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Boulangerite & Pyrite

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TPX684884

Boulangerite & Pyrite

Classic Locality

Description Tabs

Description
Locality: 
Noche Buena Mine, Noche Buena, Mazapil Municipality, Zacatecas, Mexico
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 4 × 2.5 cm
Weight: 
44.00gr
Description

Spectacular and very interesting specimen with a lot of metallic gray acicular boulangerite crystals with pyrite crystals on quartz matrix from this classic Mexican site.

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

Pyrite

Formula: 
FeS2
Strunz: 
2.EB.05a
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5

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