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Goethite Psm Pyrite

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QRI839738

Goethite Psm Pyrite

Former collection Kasper (CH)
Pseudomorph

Description Tabs

Description
Locality: 
Novena Pass, Bedretto Valley, Leventina, Ticino, Switzerland
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
16 × 3.5 × 3.5 cm
Largest Crystal: 
0.50cm
Weight: 
228.00gr
Description

A large long cabinet hosting three groups of pyrite cubes partly pseudomorphed by goethite in metamorphic matrix. Contacted, as most specimens from the area: the crystals very rarely come out intact from there.
Definitely a connoisseur specimen, especially for Alpine geology. From the Kasper collection (CH), this specimen is dated back to the 70s and comes with the original label in German.

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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