Nukundamite

A metallic brownish rim of nukundamite with dark purplish-blue covellite on pyrite
Origin: Ronneburg U deposit, Gera district, Thuringia, Germany
Picture size: 7 mm
Owner: Thomas Witzke
 

Photo courtesy of: 

Thomas Witzke

Institut für Mineralogie und Lagerstättenlehre
Aachen, Germany

 

  
Grey sub-metallic grains to 3 mm in matrix
Origin: Vallenar, Region III, Chile
Sample size: 2 x 1.5 x 1cm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

 
 
Redbrown metallic crystal on matrix
Origin: Mantos del Pacifico, Iquique, Chile
Sample size: micromounts
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

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