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Pyrrhotite Sphalerite Boulangerite Calcite & Rhodochrosite

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PFK605503

Pyrrhotite Sphalerite Boulangerite Calcite & Rhodochrosite

Description Tabs

Description
Locality: 
Trepča, Mitrovica District, Kosovo
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.6 × 5.1 × 3.3 cm
Description

Excellent example of pyrrhotite with rosettes of thin crystals, associated with crystals of black sphalerite and boulangerite included calcite. There is some minor rhodochrosite at the lower periphery.

Mineral Data
What's on the rock

Pyrrhotite

Formula: 
Fe1-xS (x = 0 to 0.17)
Strunz: 
2.CC.10
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0

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

Rhodochrosite

Formula: 
MnCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Cavnic Mine (Kapnikbánya), Cavnic (Kapnic; Kapnik), Maramureș Co., Romania

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