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Bournonite Arsenopyrite & Sphalerite

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SER906914

Bournonite Arsenopyrite & Sphalerite

Description Tabs

Description
Locality: 
Casapalca Mine, Huarochiri Province, Lima Department, Peru
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.4 × 3.5 × 2.6 cm
Description

a rich specimen featuring black platy bournonite crystals on quartz with elongated arsenopyrite and black sphalerite

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

Arsenopyrite

Formula: 
FeAsS
Strunz: 
2.EB.20
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0

Sphalerite

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