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Chiavennite Analcime & Natrolite

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ESM546949

Chiavennite Analcime & Natrolite

Description Tabs

Description
Locality: 
Tvedalen, Larvik, Vestfold og Telemark, Norway
Class: 
Combination
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2.8 × 3.6 × 2.1 cm
Description

A layer of brown chiavennite crystals with analcim and natrolite

Mineral Data
What's on the rock

Chiavennite

Formula: 
CaMnBe2Si5O13(OH)2·2H2O
Strunz: 
9.GF.25
Hardness: 
3.0
Type Locality: 
Tanno, Chiavenna, Valchiavenna, Sondrio Province, Lombardy, Italy

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

Natrolite

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