferritungstite from the famous Grube Clara in Germany

Mineral Data
What's on the rock

Ferritungstite

Variety Of: 

Hydrokenoelsmoreite

Formula: 
2W2O6(H2O)
Strunz: 
4.DH.15
Hardness: 
3.0 - 0.0
Formula: 
(W,Fe3+)(O,OH)3
Hardness: 
0.0

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