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Calcite On Natrolite

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CR525578

Calcite On Natrolite

Classic Locality

Description Tabs

Description
Locality: 
Mariánská Skála, Ústí nad Labem District, Ústí nad Labem Region, Czech Republic
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 4.5 × 3.8 cm
Description

A very attractive specimen of a golden yellow calcite crystal on a bed of white natrolite crystals.

Ex Armin Wendland collection.

Sawn base.

Mineral Data
What's on the rock

Calcite

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

Natrolite

Formula: 
Na2Al2Si3O10·2H2O
Strunz: 
9.GA.05
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Hohentwiel, Singen, Hegau, Baden-Württemberg, Germany