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Analcime Thomsonite-Ca & Mesolite

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ZLT535960

Analcime Thomsonite-Ca & Mesolite

Description Tabs

Description
Locality: 
Hólmaháls, Reydarfjörđur, Eastern Region, Iceland
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
2 × 6 × 4 cm
Description

Basaltic matrix with brownish crystals of analcime and some thomsonite/mesolite aggregates. Collected 2012.

Mineral Data
What's on the rock

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

Thomsonite-Ca

Formula: 
NaCa2[Al5Si5O20]·6H2O
Strunz: 
9.GA.10
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Old Kilpatrick, Strathclyde (Dunbartonshire), Scotland, UK

Mesolite

Formula: 
Na2Ca2Si9Al6O30·8H2O
Strunz: 
9.GA.05
Hardness: 
5.0

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