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Galena & Chalcopyrite

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MGR1112363

Description Tabs

Description
Locality: 
Deveti Septemvri Mine, Smolyan Oblast, Bulgaria
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.9 × 4.8 × 3.7 cm
Description

Fine example of galena from Bulgaria. The well formed crystals form a bright metallic lustrous specimen that is also accompanied with chalcopyrite.

Mineral Data
What's on the rock

Galena

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

Chalcopyrite

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