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Marcasite With Sphalerite & Baryte

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PCZ201329

Marcasite With Sphalerite & Baryte

Description Tabs

Description
Locality: 
Hampstead Farm Quarry, Chipping Sodbury, Gloucestershire, United Kingdom
Size Range: 
Cabinet (10-18 cm)
Size: 
10 × 5 × 5 cm
Description

A base layer of barite is covered by wavy alternating bands of sphalerite (dark) and marcasite. A very unusual and not unattractive specimen from an infrequently offered locality.

Mineral Data
What's on the rock

Marcasite

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

Sphalerite

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

Baryte

Formula: 
BaSO4
Strunz: 
7.AD.35
Hardness: 
3.0 - 3.5
Streak: 
White
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