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Gmelinite

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GSM35566

Gmelinite

Type Locality

Description Tabs

Description
Locality: 
Little Deerpark Quarry, Glenarm, County Antrim, Northern Ireland, United Kingdom
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 2.9 × 4.1 cm
Largest Crystal: 
0.20cm
Description

This miniature specimen consists of a vesicular basalt matrix generously coated with the rare zeolite gmelinite. Individual crystals reach 2mm in length

Some of the salmon pink gmelinite is covered with water-clear analcime (to 3mm)

It was collected from the Northern Ireland type locality on 2006

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
Greenside Minerals Limited