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Native Tellurium On Sylvanite

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CR19897

Native Tellurium On Sylvanite

Description Tabs

Description
Locality: 
Emperor Mine, Viti Levu, Fiji
Size Range: 
Thumbnail (1-3cm)
Size: 
0.4 × 1.5 × 0.3 cm
Description

Two hexagonal silver white native tellurium crystals to 2mm size are perched upon a elongate perfect sylvanite crystal. Under a hand lens some hoppered crystal growth is visible on the hexagonal termination faces of the tellurium.

The crystals have superb metallic lustre. A fine combination of a semi-metal (tellurium) on a lustrous gold, silver telluride mineral (sylvanite) from a gold producing mine.

Mineral Data
What's on the rock

Tellurium

Formula: 
Te
Strunz: 
1.CC.10
Crystal System: 
Hexagonal
Hardness: 
2.0 - 2.5
Colour: 
Tin-white
Streak: 
Grey
Type Locality: 
Mariahilf Mine, Faţa Băii (Facebánya; Facebay; Fatiabaja), Zlatna (Zalatna; Zalathna), Alba Co., Romania

Sylvanite

Formula: 
(Au,Ag)2Te4
Strunz: 
2.EA.05
Crystal System: 
Monoclinic
Hardness: 
1.5 - 2.0
Type Locality: 
Baia de Arieş (Offenbánya), Alba Co., Romania