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Krennerite Nagyágite & Sylvanite

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GMN804625

Krennerite Nagyágite & Sylvanite

Type Locality

Description Tabs

Description
Locality: 
Săcărâmb, Deva, Hunedoara County, Romania
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.5 × 4.5 × 2 cm
Description

A classic piece from Sacaramb (Nagyag).
Golden yellow-grey striated, well formed krennerite crystals on matrix, with black , lustrous nagyagite crystals. The nagyágite leafs are covered by tiny crystals of the second generation (9th photo) of Nagyagite.
There are mainly krennerite and nagyagite crystals with a hints of sylvanite (4th picture).

The type locality of the krennerite and nagyagite is Sacaramb.
 

Mineral Data
What's on the rock

Krennerite

Formula: 
(Au,Ag)Te2
Strunz: 
2.EA.15
Hardness: 
2.0 - 3.0
Type Locality: 
Sacarîmb (Sãcãrâmb; Szekerembe; Nagyág), Deva, Hunedoara Co., Romania

Nagyágite

Formula: 
Pb5Au(Te,Sb)4S5-8
Strunz: 
2.HB.20a
Crystal System: 
Tetragonal
Hardness: 
1.0 - 1.5
Type Locality: 
Sacarîmb (Sãcãrâmb; Szekerembe; Nagyág), Deva, Hunedoara Co., Romania

Sylvanite

Formula: 
(Au,Ag)2Te4
Strunz: 
2.EA.05
Crystal System: 
Monoclinic
Hardness: 
1.5 - 2.0
Type Locality: 
Baia de Arieş (Offenbánya), Alba Co., Romania

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