Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Gmelinite

Views:
Watches:
PCZ130851

Gmelinite

Type Locality

Description Tabs

Description
Locality: 
Little Deerpark Quarry, Glenarm, County Antrim, Northern Ireland, United Kingdom
Size Range: 
Cabinet (10-18 cm)
Size: 
10 × 8.5 × 5 cm
Largest Crystal: 
0.50cm
Description

Occasionally gmelinite from the type locality is found in this unusal but attractive habit. The gmelinite crystals are like sandwiches with opaque main faces and a particularly gemmy filling. The vug is 4.5 x 2.3cm and lined with small analcime crystals. This specimen has been trimmed by saw on the back to reduce the matrix but this is not obvious in display. If you are interested in unusual habits in zeolites please look at the two analcime specimens and the natrolite I have listed.

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
Peter Crozier Minerals