Gehlenite

White grains of gehlenite in matrix
Origin: Bellerberg, Eifel, Germany
Sample size: 2 x 2 x 2 cm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

Dark grey-brown tetragonal crystals up to 5 mm in matrix
Origin: Monzoni, Trento Province, Trentino-alto Adige, Italy 
Sample size: 3 x 3.5 cm
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

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