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Goethite Psm Gypsum & Calcite

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RHT582754

Goethite Psm Gypsum & Calcite

Pseudomorph

Description Tabs

Description
Locality: 
Hilarion Mines, Lavrion, Hilarion Mine, Hilarion, Kamariza, Agios Konstantinos, Lavrion District, Attiki Prefecture, Greece
Class: 
Combination
Size Range: 
Cabinet (10-18 cm)
Size: 
10.2 × 7.5 × 5 cm
Description

Goethite replacing gypsum crystals (hollow!) with a new generation of snow-white calcize crystals on top. Very nice contrast.

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.

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White