Shortite

Origin: Green River Formation, Sweetwater Co., Wyoming, USA
Picture size: 6 mm
Owner: Thomas Witzke
 

Photo courtesy of: 

Thomas Witzke

Institut für Mineralogie und Lagerstättenlehre
Aachen, Germany

 

  
Crystals in shale matrix, section of a drill core
Origin: Green River, Sweetwater Co., Wyoming, USA
Sample size: 6 x 6 x 1 cm, crystals to 4 mm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

  
  
Shortite in gonnardite pseudomorph after ?? (Haineault proposes calcite as an educated guess). The shortite has unusual form, in that the crystals are extended and pointy rather than barrel-shaped.
  
Origin: Mont St. Hilaire, Quebec, Canada
Sample size: 3.5 x 2.1 x 2.0 cm (top/2nd row), 3.0 x 2.9 x 1.6 cm (3rd/bottom row)
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

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