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Boulangerite Sphalerite & Chalcopyrite

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POL937460

Boulangerite Sphalerite & Chalcopyrite

Classic Locality

Description Tabs

Description
Locality: 
Bohutín Deposit, Březové Hory, Příbram, Central Bohemian Region, Czech Republic
Class: 
Massive/Crystalline
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 5 × 3.4 cm
Description

Nice solid specimen of acicular, metallic Boulangerite (not tested - specimen was labeled as "Heteromorphite" but according to mindat there is no Heteromorphite in Pribram area) with reddish-brown Sphalerite and some Chalcopyrite in Quartz matrix. Ex coll. H. Drygalski (1929-2005).

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

Chalcopyrite

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

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