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Galena Sphalerite & Calcite

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Galena Sphalerite & Calcite

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Description
Locality: 
Deveti Septemvri Mine, Smolyan Oblast, Bulgaria
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 3 × 2.5 cm
Description

Fine combination miniature with perfect cubic crystals of galena and iridescent sphalerite crystals,equally well-formed.Some quartz and calcite cover the back of the galena and sphalerite crystals.

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

Sphalerite

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

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

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