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Natrolite & Calcite

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MEX570167

Natrolite & Calcite

Classic Locality

Description Tabs

Description
Locality: 
Oberwiddersheim, Nidda, Wetteraukreis, Darmstadt, Hesse, Germany
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.2 × 5.1 × 4.2 cm
Weight: 
102.00gr
Description

Well terminated natrolite groups apparent resemblance like stalactites. Here and there are grown calcite crystals.

Mineral Data
What's on the rock

Natrolite

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

Calcite

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