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Thomsonite-Ca Chabazite-Ca & Mesolite

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PAV967120

Thomsonite-Ca Chabazite-Ca & Mesolite

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Description Tabs

Description
Locality: 
Serra de Água, Madeira, Madeira Islands, Portugal
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 2.9 × 2.5 cm
Description

Very good sample!!!

Several isolated aggregates of very thin tabular crystals of thomsonite-Ca on a 'bed' of twinned chabazite-Ca and mesolite fibers.

Collected: 
2023
Boxed with Label
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

Chabazite-Ca

Formula: 
(Ca,K2,Na2)2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0 - 5.0
Streak: 
White
Type Locality: 
Colle del Lares, San Nicolò Valley, Buffaure Group, Fassa Valley, Trento Province, Trentino-Alto Adige, Italy

Mesolite

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