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Gonnardite

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WND859108

Gonnardite

Rare Mineral
Classic Locality

Description Tabs

Description
Locality: 
Hochberg Quarry, Nieder-Ofleiden, Homberg, Vogelsberg, Giessen Region, Hesse, Germany
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 4.1 × 2.6 cm
Description

Several, spheroidal aggregates of rare zeolite Gonnardite lining two vugs in basaltic matrix. The white Gonnardite is well defined and typically silky lustrous. A rich and pretty large specimen of a relativelly rare species from the classic Hessian locality.

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
Wendel Minerals

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