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Edgarite

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Edgarite

Rare Mineral

Description Tabs

Description
Locality: 
Kaskasnyunchorr Mountain, Khibiny Massif, Murmansk Oblast, Russian Federation
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 0.7 × 0.7 cm
Description

Very small black crystals of the extremely rare Fe-Nb sulphide mineral edgarite from the TL in Khibiny, Kola.

The only Niobium sulphide mineral (without other anions ) known worldwide !

Ex. Erich Laskowski collection (USA) .

Mineral Data
What's on the rock

Edgarite

Formula: 
FeNb3S6
Strunz: 
2.DB.25
Crystal System: 
Hexagonal
Hardness: 
2.0 - 2.5
Colour: 
Dark grey
Type Locality: 
Kaskasnyunchorr Mt., Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia...

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