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Nagyágite

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CR162443

Nagyágite

Type Locality
Rare Mineral

Description Tabs

Description
Locality: 
Săcărâmb, Deva, Hunedoara County, Romania
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.6 × 4.5 × 2.7 cm
Description

Nagyagite is one of those old European rarities that are both mineralogically and historically interesting. This is a very large, rich plate with freestanding (unetched from calcite) crystals to 3mm of this very rare species, from its type locality, richly scattered over a matrix of sphalerite It is important that this has not been etched out from calcite as with so many nagyagite specimens, as that preparation method changes the natural patina on the surface of the crystals. These are rather robust, stubby crystals, nicely interspersed on ore matrix.

Mineral Data
What's on the rock

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