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Bournonite & Sphalerite

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SCH37561

Bournonite & Sphalerite

Description Tabs

Description
Locality: 
Les Malines, Saint-Laurent-Le-Minier, Gard, Occitanie, France
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 4.9 × 5.1 cm
Description

Several bournonite cyclic-twins with better luster than usual and sharp faces are nicely displayed  atop the matrix and are very well-formed with nice 3-dimensionality. Dark red sphalerite is present from contrast. An excellent specimen of bournonite from France!

Mineral Data
What's on the rock

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

Sphalerite

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

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