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Bournonite & Tetrahedrite

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NST734849

Bournonite & Tetrahedrite

Description Tabs

Description
Locality: 
Huaron Mines, Pasco Department, Peru
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 6 × 3.5 cm
Description

A fine example of twinned Bournonites, sharp lustrus Tetrahedrites and black Spahlerite partly covered by white Quartz.

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

Tetrahedrite

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