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Sphalerite & Chalcopyrite

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SKI624202

Sphalerite & Chalcopyrite

Description Tabs

Description
Locality: 
Büschhof Quarry, Wirtenbach, Waldbröl, Cologne, North Rhine - Westphalia, Germany
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 2.5 × 2.2 cm
Description

A beautiful matrix specimen showing a lustrous, orange-red aggregate of sphalerite with epitaxial growth of chalcopyrite on dolomite matrix. The aggregate measures 7 mm. Base formated by a saw cut.

Büschhof quarry is an interesting locality. Cu-, Fe-, Pb- and Zn-minerals are present inside a fossil devonian stromatopore reef.

Mineral Data
What's on the rock

Sphalerite

Formula: 
ZnS
Strunz: 
2.CB.05a
Crystal System: 
Isometric
Hardness: 
3.5 - 4.0

Chalcopyrite

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

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