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Sphalerite & Boulangerite & Calcite

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GPM686956

Sphalerite & Boulangerite & Calcite

Description Tabs

Description
Locality: 
Stan Terg Mine, Trepča, Mitrovica District, Kosovo
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 4 × 4 cm
Largest Crystal: 
1.50cm
Description

Amazing combination!

Excellent, well terminated, glossy black sphalerite crystals (measuring up to 1.5 cm) associated with well-terminated calcite crystal and very attractive, spherical, massive aggregates (over 1.5 cm) of boulangerite crystals consisted of thousands tiny and fibrous metallic-grey, lustrous crystals. From the famous Trepča complex, Kosovo.

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Mineral Data
What's on the rock

Sphalerite

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

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

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

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