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Bournonite Boulangerite & Siderite

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CLB101710

Bournonite Boulangerite & Siderite

ex coll. Prof. Wotruba
Classic Locality

Description Tabs

Description
Locality: 
Apollo Mine, Raubach, Neuwied, Rhineland-Palatinate, Germany
Size Range: 
Cabinet (10-18 cm)
Size: 
10.8 × 6.6 × 4.2 cm
Description

The Apollo mine is famous for it's boulangerite and bournonite finds. But those days are long gone. Here's a specimen from an old find by Prof. Wotruba. Cotton-like, dark metallic boulangerite on one side, massive glossy bournonite all through the siderite matrix with a few nice crystals up to 1 cm on the other side. And a few nice siderite crystals and some minor pyrite.

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

Boulangerite

Formula: 
Pb5Sb4S11
Strunz: 
2.HC.15
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.0
Colour: 
Lead grey
Streak: 
Brownish
Type Locality: 
Molières, Gard, Languedoc-Roussillon, France

Siderite

Formula: 
FeCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.5
Streak: 
White

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