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Tetrahedrite & Chalcopyrite

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PCZ727896

Tetrahedrite & Chalcopyrite

Description Tabs

Description
Locality: 
Eagle Crag Mine, Patterdale, Cumbria, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.1 × 2.7 × 2 cm
Description

Reflective chalcopyrite with dark grey crystals of tetrahedrite on a white quartz matrix. The chalcopyrite occurs as a yellow core to the tetrahedrite which can be seen in some broken crystals which also display the tetragonal shape. An unusual and very interesting speimen from an uncommon British locality.

 

Minor: 
Chalcopyrite
Minor: 
Galena
Minor: 
Quartz
Condition
General: 
Good - locality specimen
Main Crystal: 
Good - peripheral damage
Lustre: 
Bright Metallic
Mineral Data
What's on the rock

Tetrahedrite

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

Chalcopyrite

Formula: 
CuFeS2
Strunz: 
2.CB.10a
Crystal System: 
Tetragonal
Hardness: 
3.5 - 4.0
Peter Crozier Minerals