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Goethite & Calcite

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CSL102097

Goethite & Calcite

Classic Locality

Description Tabs

Description
Locality: 
Siusi Alp, South Tirol, Trentino-Alto Adige, Italy
Size Range: 
Thumbnail (1-3cm)
Size: 
2.3 × 2.5 × 2.1 cm
Description

Nice calcite geode with few golden-brown goethite sprays.

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
Loranth Minerals

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