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Columbite-Tantalite

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SKY903525

Columbite-Tantalite

Rare Mineral

Description Tabs

Description
Locality: 
Mapembe, Ituri, DR Congo
Class: 
Single Crystal
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.6 × 0.7 cm
Description

Rounded specimen of this rare the niobium tantalum mineral columbotantalite.

Ex Vandenbroucke Museum collection from Waregem, Belgium.

Mineral Data
What's on the rock

Columbite-Tantalite

Synonym Of: 

Columbite-(Fe)

Formula: 
FeNb2O6
Strunz: 
4.DB.35
Hardness: 
6.0

Columbite-(Mn)

Formula: 
(Mn,Fe)(Nb,Ta)2O6
Strunz: 
4.DB.35
Hardness: 
6.0

Stibiocolumbite

Formula: 
Sb(Nb,Ta)O4
Strunz: 
4.DE.30
Hardness: 
5.5

Stibiotantalite

Formula: 
Sb(Ta,Nb)O4
Strunz: 
4.DE.30
Hardness: 
5.5

Tantalite-(Fe)

Formula: 
FeTa2O6
Strunz: 
4.DB.35
Hardness: 
6.0 - 6.5

Tantalite-(Mn)

Formula: 
MnTa2O6
Strunz: 
4.DB.35
Hardness: 
6.0

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