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Djerfisherite Titanite Nepheline & Aenigmatite

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Djerfisherite Titanite Nepheline & Aenigmatite

Classic Locality

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Description
Locality: 
Yukspor Mountain, Khibiny Massif, Murmansk Oblast, Russian Federation
Class: 
Massive/Crystalline
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.2 × 2.1 × 1.3 cm
Description

Rich speciemen of rare, large (1 cm !), metallic bronze grain of Djerfisherite in matrix (juvite-pegmatite) consist of brown Titanite crystal, grey Nepheline and black Aenigmatite from classic locality.

This is my biggest specimen of this rare sulphide.

Mineral Data
What's on the rock

Djerfisherite

Formula: 
K6(Fe,Cu,Ni)25S26Cl
Strunz: 
2.FC.05
Hardness: 
3.5
Type Locality: 
Kota-Kota meteorite (Marimba meteorite), Malawi

Titanite

Formula: 
CaTi(SiO4)O
Strunz: 
9.AG.15
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Titanite occurrence, Hauzenberg, Lower Bavaria, Bavaria, Germany

Nepheline

Formula: 
(Na,K)AlSiO4
Strunz: 
9.FA.05
Hardness: 
5.5 - 6.0
Type Locality: 
Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy

Aenigmatite

Formula: 
Na2Fe2+5Ti(Si6O18)O2
Strunz: 
9.DH.40
Crystal System: 
Triclinic
Hardness: 
5.5 - 6.0
Type Locality: 
Kangerluarsuk Fjord (Kangerdluarssuq Fjord), Ilímaussaq complex, Narsaq, Kujalleq, Greenland

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