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Goethite Psm Gypsum

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PFK723412

Goethite Psm Gypsum

Classic Locality

Description Tabs

Description
Locality: 
Hilarion Mine, Hilarion, Kamariza, Agios Konstantinos, Lavrion District, Attiki Prefecture, Greece
Class: 
Massive/Crystalline
Size Range: 
Cabinet (10-18 cm)
Size: 
12.4 × 10.7 × 3 cm
Description

Here is an interesting specimen from the Hilarion, it must be very old. The piece is cast of goethite after crystals of selenite. What makes it stand out from similar pieces from the locality is the fine luster it has!

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

Gypsum

Formula: 
CaSO4·2H2O
Strunz: 
7.CD.40
Hardness: 
2.0
Streak: 
White.

Seller Information

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