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Gold Quartz Sphalerite Calcite & Pyrrhotite

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KFT88937

Gold Quartz Sphalerite Calcite & Pyrrhotite

Description Tabs

Description
Locality: 
Brad, Hunedoara County, Romania
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.1 × 2.2 × 2.2 cm
Description

A very rare specimen hard obtain - 5 areas show gold!

Mineral Data
What's on the rock

Gold

Formula: 
Au
Strunz: 
1.AA.05
Crystal System: 
Isometric
Hardness: 
2.5 - 3.0

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

Calcite

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

Pyrrhotite

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