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Thomsonite Analcime & Apophyllite

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PCZ117148

Thomsonite Analcime & Apophyllite

Description Tabs

Description
Locality: 
Maxwell Quarries, Ballymena, County Antrim, Northern Ireland, United Kingdom
Size Range: 
Museum (18cm plus)
Size: 
24 × 18 × 11 cm
Description

This is one from my own collection, a seriously large and heavy specimen. Museum size and museum quality (for the location). Zeolite specimens from Northern Ireland on this scale do not usually come up for sale and then only for collectors with sturdy shelves. The display face is flat and coated with snow white thomsonite crystals on top of the thomsonite sit numerous translucent analcime crystals many of which exceed 1.0cm across. There are also a few apophyllite crystals scattered around. I have priced the P & P as:- UK $35 Europe $75 USA $160

Mineral Data
What's on the rock

Thomsonite

Synonym Of: 

Thomsonite-Ca

Formula: 
NaCa2[Al5Si5O20]·6H2O
Strunz: 
9.GA.10
Hardness: 
5.0 - 5.5

Thomsonite-Sr

Formula: 
Na(Sr,Ca)2[Al5Si5O20]·7H2O
Strunz: 
9.GA.10
Hardness: 
5.0 - 0.0

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

Apophyllite

Synonym Of: 

Fluorapophyllite-(K)

Formula: 
KCa4(Si8O20)(F,OH)·8H2O
Strunz: 
9.EA.15
Hardness: 
4.5 - 5.0

Fluorapophyllite-(Na)

Formula: 
NaCa4(Si8O20)F·8H2O
Strunz: 
9.EA.15
Hardness: 
4.0 - 5.0

Hydroxyapophyllite-(K)

Formula: 
KCa4(Si8O20)(OH,F)·8H2O
Strunz: 
9.EA.15
Hardness: 
4.0 - 5.0
Peter Crozier Minerals