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Goethite Psm Pyrite

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QRI1008052

Goethite Psm Pyrite

Classic Locality

Description Tabs

Description
Locality: 
Ahrntal, Bolzano Province, South Tyrol, Trentino-Alto Adige, Italy
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.5 × 4.8 × 3.5 cm
Largest Crystal: 
0.50cm
Weight: 
95.00gr
Description

Elegant specimen featuring a pseudomorph of goethite over pyrite on classic metamorphic matrix from this Alpine locale. 
The replacement is so detailed that the pyrite faces are still lustrous and even display the original triglyph faces.
From a pre-1940s lot I did acquire some time ago. Definitely old, scarce, connoisseur material.

Mineral Data
What's on the rock

Goethite

Formula: 
α-Fe3+O(OH)
Strunz: 
4.00.
Crystal System: 
Orthorhombic
Hardness: 
5.0 - 5.5
Type Locality: 
Hollertszug Mine (Hollerter Zug Mine), Dermbach, Herdorf, Siegerland, Rhineland-Palatinate, Germany

Pyrite

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

Seller Information

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