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Natrolite & Brandtite

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SHS1170916

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Description
Locality: 
Sailauf, Lower Franconia, Bavaria, Germany
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 4.5 × 1.5 cm
Description

Nice natrolite and small brandtite crystals on matrix

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

Brandtite

Formula: 
Ca2(Mn2+,Mg)(AsO4)2·2H2O
Strunz: 
8.CG.10
Crystal System: 
Monoclinic
Hardness: 
3.5
Type Locality: 
Harstigen Mine, Pajsberg, Persberg district, Filipstad, Värmland, Sweden

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$5
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Start 09 Mar 18:00
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