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Sphalerite With Chalcopyrite

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SKI153207

Sphalerite With Chalcopyrite

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Description
Locality: 
Büschhof Quarry, Wirtenbach, Waldbröl, Cologne, North Rhine - Westphalia, Germany
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 3.1 × 2 cm
Description

Very nice example showing epitactical growth of chalcopyrite on reddish-brown twinned sphalerite. In paragenesis with colourless calcite and whiteish dolomite.

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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