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Freudenbergite

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SKY552437

Freudenbergite

Rare Mineral

Description Tabs

Description
Locality: 
Kaskasnyunchorr Mountain, Khibiny Massif, Murmansk Oblast, Russian Federation
Class: 
Crystals on Matrix
Size Range: 
Micromount (under 1cm)
Size: 
0.5 × 0.4 × 0.2 cm
Description

Four small specimens of black microcrystals of the very rare mineral freudenbergite from one of the only five known localities worldwide. Associated mineral is abundant orange-brown rutile. One of the four specimens is very rich in freudenbergite, the other are richer in rutile and minoritary in freudenbergite.

Outstanding under the microscope due to the contrast of both species !

Mineral Data
What's on the rock

Freudenbergite

Formula: 
Na2(Ti,Fe)8O16
Strunz: 
4.CC.10
Hardness: 
0.0
Type Locality: 
Michelsberg Quarry, Katzenbuckel, Eberbach, Odenwald, Baden-Württemberg, Germany

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