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Gonnardite

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PJM94512

Gonnardite

Description Tabs

Description
Locality: 
Boral Quarry, Bundoora, Whittlesea, Victoria, Australia
Size Range: 
Cabinet (10-18 cm)
Size: 
11.4 × 9.5 × 2.2 cm
Description

A series of shallow cavities are bejewelled by hemispheres of white gonnardite from the now defunct basalt quarry at Bundooora in the northern suburbs of metropolitian Melbourne. A few of the crystal spheres have been fractured at the cavity edges to exposed their radial growth patterns

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
Earthstones Australia

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