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Simpsonite

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SKY799481

Simpsonite

Rare Mineral

Description Tabs

Description
Locality: 
Alto do Giz Pegmatite, Equador, Borborema Province, Rio Grande do Norte, Brazil
Class: 
Single Crystal
Size Range: 
Micromount (under 1cm)
Size: 
0.3 × 0.3 × 0.3 cm
Description

Pale brown single crystal of this very rare aluminium tantalum oxide mineral, simpsonite.

Simpsonite is a tantalum mineral. Only a few Ta minerals exists.

 

Mineral Data
What's on the rock

Simpsonite

Formula: 
Al4(Ta,Nb)3O13(OH,F)
Strunz: 
4.DC.10
Crystal System: 
Hexagonal
Hardness: 
7.0 - 7.5
Streak: 
white
Type Locality: 
Tabba Tabba pegmatite, Wallareenya Station, Port Hedland Shire, Western Australia, Australia

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