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Sphalerite & Chalcopyrite

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SKI720689

Sphalerite & Chalcopyrite

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Description
Locality: 
Büschhof Quarry, Wirtenbach, Waldbröl, Cologne, North Rhine - Westphalia, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.3 × 0.7 cm
Largest Crystal: 
0.40cm
Description

Spinel-twinned transparent Sphalerite covered by a thin layer of epitaxial grown lustrous golden Chalcopyrite. 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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