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Natrolite & Analcime

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SER888273

Natrolite & Analcime

ex Americo Urbinati collection

Description Tabs

Description
Locality: 
Zeilberg Quarry, Maroldsweisach, Bavaria, Germany
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.1 × 6.1 × 3.1 cm
Description

several tufts of white prismatic crystals of natrolite with analcime crystals too

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

Analcime

Formula: 
Na2(Al2Si4O12)·2H2O
Strunz: 
9.GB.05
Crystal System: 
Triclinic
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Cyclopean Islands, Acitrezza (Aci Trezza), Etna Volcanic Complex, Catania Province, Sicily, Italy