Thenardite

White thenardite on augite-nephelinite rock. Formed by the weathering of pyrite and nepheline
Origin: Bärenstein Quarry, Niederschlag, Oberwiesenthal, Erzgebirge, Saxony, Germany
Picture size: 5 mm
Owner: Thomas Witzke
 

Photo courtesy of: 

Thomas Witzke

Institut für Mineralogie und Lagerstättenlehre
Aachen, Germany

 

  
  
Origin: Soda Lake, San Luis Obispo County, California, U.S.A.
Sample size: 6.7 x 5 x 3.7 cm
 

Photo courtesy of: 

John Veevaert, Trinity Mineral Co

Trinityminerals.com

 

  
Origin: Soda Lake, San Luis Obispo County, California, U.S.A.
Sample size: 3 x 2.6 x 1.5 cm
 
  
 
  
 
  
Thenardite pseudomorph after mirabilite
Origin: Boron, Kern Co., California, U.S.A.
Sample size: 4.4 x 3.7 x 2.5 cm (top), 6.7 x 6.0 x 2.4 cm (2nd row), 3.8 x 2.5 x 2.3 cm (3rd/bottom row)
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

  
Origin: Schellkopf, Brenk, Eifel, Germany
Sample size: 2 x 3 cm
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

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