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Galena Sphalerite & Tetrahedrite

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NST714715

Galena Sphalerite & Tetrahedrite

Description Tabs

Description
Locality: 
Romania
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 3.8 × 2 cm
Largest Crystal: 
0.60cm
Description

An old-timer from Transilvania showing cuboctahedral Galena, brown twinned Sphalerite, metallic-grey Tetrahedrite, golden Pyrite and white Calcite.

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

Tetrahedrite

Formula: 
Cu6[Cu4(Fe,Zn)2]Sb4S13
Strunz: 
2.GB.05
Hardness: 
3.5 - 4.0