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Bournonite & Sphalerite

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CLB34171

Bournonite & Sphalerite

Description Tabs

Description
Locality: 
Cavnic Mine, Maramureș County, Romania
Size Range: 
Cabinet (10-18 cm)
Size: 
5.5 × 16 × 11 cm
Largest Crystal: 
1.20cm
Description

Very rich specimen, full of dark-honey colored sphalerite crystals up to 1.2 cm and bournonite crystals 0.3-0.4 cm. There are hundreds of each on very attractive balls of calcite crystals, some calcite coating (tie and jacket included) and some pyrite in the quartz matrix.

 

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