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Goethite Psm Gypsum & Adamite

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PFK646915

Goethite Psm Gypsum & Adamite

Classic Locality

Description Tabs

Description
Locality: 
Kamariza Mines, Agios Konstantinos, Lavrion District, Attiki Prefecture, Greece
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.1 × 3.1 × 1.3 cm
Description

What we have here is goethite that has replaced prismatic faces of selenite. The crystal form and termination can be seen at the main crystals but this is actually a 2d specimen as the rest of the faces are missing. They have probably been dissolved and not replaced with goethite. Apart from being a nice, unusual pseudo, it is associated with the rare for Lavrion white colored adamite in tiny little crystals on both sides of the specimen. I am selling it on consignment with a Greek collector.

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.

Adamite

Formula: 
Zn2(AsO4)(OH)
Strunz: 
8.BB.30
Crystal System: 
Orthorhombic
Hardness: 
3.5
Streak: 
white
Type Locality: 
Chañarcillo, Copiapó Province, Atacama Region, Chile

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

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