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Thomsonite-Ca & Analcime

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MEX200379

Thomsonite-Ca & Analcime

ex private collection, discovery 1991
Classic Locality

Description Tabs

Description
Locality: 
Hvalfjordur, Iceland
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.1 × 2.1 × 1.8 cm
Description

Large, white balls of thomsonite with colorless analcime crystals. We obtained this material directly from the finder.

Mineral Data
What's on the rock

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

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