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Pyrite On Bournonite

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SUR14602

Pyrite On Bournonite

Description Tabs

Description
Locality: 
Machacamarca Mine, Machacamarca, Saavedra Province, Potosi Department, Bolivia
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 2.5 × 0.4 cm
Description

An exquisite sharp tabular crystal of bournonite sprinkled with tiny glistening micro-pyrite crystals.

Excellent contrast with the golden pyrite against the matt grey of the bournonite.

A pristine condition floater.

Mineral Data
What's on the rock

Pyrite

Formula: 
FeS2
Strunz: 
2.EB.05a
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5

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
Surrey Minerals