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Gmelinite With Natrolite

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GND32253

Gmelinite With Natrolite

Ex Geoff Thomas Collection (Victoria, Australia)
Classic Locality

Description Tabs

Description
Locality: 
Flinders Ranges, South Australia, Australia
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.7 × 4 × 3.8 cm
Description

Clusters and individual crystals of pink gmelinite sdorn a large open vugh in basalt. These are accompanied by a carpet of white acicular natrolite on top of clear analcime crystals.

A great combination piece. The base is sawn flat enabling the specimen to display well. Undamaged and aesthetic. Comes with collectors label.

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

Natrolite

Formula: 
Na2Al2Si3O10·2H2O
Strunz: 
9.GA.05
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Hohentwiel, Singen, Hegau, Baden-Württemberg, Germany
Gondwana Minerals