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Gonnardite On Chabazite

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PJM122271

Gonnardite On Chabazite

Description Tabs

Description
Locality: 
Boral Quarry, Bundoora, Whittlesea, Victoria, Australia
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 4.6 × 2.8 cm
Description

A large open concave cavity in basalt and has been carpeted with small twinned phacolite variety chabazite crystal, completely colourless sharp and wll formed. Over the chabazite crystals are dozens of ivory white spheres of thisghtly apcked acicular crystals of gonnardite from the now defunct Bundoora Quarry in the northern suburbs of Melbourne

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

Chabazite

Synonym Of: 

Chabazite-Ca

Formula: 
(Ca,K2,Na2)2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0 - 5.0

Chabazite-K

Formula: 
(K2,Ca,Na2,Sr,Mg)2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0

Chabazite-Mg

Formula: 
(Mg0.7K0.5Ca0.5Na0.1)[Al3Si9O24]·10H2O
Strunz: 
9.GD.10
Hardness: 
4.0 - 0.0

Chabazite-Na

Formula: 
(Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0

Chabazite-Sr

Formula: 
Sr2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0 - 4.5
Earthstones Australia

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