Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Boulangerite Sphalerite & Arsenopyrite

Views:
Watches:
RSL531985

Boulangerite Sphalerite & Arsenopyrite

Description Tabs

Description
Locality: 
Trepča, Mitrovica District, Kosovo
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.5 × 7.8 × 5.2 cm
Description

Specimen with a good size from this classic Kosovar mine. A matrix formed by crystals of arsenopyrite, twinned sphalerite, pyrite and some quartz. On them have grown nice aggregates of boulangerite showing a metallic gray fine-acicular crystals, but may have other sulphides of the same group, which are called "plumosite". A very brilliant and aesthetic specimen.

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

Sphalerite

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

Arsenopyrite

Formula: 
FeAsS
Strunz: 
2.EB.20
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0