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Columbite-(Mn) & Euxenite-(Y)

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TPX951355

Columbite-(Mn) & Euxenite-(Y)

Rare Mineral

Description Tabs

Description
Locality: 
Tsaramanga Pegmatite, Mahaiza, Betafo, Vakinankaratra, Madagascar
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2.3 × 2.3 × 1 cm
Weight: 
14.00gr
Description

Very interesting specimen of Columbite-(Mn) partially covered by Euxenite-(Y) from these famous Madagascar pegmatites.

Mineral Data
What's on the rock

Columbite-(Mn)

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

Euxenite-(Y)

Formula: 
(Y,Ca,Ce,U,Th)(Nb,Ti,Ta)2O6
Strunz: 
4.DG.05
Hardness: 
5.5 - 6.5
Type Locality: 
Undisclosed pegmatite, Jølster, Sogn og Fjordane, Norway

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