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Lévyne Gonnardite & Thomsonite

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Lévyne Gonnardite & Thomsonite

Classic Locality

Description Tabs

Description
Locality: 
Glenariff Valley, Garron Plateau, County Antrim, Northern Ireland, United Kingdom
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 3.5 × 2.5 cm
Description

Basalt matrix with amygdales showing an interesting suite of zeolite minerals including, white platy levyne crystals, colourless to light grey bladed thomsonite crystal clusters, colourless chabazite crystals, bright white massive gonnardite and thin, hair-like mesolite crystals. From a classic zeolite locality.

Mineral Data
What's on the rock

Gonnardite

Formula: 
(Na,Ca)2(Si,Al)5O10·3H2O
Strunz: 
9.GA.05
Hardness: 
4.0 - 5.0
Type Locality: 
La Chaux de Bergonne, Gignat, Saint-Germain-Lembron, Puy-de-Dôme, Auvergne, France

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

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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.