Blatterite

  
 1 mm long lath-shaped black blatterite crystal
Origin: Nordmark, Värmland, Sweden
Sample size: 1 cm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

 
Black blatterite with manganosite in matrix
Origin: Kittelgruvan, Nordmark, Värmland, Sweden
Sample size: 2 x 3 cm (top), 2 x 2.5 cm (bottom)
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

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