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Gyrolite & Thomsonite

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CSW160811

Gyrolite & Thomsonite

Description Tabs

Description
Locality: 
Ballynulto Quarry, Broughshane, County Antrim, Northern Ireland, United Kingdom
Size Range: 
Small cabinet (7-10 cm)
Size: 
5.3 × 7 × 6.8 cm
Description

Basalt matrix with one face approximately 5.3cm x 7cm covered with blue grey thomsonite crystals and creamy white bladed gyrolite crystal clusters. Gyrolite is one of the rare amygdale minerals found in the Antrim basalts.

Mineral Data
What's on the rock

Gyrolite

Formula: 
NaCa16Si23AlO60(OH)8·14H2O
Strunz: 
9.EE.30
Hardness: 
2.5
Streak: 
White
Type Locality: 
The Storr, Portree, Trotternish, Isle of Skye, North West Highlands (Inverness-shire), Scotland, UK

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

Seller Information

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Thank you for viewing my auctions. It goes without saying that maintaining high standards in both specimen quality and customer service are extremely important to me. If for any reason you are not happy with any aspect of your transaction then please let me know as soon as possible, ideally within 1 week of receiving your specimen. I will happily do all in my power to resolve the situation to your satisfaction. If your specimen is damaged upon delivery simply send me some photos to verify this and I'll provide you with a full refund or a replacement specimen, whichever you prefer.