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Wolframoixiolite

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CR21525

Wolframoixiolite

Description Tabs

Description
Locality: 
Cínovec/Zinnwald, Teplice, Ústí nad Labem Region, Czech Republic
Size Range: 
Miniature (4.5-7 cm)
Size: 
3.8 × 5.2 × 2.6 cm
Description

Black brown intergrown crystals of wolframoixiolite in quartz matrix.

Mineral Data
What's on the rock

Wolframoixiolite

Variety Of: 

Ixiolite

Formula: 
(Ta,Nb,Sn,Fe,Mn)4O8
Strunz: 
4.DB.25
Hardness: 
6.0 - 6.5
Formula: 
(Nb,W,Ta,Fe,Mn,Nb)2O4
Crystal System: 
Monoclinic
Hardness: 
5.0 - 6.0
Colour: 
Black