Johnbaumite

Origin: Jakobsberg, Sweden
Sample size: thumbnail
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

  
Colourless to white crystalline in Franklin type ore. Violet-purple fluorescence in SW UV
Origin: Jacobsberg, Värmland, Sweden
Sample size: 3.5 x 6 cm
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

  
  
Johnbaumite with calcite and willemite. Dull, brown-orange fluorescence for the johnbaumite.
Origin: Franklin, Sussex County, New Jersey, U.S.A. (type locality)
Ex. Bob Fitton collection
Sample size: 6.4 x 5.0 x 1.7 cm
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

  
Origin: Jakobsberg mine, Nordmark, Filipstad, Värmland, Sweden
Sample size: 3.4 x 3.5 x 1.4 cm
 

Photo courtesy of: 

Dan Weinrich

Dealer in fine mineral specimens

 

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