Manganite

  
Manganite with calcite (mined 1800s)
Origin: Ilfeld, Harz Mts., Thuringia, Germany
Sample size: 4.3 x 4.2 x 3.2 cm
 
  
  
 
  
  
Origin: Atikokan, Hutchinson Township, Ontario, Canada
Ex. Marty Lewadny collection
Sample size: 12.5 x 6.5 x 3.2 cm (top/2nd row), 4 x 2.7 x 2 cm (3rd/bottom row)
 
  
  
Origin: Caland pit, Atikokan, Hutchinson Township, Rainy River District, Ontario, Canada
Ex. Marty Lewadny collection
Sample size: 6.4 x 4.6 x 2 cm
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

  
Origin: Steep Rock Iron mine, Ontario, Canada
Ex. Polak collection
Sample size: 4 x 3 x 3 cm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

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