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Chalcopyrite & Galena

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BMM703738

Chalcopyrite & Galena

Description Tabs

Description
Locality: 
Borieva Mine, Madan, Smolyan Oblast, Bulgaria
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.9 × 3.6 × 3 cm
Description

A great combined piece of chalcopyrite and galena. The chalcopyrite has sharp crystals and an amazing metallic iridescent patina with violet, red and blue shades. This is truly a remarkable sight, much better in person!

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