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Boulangerite

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CR521259

Boulangerite

Classic Locality

Description Tabs

Description
Locality: 
Trepča, Mitrovica District, Kosovo
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
12.5 × 3.2 × 1.5 cm
Description

Scintillating, iridescent, metallic-gray boulangerite needles are very richly nested on this fine specimen from the Stari Trg Mine of Kosovo.
Boulangerite specimens of this richness and quality are very uncommon from this noted locale. The back is totally matted with tiny boulangerite needles.

With minor siderite crystals.

Mineral Data
What's on the rock

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