Gonnardite

Origin: Boral quarry, Bundoora, Victoria, Australia
Owner: Milton Speckels
Microscopic image, 6.9 x
 

Photo courtesy of: 

Milton Speckels

Photo-Atlas of Minerals

 

White crystals in vug in matrix
Origin: Vardeåsen, Tvedalen, Norway
Sample size: micromount
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

  
  
Origin: Boral Quarry, Bundoora, Victoria, Australia
Sample size: 3.1 x 2.8 x 2.8 cm
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

Gonnardite on thomsonite
Origin: Middlesex Plains, Tasmania, Australia
Sample size: unknown
Sample owner: Steve Sorrell
 

Photo courtesy of: 

Steve Sorrell

Crocoite.com

 

  
White blocky terminated prismatic crystals of gonnardite, or "tetranatrolite", to 8 mm in length are thickly covering the top of a fibrous greenish-brown crystalline aegirine matrix with minor analcime in association.
Origin:  Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville Co., Québec, Canada
Ex. Scott and Ann Williams collection
Sample size: 6.6 x 3.6 x 4.3 cm
 

Photo courtesy of: 

Dan Weinrich

Dealer in fine mineral specimens

 

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