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Stilbite

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PCZ142492

Stilbite

Description Tabs

Description
Locality: 
Boghill Quarry, Glengormley, County Antrim, Northern Ireland, United Kingdom
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 4 × 3.5 cm
Description

This is by far the biggest stilbite specimen I have found in almost 20 years of collecting here in N. Ireland. It has resided in my own cupboard for most of that time but it is now time to find it a new home. The specimen comes from a locality now closed to collecting ad consists of the matrix free contents of a sizable vug. The stilbite sheaves are well represented and well terminated. A top quality example of the species from this part of the world.

Mineral Data
What's on the rock

Stilbite

Synonym Of: 

Stilbite-Ca

Formula: 
NaCa4[Al9Si27O72]·nH2O
Strunz: 
9.GE.10
Hardness: 
3.5 - 4.0

Stilbite-Na

Formula: 
(Na,Ca,K)6-7[Al8Si28O72]·nH2O
Strunz: 
9.GE.10
Hardness: 
3.5 - 4.0
Hardness: 
3.5 - 4
Colour: 
White
Streak: 
White
Peter Crozier Minerals