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Gmelinite

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Gmelinite

Classic Locality

Description Tabs

Description
Locality: 
Little Deerpark Quarry, Glenarm, County Antrim, Northern Ireland, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 5.5 × 4 cm
Weight: 
233.00gr
Description

Basalt matrix with an amygdale containing lovely examples of clusters of twinned orange gmelinite crystals. These clusters have crystallized on an earlier generation of smaller colourless to creamy coloured gmelinite crystals and colourless analcime crystals. This particular form of twinning is uncommon at the locality, which was previously the gmelinite Type Locality until the reorganisation of the species along chemistry.

Mineral Data
What's on the rock

Gmelinite

Synonym Of: 

Gmelinite-Ca

Formula: 
(Ca,Na2)[Al2Si4O12]·6H2O
Strunz: 
9.GD.05
Hardness: 
4.5

Gmelinite-K

Formula: 
(K2,Na2,Ca)[Al2Si4O12]·6H2O
Strunz: 
9.GD.05
Hardness: 
4.5

Gmelinite-Na

Formula: 
(Na2,Ca)[Al2Si4O12]·6H2O
Strunz: 
9.GD.05
Hardness: 
4.5
Group Parent: 
Zeolite Group

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.