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Marcasite Galena & Sphalerite

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SIL727827

Marcasite Galena & Sphalerite

Classic Locality

Description Tabs

Description
Locality: 
Cimetière Quarry, Seilles, Andenne, Namur District, Belgium
Class: 
Crystals on Matrix
Size Range: 
Museum (18cm plus)
Size: 
23 × 18.5 × 8 cm
Weight: 
2 500.00gr
Description

A huge specimen (23 cm, 9 inches!) of a classic sulphide combination: a firm crust of Marcasite domed over a layer of octahedral Galena which is lined with microscopical crystals of Sphalerite. From a now-closed classic Belgian locality,

Mineral Data
What's on the rock

Marcasite

Formula: 
FeS2
Strunz: 
2.EB.10a
Crystal System: 
Orthorhombic
Hardness: 
6.0 - 6.5

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
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