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Calcite On Goethite With Baryte

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PFK21171

Calcite On Goethite With Baryte

Description Tabs

Description
Locality: 
Thasos Island, East Macedonia and Thrace, Greece
Size Range: 
Cabinet (10-18 cm)
Size: 
5.5 × 15 × 11 cm
Description

Calcite on goethite, forming a nice formation of balls. There are a few transparent baryte crystals as well.

Only minor damage.

Mineral Data
What's on the rock

Calcite

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

Baryte

Formula: 
BaSO4
Strunz: 
7.AD.35
Hardness: 
3.0 - 3.5
Streak: 
White
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