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Sphalerite & Bournonite

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CAM212360

Sphalerite & Bournonite

With antique label
Classic Locality

Description Tabs

Description
Locality: 
Silberwiese Mine, Oberlahr, Altenkirchen, Rhineland-Palatinate, Germany
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.6 × 6.2 × 1.5 cm
Description

Closed in the early 1940's, the Silberwiese Mine is one of the better known classic localities in the Westerwald-Siegerland mining district.
This is a very fine and very typical specimen with a good coverage of gemmy red sphalerite crystals, some well-formed grey metallic bournonite crystals and some minor tetrahedrite on a siderite rich matrix.
The specimen has coverage on front and backside and comes with a beautiful old label.

Mineral Data
What's on the rock

Sphalerite

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

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

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