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Columbite-(Fe) On Cassiterite

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NSS217895

Columbite-(Fe) On Cassiterite

Description Tabs

Description
Locality: 
Governador Valadares, Minas Gerais, Brazil
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 3 × 2 cm
Largest Crystal: 
1.30cm
Description

complete cristal of columbite with caracteristic streaks on cassiterite, small specimen but very beautiful

Mineral Data
What's on the rock

Columbite-(Fe)

Formula: 
FeNb2O6
Strunz: 
4.DB.35
Hardness: 
6.0
Type Locality: 
Green's Well pegmatite (Green's Tank), Pilgangoora, Wallareenya Station, Port Hedland Shire, Western Australia, Australia...

Cassiterite

Formula: 
SnO2
Strunz: 
4.DB.05
Crystal System: 
Tetragonal
Hardness: 
6.0 - 7.0

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