Giessenite

  
Origin: Vena, Bergslagen, Sweden
Sample size: 2.5 x 1.5 cm x 3 mm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

Grey metallic with chalcopyrite and quartz
Origin: Vena, Närke, Sweden
Sample size: micromount
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

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