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Pyrite With Quartz Sphalerite & Chalcopyrite

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LGM557620

Pyrite With Quartz Sphalerite & Chalcopyrite

Ex Dr. Krantz, Bonn, Germany
With Antique Label

Description Tabs

Description
Locality: 
Banská Štiavnica, Banská Štiavnica County, Banská Bystrica Region, Slovakia (Slovak Republic)
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4 × 4.5 × 2.5 cm
Weight: 
66.00gr
Description

Striated, brass-golden pyrite cubes together with quartz crystals on ore matrix mostly consisting of sphalerite.

The label states: "Pyrit goldhltg. an Quarzkristallen, Schemnitz" (Gold-bearing pyrite on quartz crystals, Schemnitz). Schemnitz is the old german name for todays Banská Štiavnica in Slovakia - a classic slovakian locality quite well known for gold.

I did not find free gold on this specimen, but if existing, it is possibly too small and difficult to distinguish between gold and the pyrite.

 

Mineral Data
What's on the rock

Pyrite

Formula: 
FeS2
Strunz: 
2.EB.05a
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

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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