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Goethite & Calcite

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AST724822

Goethite & Calcite

Pseudomorph

Description Tabs

Description
Locality: 
Kamariza Mines, Agios Konstantinos, Lavrion District, Attiki Prefecture, Greece
Class: 
Massive/Crystalline
Size Range: 
Cabinet (10-18 cm)
Size: 
7.5 × 10 × 7 cm
Description

Intergrown pseudomorphs of lustrus goethite after dissolved gypsum crystals with minor calcite crystals at the back.Very representative specimen of this well known pseudomorph from Lavrion

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

Calcite

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

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