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Columbite-(Mn)

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ZLT808201

Columbite-(Mn)

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Description
Locality: 
In den Dellen Quarries, Niedermendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1 × 1.8 × 1.4 cm
Description

Small, selected part of a sanidinite ejection block with a brown, prismatic crystal of columbite.-(Mn). FOV 1 mm.

EEX-PMH

BT

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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