(Low-) Tridymite

Origin: Euganei Hills, Veneto, Italy
Owner: Lou Perloff
Microscopic image
 
 
Origin: Bellerberg quarry, Laacher See, Rhineland-Palatinate, Germany
Owner: Lou Perloff
Microscopic image
 

Photo courtesy of: 

Lou Perloff

Photo-Atlas of Minerals

 

  
Twinned (trilling) of tridymite with hematite and topaz
Origin: Thomas Range, Juab Co., Utah, USA
Sample size: 3 x 2 x 1.5 cm with less than 1 mm crystals
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

Origin: roadcut State highway 78, Big Laue Mt., Greenlee Co., Arizona, USA
Sample size: Crystal to 2-3 mm in cavity in light-coloured volcanic rock
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

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