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Sylvanite Pyrite & Calcite

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MGR843517

Sylvanite Pyrite & Calcite

Rare Mineral

Description Tabs

Description
Locality: 
Baia de Arieş, Alba County, Romania
Class: 
Combination
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.1 × 3.7 × 2.6 cm
Description

Amazing combination of a nice formen pyrite crystal where the edges and parts of the faces are fully covered in exreme rare, silvery shiny micro crystals of sylvanite. On top you have additionally an uncountable amount of good crystallized calcite crystals as well.

Mineral Data
What's on the rock

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

Pyrite

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

Calcite

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