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Bournonite

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QRI772107

Bournonite

Former collections Christian Mavris & Bernardoni
Classic Locality

Description Tabs

Description
Locality: 
Georg Mine, Willroth, Altenkirchen, Rhineland-Palatinate, Germany
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.2 × 6.1 × 4.6 cm
Largest Crystal: 
1.60cm
Weight: 
221.00gr
Description

Impressive cabinet featuring a very large, complex bournonite cogwheel elegantly laid on brown, fresh siderite. The sulphosalt is a flat crystal with great metal lustre, with the bottom half with a more crude habit. Half a dozen minor pseudo square bournonite crystals surround the main crystal, with great lustre as well. 

An excellent German classic, unusually spotted in this size and quality. At least three decades old. 
Straight out of my collection (former Bernardoni, Italy, too).

Pasted Label
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

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