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Galena & Chalcopyrite

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NST730574

Galena & Chalcopyrite

Description Tabs

Description
Locality: 
Lüderich Mine, Altenbrück, Bensberg, Overath, Cologne, North Rhine - Westphalia, Germany
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 5 × 4 cm
Description

Lüderich is famous for its excellent Sphalerites. This example features dull grey Galena partially overgrown by golden Chalcopyrites and is of good quality for the locality.

Mineral Data
What's on the rock

Galena

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

Chalcopyrite

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