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Garronite-Ca Phillipsite-Ca & Natrolite

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PAV967117

Garronite-Ca Phillipsite-Ca & Natrolite

New Discovery

Description Tabs

Description
Locality: 
Fajã Grande, São Roque do Faial, Santana, Madeira Islands, Portugal
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 2.7 × 2 cm
Description

Fantastic specimen!

Phillipsite-Ca epimorphose on white garronite-Ca!

Natrolite is also present as acicular crystals.

Collected: 
2022
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

Phillipsite-Ca

Formula: 
(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32 . 12H2O
Strunz: 
9.GC.10
Crystal System: 
Monoclinic
Hardness: 
4.0 - 5.0
Streak: 
White
Type Locality: 
Lower Salt Lake Tuff, Puuloa Road, Oahu Island, Honolulu Co., Hawaii, USA

Natrolite

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