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Tapiolite-(Fe)

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PDM868743

Tapiolite-(Fe)

Description Tabs

Description
Locality: 
Quixaba Pegmatite, Frei Martinho, Borborema Province, Paraiba, Brazil
Class: 
Single Crystal
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 1.2 × 1 cm
Description

Lustrous black, flattened tetragonal dipyramidal crystal of tapiolite-Fe from the Quixaba pegmatite in Brazil. It can be exhibit 360°, and shows crystal faces all around but the part that was in contact with the matrix. Good representative specimen of species and locality.

Ex Francis Hubert #11894.

Mineral Data
What's on the rock

Tapiolite-(Fe)

Formula: 
(Fe,Mn)(Ta,Nb)2O6
Strunz: 
4.DB.10
Hardness: 
6.0 - 6.5
Colour: 
Black
Type Locality: 
Tapiolite-(Fe) typelocality, Kulmala, Sukula Pegmatites, Tammela, Southern Finland Region, Finland

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