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Bournonite & Galena

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PFK629234

Bournonite & Galena

Classic Locality

Description Tabs

Description
Locality: 
Madem-Lakkos Mine, Chalkidiki Prefecture, Central Macedonia, Greece
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
12.3 × 7.7 × 4.4 cm
Description

Rare and good example of quite large crystals of bournonite on rounded crystals of galena. One of the bournonite crystals has been stabilized because it was loose.

Mineral Data
What's on the rock

Bournonite

Formula: 
PbCuSbS3
Strunz: 
2.GA.50
Hardness: 
2.5 - 3.0
Type Locality: 
Wheal Boys (Trewetha Mine; Old Trewetha Mine), Port Isaac, St Endellion, Wadebridge District, Cornwall, England, UK

Galena

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

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