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Ullmannite & Tetrahedrite

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ESM705930

Ullmannite & Tetrahedrite

Description Tabs

Description
Locality: 
Aurora Mine, Ramsbeck, Bestwig, Arnsberg, North Rhine - Westphalia, Germany
Class: 
Combination
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2.5 × 3 × 2.3 cm
Description

Grey metallic ullmannite cubes with tetrahedrite crystals  on matrix

Mineral Data
What's on the rock

Ullmannite

Formula: 
NiSbS
Strunz: 
2.EB.25
Crystal System: 
Isometric
Hardness: 
5.0 - 5.5
Type Locality: 
Storch und Schöneberg Mine, Gosenbach, Siegerland, North Rhine-Westphalia, Germany

Tetrahedrite

Formula: 
Cu6[Cu4(Fe,Zn)2]Sb4S13
Strunz: 
2.GB.05
Hardness: 
3.5 - 4.0