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Boulangerite Sphalerite Var Marmatite Pyrrhotite Galena & Chalcopyrite

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SLN530958

Boulangerite Sphalerite Var Marmatite Pyrrhotite Galena & Chalcopyrite

Description Tabs

Description
Locality: 
Trepča, Mitrovica District, Kosovo
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
2.2 × 12.6 × 8.2 cm
Largest Crystal: 
3.00cm
Weight: 
288.00gr
Description

Nice and important specimen from Trepca with a myriad of steel grey acicular prismatic boulangerite crystals free or included in calcite crystals in association with sphalerite var marmatite in big crystals of excellent brightness,sparkling galena and small yellow bronze chalcopyrite crystals on matrix of pirrhotite in shiny lamellar 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

Sphalerite

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

Marmatite

Variety Of: 

Sphalerite

Formula: 
ZnS
Strunz: 
2.CB.05a
Hardness: 
3.5 - 4.0
Formula: 
(Zn,Fe)S
Hardness: 
0.0
Colour: 
Black

Pyrrhotite

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

Galena

Formula: 
PbS
Strunz: 
2.CD.10
Crystal System: 
Isometric
Hardness: 
2.5
Colour: 
Lead-grey
Streak: 
Lead-grey

Chalcopyrite

Formula: 
CuFeS2
Strunz: 
2.CB.10a
Crystal System: 
Tetragonal
Hardness: 
3.5 - 4.0

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