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Chalcopyrite On Galena & Sphalerite

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KSC198924

Chalcopyrite On Galena & Sphalerite

Description Tabs

Description
Locality: 
Gyudyurska Mine, Zlatograd, Smolyan Oblast, Bulgaria
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 3.5 × 2.5 cm
Description

Small but top quality crystals of chalcopyrite on a matrix of equal quality modified cubes to octahedra crystals of galena and jet black sphalerite. You can see the epitaxial crystal of chalcopyrite on galena. Only a few sphalerite crystals show wear near the base, but overall the condition is very good.

Mineral Data
What's on the rock

Chalcopyrite

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

Galena

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

Sphalerite

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

Seller Information

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