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Columbite-(Mn)

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PDM957183

Columbite-(Mn)

Description Tabs

Description
Locality: 
Manindroa, Mahaiza, Betafo, Vakinankaratra, Madagascar
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
1.9 × 1.2 × 1 cm
Description

Cluster of sharp tabular crystals of “mangano columbite” of black colour and perfectly terminated. It is a fine specimen from Manindroa, at the East of the classic Tsaramanga pegmatite.

Found in 2020.

Combine specimens to reduce shipping costs!.

Mineral Data
What's on the rock

Columbite-(Mn)

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

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