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Pisolite & Aragonite & Calcite

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MBM1098324

Pisolite & Aragonite & Calcite

Classic Locality

Description Tabs

Description
Locality: 
Karlovy Vary Thermal Springs, Karlovy Vary Region, Czech Republic
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 5 × 1.5 cm
Description

Interesting oldtomer of Pisolite (Erbsenstein in German), a sedimentary rock made of pisoids (= pisoliths), which are approximately spherical, concretionary grains, typically of calcium carbonate as Calcite and Aragonite up to 5mm in diameter from the Karlovy Vary Thermal Springs in Czech Republic.

Mineral Data
What's on the rock

Pisolite

Variety Of: 

Aragonite

Formula: 
CaCO3
Strunz: 
5.AB.15
Hardness: 
3.5 - 4.0

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

Calcite

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