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Analcime

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PCZ600877

Analcime

Description Tabs

Description
Locality: 
Little Deerpark Quarry, Glenarm, County Antrim, Northern Ireland, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 4 × 3 cm
Description

Radiating analcime is a very rare occurrence. This specimen has a 0.7cm filled vug of the material.5 When observed in good light these radial crystals from Little Deer Park refract to give the colours of the rainbow along their length. I am not aware of any other zeolite (or analcime from another locality) that exhibits this effect. 

Mineral Data
What's on the rock

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
Peter Crozier Minerals