Boracite

  
Boracite in hilgardite
Origin: Boulby Potash Mine, Loftus, Cleveland, England
Sample size: 4.4 x 2.7 x 2.0 cm
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

  
Green tetrahedral crystals of boracite to 4 mm in size are thickly covering a  matrix with minor salmon coloured hilgardite in association.
Origin: 215 Panel, Boulby Mine, Loftus, Cleveland, England, UK
Sample size: 4.6 x 2.3 x 1.5 cm
 
  
  
Origin: Boulby Mine, Loftus, Cleveland, England, UK
Ex. Scott Williams collection
Sample size: 6.5 x 2.8 x 2.9 cm
 

Photo courtesy of: 

Dan Weinrich

Dealer in fine mineral specimens

 

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