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Freibergite & Jamesonite

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MGR803881

Freibergite & Jamesonite

Classic Locality

Description Tabs

Description
Locality: 
Herja Mine, Chiuzbaia, Baia Mare, Maramureș County, Romania
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.7 × 6.3 × 3.4 cm
Description

A very rare specimen of razor sharp, octahedral freibergite crystals on jamesonite matrix. The freibergite crystals are all sharp, some are lustrous, others show a thin layer (of jamesonite). Well formed, very good crystal size of freibergite and really rich of them. No significant damages to report, should be high valued for rarity.

Mineral Data
What's on the rock

Freibergite

Formula: 
Ag6[Cu4Fe2]Sb4S13-x
Strunz: 
2.GB.05
Hardness: 
3.5 - 4.0
Colour: 
Grey
Type Locality: 
Reiche Zeche Mine, Himmelfahrt Mine, Freiberg, Freiberg District, Erzgebirge, Saxony, Germany

Jamesonite

Formula: 
Pb4FeSb6S14
Strunz: 
2.HB.15
Crystal System: 
Monoclinic
Hardness: 
2.5
Type Locality: 
Cornwall, England, UK