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Bournonite

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CR663820

Bournonite

Description Tabs

Description
Locality: 
Yaogangxian Mine, Hunan Province, China (Peoples Republic)
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 6.5 × 3 cm
Largest Crystal: 
6.50cm
Description

Here is a very fine Yaogangxian bournonite that has fantastic form and good size as well.

It is a tabular crystal with super-bright metallic faces, and the common bournonite "cogwheel" pattern around the edge.

Fantastic specimen from Armin Wendland collection.

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