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Fersmanite

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JYJ537988

Fersmanite

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Description
Locality: 
Kola Peninsula, Murmansk Oblast, Russian Federation
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.8 × 1.5 cm
Description

Dark brown fersmanite on matrix from the Kola peninsula. 

Mineral Data
What's on the rock

Fersmanite

Formula: 
Ca4(Na,Ca)4(Ti,Nb)4(Si2O7)2O8F3
Strunz: 
9.BE.72
Hardness: 
5.5
Type Locality: 
Vein No. 1 of Labuntsov, 3rd left tributary of Vuonnemijok river (Astrophillytovyi stream), Eveslogchorr Mt, Khibiny Massif, Kola peninsula, Murmanskaja Oblast', Northern Region, Russia...
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