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Gobbinsite & Phillipsite-Na

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ZLT804372

Gobbinsite & Phillipsite-Na

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Description
Locality: 
Punta del Aguila, Playa Blanca, Yaiza, Lanzarote, Canary Islands, Spain
Class: 
Combination
Size Range: 
Small miniature (3-4.5 cm)
Size: 
1.8 × 3 × 2.2 cm
Description

Hemisphere of a gobbinsite/phillipsite-Na epitaxy with small phillipsite-Na crystals on the surface in a vug of basaltic rock. Rare example of a Na-rich zeolite paragenesis. Part of an analysed sample.

( Lapis 2019-1,44-49)

Mineral Data
What's on the rock

Gobbinsite

Formula: 
Na4(Ca,Mg,K2)Al6Si10O32·12H2O
Strunz: 
9.GC.05
Hardness: 
4.0
Type Locality: 
Hills Port, Gobbins, Island Magee, Co. Antrim, Northern Ireland, UK

Phillipsite-Na

Formula: 
(Na,K,Ca0.5,Ba0.5)4-7[Al4-7Si12-9O32]·12H2O
Strunz: 
9.GC.10
Crystal System: 
Monoclinic
Hardness: 
4.0 - 5.0
Colour: 
White
Streak: 
White
Type Locality: 
Rupe di Aci Castello, Aci Castello, Etna Volcanic Complex, Catania Province, Sicily, Italy

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