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Calcite Var Calcareous Tufa

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CR548203

Calcite Var Calcareous Tufa

Description Tabs

Description
Locality: 
Ilsfeld, Heilbronn, Stuttgart Region, Baden-Württemberg, Germany
Class: 
Crystal Group/Cluster
Size Range: 
Cabinet (10-18 cm)
Size: 
12 × 9 × 4 cm
Description

This is a very unusual variety of calcite specimen - Calcareous Tufa.

Beautiful specimen from an old collection.

Mineral Data
What's on the rock

Calcite

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

Calcareous Tufa

Variety Of: 

Calcite

Formula: 
CaCO3
Strunz: 
5.AB.05
Hardness: 
3.0