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Tantalite-(Mn) Psm Simpsonite

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SHS18030

Tantalite-(Mn) Psm Simpsonite

Description Tabs

Description
Locality: 
Alto do Giz Pegmatite, Equador, Borborema Province, Rio Grande do Norte, Brazil
Size Range: 
Thumbnail (1-3cm)
Size: 
2.7 × 2.1 × 2 cm
Largest Crystal: 
2.70cm
Description

Manganotantalite pseudomorph after simpsonite

Mineral Data
What's on the rock

Tantalite-(Mn)

Formula: 
MnTa2O6
Strunz: 
4.DB.35
Hardness: 
6.0
Type Locality: 
Utö Mines, Utö, Södermanland, Sweden

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