Plagionite

  
Origin: Wolfsberg, Harz Mtns., Germany (type locality)
ex. Harvard Mineralogical Museum
Sample size: 4.5 x 2.5 x 2 cm
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

  
Lead grey crystals to 2 mm
Origin: Wolfsberg, Harz, Germany (type locality)
Ex. Stutz Collection
Sample size:
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

Grey needles in quartz
Origin: Grube Neue Hoffnung Gottes, Bräunsdorf, Freiberg, Saxony, Germany
Sample size: 2 x 3 cm
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

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