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Gonnardite

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NSS221605

Gonnardite

Description Tabs

Description
Locality: 
Aci Castello, Etna, Catania Province, Sicily, Italy
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 3.5 × 2 cm
Largest Crystal: 
1.00cm
Description

two balls of gonnardite on matrix covered by small cristals of calcite,good for this uncommon zeolite

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

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