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Chalcopyrite & Galena

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BMM1035174

Chalcopyrite & Galena

Description Tabs

Description
Locality: 
Borieva Mine, Madan, Smolyan Oblast, Bulgaria
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.8 × 3.5 × 3 cm
Description

Beautiful piece with remarkably large chalcopyrite crystals. What’s extraordinary about this piece are the amazing metallic iridescent patina with violet, red and blue shades in combination with the deep golden color. The piece is almost crystallized as a floater specimen, with an additional galena crystal growing on one side.

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