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Garronite-Ca

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PAV937658

Garronite-Ca

New Discovery

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Description
Locality: 
Fajã Grande, São Roque do Faial, Santana, Madeira Islands, Portugal
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.4 × 2.1 × 2.4 cm
Description

Sample with several garronite-Ca crystal. First and only locality in Portugal!

Collected: 
2020
Boxed with Label
Mineral Data
What's on the rock

Garronite-Ca

Formula: 
Na2Ca5Al12Si20O64·27H2O
Group Parent: 
Zeolite Group
Strunz: 
9.GC.05
Crystal System: 
Tetragonal
Hardness: 
4.0 - 5.0
Colour: 
White
Type Locality: 
Glenariff Valley, Garron Plateau, Co. Antrim, Northern Ireland, UK