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Smithsonite Goethite Psm Gypsum & Aragonite

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PFK825626

Smithsonite Goethite Psm Gypsum & Aragonite

Classic Locality

Description Tabs

Description
Locality: 
Jean Baptiste Mine, Kamariza, Agios Konstantinos, Lavrion District, Attiki Prefecture, Greece
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.4 × 3.7 × 1.6 cm
Description

What an unusual combination. Elongated crystals of gypsum have been replaced by goethite and then smithsonite was deposited on them, along with aragonite. Excellent and very rare combination as these pseudos usually are just goethite without the added minerals.

Mineral Data
What's on the rock

Smithsonite

Formula: 
ZnCO3
Strunz: 
5.AB.05
Hardness: 
4.0 - 4.5
Streak: 
White

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.

Aragonite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.15
Crystal System: 
Hexagonal
Hardness: 
3.5 - 4.0
Type Locality: 
Gallo river, Molina de Aragón, Guadalajara, Castile-La Mancha, Spain

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