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Bournonite Galena & Tetrahedrite

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SCH55893

Bournonite Galena & Tetrahedrite

Description Tabs

Description
Locality: 
Georg Mine, Willroth, Altenkirchen, Rhineland-Palatinate, Germany
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.9 × 5.4 × 3.7 cm
Description

Sharp bright crystals of bournonite set on a light brown, flattened siderite matrix with dull galena crystals and minor tetrahedrite.

Mineral Data
What's on the rock

Bournonite

Formula: 
PbCuSbS3
Strunz: 
2.GA.50
Hardness: 
2.5 - 3.0
Type Locality: 
Wheal Boys (Trewetha Mine; Old Trewetha Mine), Port Isaac, St Endellion, Wadebridge District, Cornwall, England, UK

Galena

Formula: 
PbS
Strunz: 
2.CD.10
Crystal System: 
Isometric
Hardness: 
2.5
Colour: 
Lead-grey
Streak: 
Lead-grey

Tetrahedrite

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

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