Mirabilite

Colourless grains and indistinct crystals of mirabilite. The mineral dehydrates quickly in dry air and must be preserved in a closed box.
Origin: Willi Agatz Mine, Dresden, Saxony, Germany
Picture size: 4 mm
Owner: Thomas Witzke
 

Photo courtesy of: 

Thomas Witzke

Institut für Mineralogie und Lagerstättenlehre
Aachen, Germany

 

  
Mirabilite pseudomorph after thenardite
Origin: Boron, Kern Co., California, U.S.A.
Sample size: 3.8 x 3.8 x 2.0 cm
 
  
Mirabilite pseudomorph after thenardite
Origin: California, U.S.A.
Sample size: 6.4 x 5.0 x 4.0 cm
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

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