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Pyrite On Albite

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QRI865496

Pyrite On Albite

Description Tabs

Description
Locality: 
St Gotthard Tunnel, NEAT Construction Site, Amsteg, Uri, Switzerland
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.6 × 4.2 × 3.9 cm
Largest Crystal: 
1.00cm
Weight: 
57.00gr
Description

A group of pyrite crystals perched on top of albite crystals, both on grey metamorphic matrix. Crystals are brass-colored and display a good metallic lustre.

Contrastful and in good conditions. Only minor traces of oxidation, although it appears rather stable.

Mineral Data
What's on the rock

Pyrite

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

Albite

Formula: 
NaAlSi3O8
Strunz: 
9.FA.35
Crystal System: 
Triclinic
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Finnbo (Finbo), Falun, Dalarna, Sweden

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